BOK FINANCIAL CORP ET AL
10-Q, 1999-05-17
NATIONAL COMMERCIAL BANKS
Previous: TCSI CORP, 10-Q, 1999-05-17
Next: PEOPLESOFT INC, 10-Q, 1999-05-17



     As filed with the Securities and Exchange Commission on May 17, 1999
- --------------------------------------------------------------------------------


                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                                    FORM 10-Q

             QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


                      For the Quarter Ended March 31, 1999
                           Commission File No. 0-19341



                            BOK FINANCIAL CORPORATION


                      Incorporated in the State of Oklahoma
                  I.R.S. Employer Identification No. 73-1373454

                             Bank of Oklahoma Tower
                                  P.O. Box 2300
                              Tulsa, Oklahoma 74192

                         Registrant's Telephone Number,
                       Including Area Code (918) 588-6000
                 SECURITIES REGISTERED PURSUANT TO SECTION 12(b)
                               OF THE ACT: (NONE)
                 SECURITIES REGISTERED PURSUANT TO SECTION 12(g)
                                   OF THE ACT:
                        COMMON STOCK ($.00006 Par Value)



Indicate by check mark whether the Registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding  twelve months (or for such shorter period that the Registrant was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days.

Yes X   No

Indicate the number of shares outstanding of each of the Registrant's classes of
common stock, as of the latest  practicable  date:  45,148,328  shares of common
stock ($.00006 par value) as of April 30, 1999.


<PAGE>


                            BOK Financial Corporation
                                    Form 10-Q
                          Quarter Ended March 31, 1999


Index

Part I.  Financial Information
Management's Discussion and Analysis                                      2

Report of Management on Consolidated
     Financial Statements                                                15

Consolidated Statements of Earnings                                      16

Consolidated Balance Sheets                                              17

Consolidated Statements of Changes
     in Shareholders' Equity                                             18

Consolidated Statements of Cash Flows                                    19

Notes to Consolidated Financial Statements                               20

Financial Summaries - Unaudited                                          24

Part II.  Other Information

      Item 6. Exhibits and Reports on Form 8-K                           26

Signature                                                                26


MANAGEMENT'S ASSESSMENT OF OPERATIONS AND FINANCIAL CONDITION

Assessment of Operations

Summary of Performance

BOK Financial Corporation ("BOK Financial") recorded net income of $19.8 million
or $0.38 per  diluted  common  share for the first  quarter of 1999  compared to
$16.3  million or $0.31 per diluted  common share for the first quarter of 1998.
Returns on average  assets  were 1.19% for both the first  quarters  of 1999 and
1998. Returns on average equity were 15.75% and 14.89%, for the first quarter of
1999 and 1998, respectively

The increase in net income for the first  quarter of 1999 was  primarily  due to
increases  of $8.0  million  or 22% in fees  and  commissions  revenue  and $7.9
million or 19% in net interest revenue. These increases were partially offset by
increases of $6.4 million or 11% in operating expenses.

Tangible Operating Results

Since  inception,  BOK Financial has completed  several  acquisitions  that were
accounted  for under the purchase  method of  accounting.  The  purchase  method
results in the recording of goodwill and other  identifiable  intangible  assets
that are amortized as non-cash  charges in future years into operating  expense.
Operating  results  excluding the impact of the amortization of these intangible
assets are summarized below:

<TABLE>

- ------------------------------------------------------------- -------------------------------
TABLE  1 - TANGIBLE OPERATING RESULTS
                                                              -------------------------------
              (Dollars in Thousands Except Share Data)              Three months ended
                                                              -------------------------------
                                                                March 31,       March 31,
                                                                   1999            1998
                                                              --------------- ---------------
<S>                                                           <C>             <C>         
  Net income                                                  $     19,817    $     16,313
  After-tax impact of amortization of intangible assets             2,889           2,072
- ------------------------------------------------------------- --------------- ---------------
  Tangible net income                                         $     22,706    $     18,385
- ------------------------------------------------------------- --------------- ---------------
  Tangible net income per diluted share                       $         0.44  $        0.35
- ------------------------------------------------------------- --------------- ---------------
  Tangible return on average shareholders' equity                   18.05%          16.78%
- ------------------------------------------------------------- --------------- ---------------
  Tangible return on average assets                                  1.36%           1.34%
- ------------------------------------------------------------- --------------- ---------------
</TABLE>

Net Interest Revenue

Net interest revenue on a  tax-equivalent  basis was $52.2 million for the first
quarter of 1999  compared  to $44.4  million for the first  quarter of 1998,  an
increase of 18%.  Average  earning assets  increased by $1.0 billion,  including
increases  in average  loans of $701  million  and  average  securities  of $306
million.  Interest bearing liabilities increased $950 million,  primarily due to
increases in borrowed funds of $663 million. Interest bearing deposits increased
$286 million.  The growth in average  earning  assets in excess of the growth in
interest  bearing  liabilities  contributed  $8.4 million to the increase in net
interest revenue.


<PAGE>

- ------------------------------------------------------------------------------
TABLE 2 - VOLUME/RATE ANALYSIS
(In thousands)

                                                    Three months ended
                                                    March 31, 1999/1998
                                           -----------------------------------
                                                           Change Due To (1)
                                                       -----------------------
                                                                      Yield
                                              Change      Volume      /Rate
                                           -----------------------------------
Tax-equivalent interest revenue:
  Securities                               $    3,833   $  4,596   $   (763)
  Trading securities                              533        572        (39)
  Loans                                         9,914     14,578     (4,664)
  Funds sold                                     (513)      (443)       (70)
- ------------------------------------------------------------------------------
Total                                          13,767     19,303     (5,536)
- ------------------------------------------------------------------------------
Interest expense:
  Interest bearing transaction deposits         1,214      1,925       (711)
  Savings deposits                                 86        197       (111)
  Time deposits                                (2,183)      (116)    (2,067)
  Other borrowings                              6,804      8,922     (2,118)
  Subordinated debenture                          (19)         2        (21)
- ------------------------------------------------------------------------------
Total                                           5,902     10,930     (5,028)
- ------------------------------------------------------------------------------
  Tax-equivalent net interest revenue
    before nonrecurring foregone interest       7,865      8,373       (508)
  Non-recurring foregone interest                   -
 Change in tax-equivalent adjustment               (3)
- ------------------------------------------------------------------------------
Net interest revenue                       $    7,862
- ------------------------------------------------------------------------------
(1)  Changes  attributable to both volume and yield are allocated to both volume
     and yield/rate on an equal basis.


Net  interest  margin,  the ratio of net  interest  revenue to  average  earning
assets,  was 3.57% for the first quarter of 1999 compared to 3.65% for the first
quarter of 1998 and 3.72% for the fourth quarter of 1998. The primary reason for
the  decrease  in the  net  interest  margin  was  the  securitization  sale  of
approximately  $100 million of  automobile  loans in the first  quarter of 1999.
These loans had an average  yield to BOK  Financial  of 9.23%,  which is greater
than the overall yield on average  earning  assets.  Additionally,  the sale was
structured so that BOK  Financial  was required to carry a non-earning  asset on
its balance sheet for 36 days during the quarter.  This caused  approximately 14
basis points of the decrease in the net interest margin.  The effect of the sale
of these  loans was  partially  offset  by a  decrease  in the cost of  interest
bearing liabilities, primarily certificates of deposit and borrowed funds.

Since  inception,  BOK Financial has followed a strategy of fully  utilizing its
capital  resources  by  borrowing  funds in the  capital  markets to  supplement
deposit  growth in order to fund increased  investments in securities.  Although
this strategy frequently results in a net interest margin that falls below those
normally  seen in the  commercial  banking  industry,  it provides  positive net
interest revenue.  Management estimates that for the first quarter of 1999, this
strategy resulted in a 46 basis point decrease in net interest margin.  However,
this strategy  contributed $2.9 million to net interest  revenue.  As more fully
discussed in the Market Risk section,  management  employs various techniques to
control,  within  established  parameters,  the interest rate and liquidity risk
inherent in this strategy.


Other Operating Revenue

Other  operating  revenue  increased  $6.1  million or 15%  compared to the same
quarter  of 1998.  Total  fees and  commissions,  which  are  included  in other
operating revenue,  increased $8.0 million or 22%. All categories of fee income,
except  mortgage  banking  revenue,  showed  increases over the first quarter of
1998. Most notably, other revenue increased $2.3 million due primarily to a $1.6
million  increase  in  underwriting  and  advisory  fees for  BOSC,  Inc.  Other
increases  reflected  continued  growth  in  BOK  Financial's  overall  business
activity.  The decrease in mortgage  banking  revenue was due to lower servicing
revenue. Servicing revenue was $7.9 million and $8.5 million,  respectively, for
the first  quarters of 1999 and 1998.  Lower  interest rates during most of 1998
and the first quarter of 1999 increased the number of borrowers that  refinanced
their mortgage  loans.  This  refinancing  activity  reduced the amount of loans
serviced by BOK Financial and the servicing  revenue.  Gain on the sale of other
assets included $752 thousand from the sale of an interest in a local bank.
<TABLE>

- -------------------------------------------------------------------------------------------------------
TABLE 3 - OTHER OPERATING REVENUE
(In thousands)

                                                             Three Months Ended
                                   -------------------------------------------------------------------
                                       March 31,    Dec. 31,    Sept. 30,      June 30,    March 31,
                                         1999        1998         1998          1998         1998
                                   -------------------------------------------------------------------

<S>                                 <C>         <C>          <C>           <C>          <C>       
Brokerage and trading revenue       $    4,347  $    4,010   $    4,109    $    4,051   $    3,131
Transaction card revenue                 7,555       6,360        6,516         6,010        5,540
Trust fees and commissions               7,762       7,650        7,751         7,654        6,884
Service charges and fees
  on deposit accounts                    9,159       9,094        8,015         7,440        7,638
Mortgage banking revenue                 9,195      10,543       10,929        10,940        9,321
Leasing revenue                          1,868       1,897        1,749         1,804        1,661
Other revenue                            5,014       2,296        3,239         3,017        2,685
- ------------------------------------------------------------------------------------------------------
  Total fees and commissions            44,900      41,850       42,308        40,916       36,860
- ------------------------------------------------------------------------------------------------------
Gain on student loan sales                 529           -           14           119        1,415
Gain on loan securitization                270           -            -             -            -
Gain on sale of other assets               892           -            -             -            -
Gain on securities                         274       2,967          538         3,320        2,512
- ------------------------------------------------------------------------------------------------------
  Total other operating revenue     $   46,865  $   44,817   $   42,860    $   44,355   $   40,787
- ------------------------------------------------------------------------------------------------------
</TABLE>


<PAGE>

Other Operating Expenses

Operating  expenses for the first quarter of 1999  increased $6.4 million or 11%
compared  to the first  quarter  of 1998.  The first  quarter  of 1999  includes
operating  expenses of $6.1 million for the Bank of  Albuquerque,  which did not
exist in the first quarter of 1998.  The first quarter of 1998 included  charges
of  $2.3  million  for the  cost  of  stock  contributed  to the BOk  Charitable
Foundation  and $3.0  million for a provision  for the  possible  impairment  of
mortgage servicing rights.  The discussion  following Table 4 of other operating
expenses excludes these charges for both 1999 and 1998 to improve comparability.
<TABLE>

- ---------------------------------------------------------------------------------------------------------------------
TABLE 4 - OTHER OPERATING EXPENSE
(In thousands)

                                                                       Three Months Ended
                                  -----------------------------------------------------------------------------------
                                      March 31,       Dec. 31,        Sept. 30,        June 30,         March 31,
                                        1999            1998            1998             1998              1998
                                  -----------------------------------------------------------------------------------

<S>                               <C>             <C>            <C>               <C>              <C>         
Personnel                         $     31,106    $    29,384    $     26,067      $    25,715      $     24,829
Business promotion                       2,459          2,619           1,862            1,662             1,897
Contribution of stock to BOK
   Charitable Foundation                     -              -               -                -             2,257
Professional fees/services               1,839          3,131           2,622            2,308             1,596
Net occupancy, equipment
  and data processing                   12,996         12,437          10,574           10,594             9,214
FDIC and other insurance                   315            335             270              345               310
Printing, postage and supplies           2,751          2,659           2,267            2,223             2,047
Net gains and operating
  expenses on repossessed assets        (1,296)           (91)            (19)            (315)              (55)
Amortization of intangible
  assets                                 3,245          2,529           2,268            2,272             2,302
Mortgage banking costs                   5,304          7,262           6,374            6,290             6,023
Provision for impairment of
   mortgage servicing rights                 -         (4,290)              -           (1,000)            3,000
Other expense                            4,874          4,846           4,552            3,710             3,773
- ---------------------------------------------------------------------------------------------------------------------
  Total                            $    63,593    $    60,821     $    56,837      $    53,804      $     57,193
- ---------------------------------------------------------------------------------------------------------------------
</TABLE>

Personnel  costs  increased  $4.3  million  due to  increased  staffing,  normal
compensation  increases  and  increased  incentive  compensation.  Staffing on a
full-time  equivalent  ("FTE") basis  increased by 211  employees  while average
compensation  per FTE increased by 3.9%.  Incentive  compensation,  which varies
directly with revenue  increased  $909 thousand to $3.6 million for the quarter.
The  increase  in  incentive  compensation  was due to  growth in  revenue  over
pre-determined  targets  and growth in the number of business  units  covered by
incentive plans.  Occupancy,  equipment and data processing costs increased $2.7
million or 29%, which included increases of $922 thousand in net occupancy costs
and $1.4 million in data processing  costs.  The increase in net occupancy costs
was due  primarily  to a  decrease  in rental  income on bank  premises  of $574
thousand. A significant portion of BOK Financial's data processing is outsourced
to third parties.  Therefore,  data processing costs are directly related to the
volume of transactions processed.



<PAGE>

<TABLE>

- ---------------------------------------------------------------------------------------------------------------------
TABLE 5 - OTHER OPERATING EXPENSE, EXCLUDING SIGNIFICANT OR NONRECURRING ITEMS
(In thousands)

                                                                    Three Months Ended
                                      -------------------------------------------------------------------------------
                                           March 31,      Dec. 31,        Sept. 30,       June 30,       March 31,
                                             1999           1998            1998           1998            1998
                                      -------------------------------------------------------------------------------

<S>                                    <C>            <C>             <C>             <C>            <C>        
Total other operating expense          $    63,593    $    60,821     $    56,837     $    53,804    $    57,193
Contribution of stock to BOk
  Charitable Foundation                          -              -               -               -         (2,257)
Provision for impairment of mortgage
   servicing rights                              -          4,290               -           1,000         (3,000)
Net gains and operating costs from
   repossessed assets                        1,296             91              19             315             55
- ---------------------------------------------------------------------------------------------------------------------
  Total                                $    64,889    $    65,202     $    56,856     $    55,119    $    51,991
- ---------------------------------------------------------------------------------------------------------------------
</TABLE>


LINES OF BUSINESS

BOK Financial  operates four  principal  lines of business,  corporate  banking,
consumer banking,  mortgage banking and trust services.  Other lines of business
include the TransFund ATM system,  BOSC,  Inc., Bank of Arkansas,  Bank of Texas
and Bank of Albuquerque.

CORPORATE BANKING

Corporate  banking  contributed  $10.6 million or 53% of consolidated net income
for the first  quarter of 1999  compared to $7.7 million or 47% of  consolidated
net income for the first quarter of 1998. Revenue increased 15% due to increased
loan volumes while operating expenses decreased by $640 thousand.

Table 6  Corporate Banking
              (In Thousands)

                                    Three months ended March 31,
                                 -----------------------------------
                                      1999                1998
                                 ----------------    ----------------
Total revenue                       $     26,475      $      23,044
Operating expense                          9,772             10,412
Net income                                10,572              7,703

Average assets                        $2,598,249         $2,044,630
Average equity                           293,600            247,068

Return on assets                            1.65%              1.53%
Return on equity                           14.60              12.64
Efficiency ratio                           36.91              45.18



<PAGE>


CONSUMER BANKING

Consumer banking  contributed $3.1 million or 16% of consolidated net income for
the first  quarter of 1999 compared to $2.1 million or 13% of  consolidated  net
income for the first quarter of 1998. Total revenue, which consists primarily of
intercompany  credit for funds provided to other  divisions of BOK Financial and
fees generated by various services, increased $1.1 million or 6% compared to the
first quarter of 1999.  Operating  expenses decreased $283 thousand for the same
period.


Table 7  Consumer Banking
              (In Thousands)

                                    Three months ended March 31,
                                 -----------------------------------
                                      1999                1998
                                 ----------------    ----------------
Total revenue                       $     17,693      $      16,625
Operating expense                         11,975             12,258
Net income                                 3,112              2,143

Average assets                        $1,886,641         $1,932,739
Average equity                            43,432             44,813

Return on assets                            0.67%              0.45%
Return on equity                           29.06              19.39
Efficiency ratio                           67.68              73.73


MORTGAGE BANKING

Mortgage  banking  contributed $1.0 million or 5% of consolidated net income for
the first  quarter of 1999 compared to a 901 thousand loss for the first quarter
of 1998. The loss in 1998 was primarily due to a $3.0 million  provision for the
impairment of mortgage  servicing rights.  Total revenue decreased $160 thousand
due to a $644 thousand decrease in servicing revenue.  The decrease in servicing
revenue  was  partially  offset by an  increase in gains of the sale of mortgage
loans.

Capitalized  mortgage  servicing  rights totaled $92.3 million at March 31, 1999
compared to $69.2  million at December  31, 1998.  The  increase in  capitalized
servicing rights was due to $15.3 million in hedging losses and $10.9 million in
costs of newly acquired servicing rights, less amortization.  At March 31, 1999,
realized  hedging gains totaled $9.6 million,  net of accumulated  amortization,
while unrealized losses on open hedging positions totaled $3.1 million.

Table 8  Mortgage Banking
              (In Thousands)

                                    Three months ended March 31,
                                 -----------------------------------
                                      1999                1998
                                 ----------------    ----------------
Total revenue                       $     10,920      $      11,080
Operating expense                          9,261              9,501
Provision for impairment of
   mortgage servicing assets                   -              3,000
Net income                                 1,013               (901)

Average assets                       $   305,660        $   378,799
Average equity                            25,705             29,505

Return on assets                            1.34%             (0.96)%
Return on equity                           15.98             (12.38)
Efficiency ratio                           84.81              85.75


TRUST SERVICES

Trust services contributed $1.6 million or 8% of consolidated net income for the
first quarter of 1999 compared to $1.4 million or 8% of consolidated  net income
for the first  quarter of 1998.  Revenue  from  trust  services  increased  $1.6
million or 15% for the quarter while operating  expenses  increased $1.3 million
or 15%.  Personnel  expenses  accounted  for $1.0  million  of the  increase  in
operating expenses.


Table 9  Trust Services
              (In Thousands)

                                    Three months ended March 31,
                                 -----------------------------------
                                      1999                1998
                                 ----------------    ----------------
Total revenue                       $     12,472      $      10,883
Operating expense                          9,880              8,573
Net income                                 1,584              1,380

Average assets                       $   306,223       $    274,766
Average equity                            33,542             27,657

Return on assets                            2.10%              2.04%
Return on equity                           19.15              20.24
Efficiency ratio                           79.22              78.77


YEAR 2000 CONSIDERATIONS

The Year 2000  issue,  in  general,  is the result of  computer  programs  being
written using two digits  rather than four to define the  applicable  year.  Any
computer  programs that have date sensitive  software may recognize a date using
"00" as the year 1900 rather than the year 2000.  This could  result in a system
failure or miscalculations  causing  disruptions of operations,  including among
other  things,  a temporary  inability to process  transactions  or to engage in
similar normal business activities.

BOK  Financial's  Year 2000  efforts  are under the  direction  of the Year 2000
Oversight Committee,  comprised of various members of executive  management,  as
well as a Year  2000  Project  Team,  which  includes  representatives  from BOK
Financial's major business units. Both groups meet on a regular basis to monitor
and discuss continuing Year 2000 developments. The Board of Directors recognizes
the importance of and supports these Year 2000 initiatives.

The  Federal  Financial  Institution   Examination  Council  ("FFIEC")  provides
regulatory  guidance on BOK Financial's and other financial  institutions'  Year
2000  compliance.  In addition to other  requirements,  the FFIEC  requires that
testing of mission-critical  systems be substantially complete by June 30, 1999.
BOK  Financial  is  well  ahead  of  the  FFIEC  guidelines.  Testing  has  been
successfully completed on all mission-critical,  information technology systems.
For all  mission-critical,  non-information  technology  systems, we have either
completed testing,  satisfactorily,  or have received written representations as
to Year 2000.

FFIEC guidelines also require financial  institutions to substantially  complete
the four  phases  of the Year  2000  business  resumption  contingency  planning
process no later than June 30, 1999. BOK  Financial's  Year 2000 Project Team is
focused on  preparation  for the Year 2000 event.  Plans are being  finalized to
address  certain  situations  that may arise as a result of internal or external
disruptions.  These plans will be completed by June 30, 1999, and will include a
definition  of and a plan to  address  the most  reasonably  likely  worst  case
scenario.  These plans will be simulated or otherwise validated during the third
quarter of 1999. System change control policies require that new enhancements or
initiatives within the company or at our outsourced providers be tested for Year
2000 compliance prior to introduction to our processing environment. This policy
includes severe limitations on all changes from October 1, 1999 through February
29, 2000.  Finally,  plans are being  developed to have key resources  available
throughout all high risk processing  periods during  December,  1999 and January
and February,  2000.  Additional costs to prepare for Year 2000 are not expected
to be significant.

 BOK  Financial has also  communicated  with large  customers to determine  what
steps they have  undertaken  to ensure  they are  prepared  for Year 2000.  This
effort has enabled  BOK  Financial  to adopt  contingency  plans  related to the
possible  effects of the Year 2000 issue on the  credit  risk of its  borrowers,
cash flow disruptions of its funds providers,  and its overall  liquidity needs.
BOK Financial has included the potential  effect of Year 2000 on the credit risk
of its borrowers in determining the adequacy of its loan loss reserve.

The foregoing forward-looking statements,  including the costs of addressing the
Year 2000 issue and the dates upon which  compliance  will be attained,  reflect
management's  current  assessment and estimates with respect to BOK  Financial's
Year 2000  compliance  effort.  Various  factors  could cause  actual  plans and
results  to differ  materially  from  those  contemplated  by such  assessments,
estimates and forward-looking  statements,  many of which are beyond the control
of BOK Financial.  Some of these factors include,  but are not limited to, third
party modification plans,  availability of technological and monetary resources,
representations by vendors and counter parties, technological advances, economic
considerations  and consumer  perceptions.  BOK Financial's Year 2000 compliance
program is an ongoing process involving continual  evaluation and may be subject
to change in response to new developments.

Assessment of Financial Condition

The  aggregate  loan  portfolio at March 31, 1999  increased $39 million to $3.6
billion  during  the  first  quarter  of 1999.  Approximately  $100  million  of
automobile  loans and $52 million of student loans,  both of which were reported
as consumer loans, were sold during the quarter. Commercial loans increased $148
million and commercial real estate loans increased $48 million, respectively.

While BOK Financial  continues to increase  geographic  diversification  through
expansion in the Dallas,  Texas and  Albuquerque,  New Mexico areas,  geographic
concentration  subjects the loan portfolio to the general economic conditions in
Oklahoma.  Notable loan  concentrations by the primary industry of the borrowers
are presented in Table 10.  Agriculture  includes loans totaling $190 million to
the cattle  industry and services  includes  loans  totaling $113 million to the
hotel industry. Commercial real estate loans are secured primarily by properties
in the Tulsa or Oklahoma City metropolitan  areas. The major components of other
real estate loans are office buildings, $167 million and retail facilities, $126
million.

<TABLE>
- ------------------------------------------------------------------------------------------------------
TABLE 10 - LOANS
(In thousands)

                                      March 31,      Dec 31,      Sept. 30,       June 30,   March 31,
                                        1999          1998          1998            1998        1998
                                    ------------------------------------------------------------------
<S>                                  <C>           <C>            <C>         <C>         <C>           
Commercial:
  Energy                             $   483,460   $  467,259    $   359,986  $   315,051 $   324,052
  Manufacturing                          275,815      240,633        229,495      223,540     222,385
  Wholesale/retail                       305,897      264,691        280,917      275,544     250,702
  Agricultural                           207,502      155,103        143,061      133,148     159,324
  Services                               628,952      615,285        533,550      496,347     473,684
  Other commercial and industrial        188,039      198,385        127,017      138,278     139,516
Commercial real estate:
  Construction and land development      202,282      172,258        149,679      139,323     123,412
  Multifamily                            188,075      178,217        150,150      115,821      95,335
  Other real estate loans                402,116      393,578        339,314      310,417     283,329
Residential mortgage:
  Secured by 1-4 family
    residential properties               464,722      482,097        442,443      390,765     404,481
  Residential mortgages held for          80,176       98,616         82,200       98,912     118,777
    sale
Consumer                                 164,362      285,819        230,702      245,722     241,299
- ------------------------------------------------------------------------------------------------------
  Total                              $ 3,591,398   $3,551,941    $ 3,068,514  $ 2,882,868 $ 2,836,296
- ------------------------------------------------------------------------------------------------------
</TABLE>


SUMMARY OF LOAN LOSS EXPERIENCE

The reserve for loans losses,  which is available to absorb  losses  inherent in
the loan  portfolio,  totaled  $68  million at March 31, 1999 and $65 million at
December 31, 1998.  This  represents  1.94% and 1.88% of total loans,  excluding
loans held for sale,  at March 31, 1999 and  December  31,  1998,  respectively.
Losses on loans  held for  sale,  principally  mortgage  loans  accumulated  for
placement in securitized  pools, are charged to earnings through  adjustments in
carrying  value  to the  lower  of cost  or  market  value  in  accordance  with
accounting  standards   applicable  to  mortgage  banking.   Table  11  presents
statistical  information regarding the reserve for loan losses for the past five
quarters.

<TABLE>
- -------------------------------------------------------------------------------------------------------------------
TABLE 11 - SUMMARY OF LOAN LOSS EXPERIENCE
(In thousands)

                                                                 Three Months Ended
                                  ---------------------------------------------------------------------------------
                                       March 31,      Dec. 31,        Sept. 30,       June 30,        March 31,
                                         1999           1998            1998            1998             1998
                                  ---------------------------------------------------------------------------------
<S>                                <C>            <C>             <C>             <C>             <C>          
Beginning balance                  $      64,931  $      62,131   $      57,782   $      54,839   $      53,101
 Loans charged-off:
  Commercial                                   2              -             532           1,339             172
  Commercial real estate                      35          1,132              50              92               -
  Residential mortgage                         1             33              28              19              50
  Consumer                                 1,162             54             888             845           1,305
- -------------------------------------------------------------------------------------------------------------------
  Total                                    1,200          2,158           1,498           2,295           1,527
- -------------------------------------------------------------------------------------------------------------------
 Recoveries of loans previously charged-off:
   Commercial                                133             33             796             534             120
   Commercial real estate                    236            516             551             170             161
   Residential mortgage                        -              -               -              80              82
   Consumer                                  489            382             499             501             432
- -------------------------------------------------------------------------------------------------------------------
    Total                                    858            931           1,846           1,285             795
- -------------------------------------------------------------------------------------------------------------------
Net loans charged-off                        342          1,227            (348)          1,010             732
 Provision for loan losses                 3,370          4,027           4,001           3,953           2,470
- -------------------------------------------------------------------------------------------------------------------
Ending balance                     $      67,959  $      64,931   $      62,131   $      57,782   $      54,839
- -------------------------------------------------------------------------------------------------------------------
 Reserve to loans outstanding
  at period-end(1)                          1.94           1.88            2.08            2.08            2.02
 Net loan losses (annualized)
  to average loans (1)                      0.04           0.09           (0.05)           0.14            0.10
- -------------------------------------------------------------------------------------------------------------------
(1) Excludes  residential  mortgage loans held for sale which are carried at the
lower of aggregate cost or market value.
</TABLE>


<PAGE>

The adequacy of the reserve for loan losses is assessed by management based upon
an ongoing quarterly evaluation of the probable estimated losses inherent in the
portfolio,  and includes  probable losses on both  outstanding  loans and unused
commitments to provide  financing.  A consistent  methodology has been developed
that includes reserves assigned to specific  criticized loans,  general reserves
that are based upon a statistical migration analysis for each category of loans,
and  unallocated  reserves  that are based upon an analysis of current  economic
conditions,  loan concentrations,  portfolio growth, and other relevant factors.
An independent  Credit  Administration  department is responsible for performing
this  evaluation  for all of BOK  Financial's  subsidiaries  to ensure  that the
methodology is applied consistently.

All   significant   criticized   loans  are  reviewed   quarterly  with  written
documentation.  Specific  reserves for  impairment  are determined in accordance
with  generally  accepted  accounting  principles  and  appropriate   regulatory
standards. At March 31, 1999, specific impairment reserves totaled $1.5 million.

The adequacy of general loan loss  reserves is determined  primarily  through an
internally developed migration analysis model.  Management uses an eight-quarter
aggregate  accumulation of net loan losses as the basis for this model.  Greater
emphasis is placed on net loan losses in the more recent periods.  This model is
used to assign  general  loan loss  reserves  to  commercial  loans and  leases,
residential  mortgage loans and consumer loans. All loans, leases and letters of
credit are allocated a migration  factor by this model.  Management can override
the general  allocation only by utilizing a specific  allocation that is greater
than the general allocation.

A nonspecific  allowance  for loan losses is  maintained  for risks beyond those
factors  specific to a  particular  loan or those  identified  by the  migration
analysis.  These factors  include trends in general  economic  conditions in BOK
Financial's  primary  lending areas,  duration of the business  cycle,  specific
conditions in  industries  where BOK  Financial  has a  concentration  of loans,
overall growth in the loan portfolio, bank regulatory examination results, error
potential in either the migration  analysis model or in the underlying data, and
other relevant factors.  A range of potential losses is then determined for each
factor  identified.  At March 31, 1999, the loss  potential  ranges for the more
significant factors are:

Concentration  of large loans - $2.1  million to $4.1 million  General  economic
conditions - $1.4 million to $2.8 million
Loan  portfolio  growth and  expansion  into new markets - $1.8  million to $3.5
million

A provision for loan losses is charged against earnings in amounts  necessary to
maintain an adequate  allowance  for loan  losses.  These  provisions  were $3.4
million for the first  quarter of 1999  compared  to $2.5  million for the first
quarter of 1998.



<PAGE>


NON-PERFORMING ASSETS

Information regarding non-performing assets, which were $20 million at March 31,
1999  and  $18  million  at  December   31,  1998  is  presented  in  Table  12.
Non-performing loans include non-accrual loans and renegotiated loans.

<TABLE>
- ---------------------------------------------------------------------------------------------------------------------
TABLE 12 - NONPERFORMING ASSETS
(In thousands)
                                                  March 31,      Dec. 31,     Sept. 30,    June 30,      March 31,
                                                    1999          1998          1998         1998           1998
                                              -----------------------------------------------------------------------
<S>                                            <C>            <C>          <C>          <C>           <C>        
Nonperforming assets:
 Nonperforming loans:
  Nonaccrual loans:
   Commercial                                  $     9,677    $     8,386  $     8,430  $     9,045   $    12,556
   Commercial real estate                            2,522          1,684        2,105        2,473         2,824
   Residential mortgage                              1,490          1,928        2,410        2,072         2,243
   Consumer                                          1,318          1,118        1,068        1,145         1,192
- ---------------------------------------------------------------------------------------------------------------------
    Total nonaccrual loans                          15,007         13,116       14,013       14,735        18,815
Renegotiated loans                                       -              -            -            -             -
- ---------------------------------------------------------------------------------------------------------------------
   Total nonperforming loans                        15,007         13,116       14,013       14,735        18,815
Other nonperforming assets                           4,820          4,600        4,353        5,590         5,366
- ---------------------------------------------------------------------------------------------------------------------
 Total nonperforming assets                    $    19,827    $    17,716  $    18,366  $    20,325   $    24,181
- ---------------------------------------------------------------------------------------------------------------------
Ratios:
 Reserve for loan losses to
  Nonperforming loans                              452.85%        495.05%      443.38%      392.14%       291.46%
 Nonperforming loans to
  Period-end loans (2)                               0.43           0.38         0.47         0.53          0.69
- ---------------------------------------------------------------------------------------------------------------------
Loans past due (90 days)  (1)                 $    12,917    $     9,414  $     15,594  $    21,568  $     18,330
- ---------------------------------------------------------------------------------------------------------------------
(1) Includes residential mortgages guaranteed
        by agencies of the U.S. Government    $     7,674    $     8,122  $     8,449  $     7,569   $     7,240
    Excludes residential mortgages
guaranteed
        by agencies of the U.S. Government in
        foreclosure.                                7,099          6,953        9,742        9,818         8,766
(2) Excludes residential mortgage loans held for sale
- ---------------------------------------------------------------------------------------------------------------------
</TABLE>


The loan review process also identifies  loans that possess more than the normal
amount of risk due to deterioration  in the financial  condition of the borrower
or the  value  of the  collateral.  Because  the  borrowers  are  performing  in
accordance  with  the  original  terms  of the  loan  agreements  and no loss of
principal  or  interest  is  anticipated,  such  loans are not  included  in the
Non-performing   Assets  totals.  These  loans  are  assigned  to  various  risk
categories  in order to focus  management's  attention  on the loans with higher
risk of loss.  At March 31, 1999,  loans  totaling $71 million were  assigned by
management to the substandard  risk category and loans totaling $25 million were
assigned to the special  mention risk category,  compared to $60 million and $31
million, respectively, at December 31, 1998.

MARKET RISK

Market risk is a broad term for the risk of economic loss due to adverse changes
in the fair value of a financial instrument.  These changes may be the result of
various factors,  including  interest rates,  foreign exchange rates,  commodity
prices, or equity prices.  Additionally,  the financial  instruments  subject to
market risk can be  classified  either as held for trading or held for  purposes
other than trading.


BOK Financial is subject to market risk primarily  through the effect of changes
in interest  rates on both its portfolio of assets held for purposes  other than
trading  and  trading  assets.  The  effect of other  changes,  such as  foreign
exchange rates, commodity prices or equity prices, do not pose a material market
risk to BOK Financial.  The  responsibility  for managing market risk rests with
the Asset/Liability Committee which operates under policy guidelines established
by the Board of  Directors.  The negative  acceptable  variation in net interest
revenue  and  economic  value of equity  due to a 200 basis  point  increase  or
decrease in interest rates is generally  limited by these guidelines to +/- 10%.
These  guidelines  also  establish  maximum  levels for  short-term  borrowings,
short-term  assets,  and public and brokered  deposits,  and  establish  minimum
levels  for  unpledged  assets,  among  other  things.   Compliance  with  these
guidelines is reviewed monthly.

Interest Rate Risk Management (Other than Trading)

BOK Financial performs a sensitivity  analysis to identify more dynamic interest
rate risk  exposures,  including  embedded  option  positions,  on net  interest
revenue,  net income and economic value of equity. A simulation model is used to
estimate  the effect of changes in interest  rates over the next  twelve  months
based three interest rate scenarios. These are a "most likely" rate scenario and
two "shock test"  scenarios,  the first assuming a sustained  parallel 200 basis
point  increase and the second a sustained  parallel 200 basis point decrease in
interest  rates.  An  independent  source is used to  determine  the most likely
interest  rates  for the  next  year.  BOK  Financial's  primary  interest  rate
exposures  include  the  Federal  Reserve  Bank's  discount  rate which  affects
short-term borrowings,  the prime lending rate and the London InterBank Offering
Rate ("LIBOR") which are the basis for much of the  variable-rate  loan pricing,
the 30-year  mortgage  rate which  directly  affects the  prepayment  speeds for
mortgage-backed  securities and mortgage  servicing rights, and the 10-year U.S.
Treasury  rate  which  affects  the  value  of the  mortgage  servicing  hedges.
Derivative  financial  instruments  and  other  financial  instruments  used for
purposes  other than  trading are  included  in this  simulation.  In  addition,
sensitivity of fee income to market interest rate levels,  such as those related
to cash  management  services and  mortgage  servicing,  is included.  The model
incorporates  management's  assumptions  regarding the level of interest rate or
balance  changes  on   indeterminable   maturity   deposits  (demand   deposits,
interest-bearing transaction accounts and savings accounts) for a given level of
market rate changes.  The assumptions have been developed  through a combination
of historical analysis and future expected pricing behavior. Interest rate swaps
on all  products  are  included  to the extent  that they are  effective  in the
12-month  simulation  period.  Additionally,  changes in prepayment  behavior of
mortgage-backed securities, residential mortgage loans and mortgage servicing in
each rate environment are captured using industry estimates of prepayment speeds
for various  coupon  segments of the portfolio.  Finally,  the impact of planned
growth and new business  activities is factored into the  simulation  model.  At
March 31, 1999 and 1998, this modeling  indicated  interest rate  sensitivity as
follows:

<TABLE>
- --------------------------------------------------------------------------------------------------------------------
Table 13 - Interest Rate Sensitivity
                (Dollars in Thousands)

                                    200 bp Increase                200 bp Decrease                Most Likely
                                -------------------------     --------------------------    ------------------------
                                   1999         1998             1999          1998             1999        1998
                                ------------ ------------     ------------ -------------    ------------- ----------
<S>                             <C>             <C>              <C>         <C>              <C>           <C>     
Anticipated impact over the next twelve months:
   Net interest revenue         $    (1,394)    $    2,491       $   (477)   $   (3,130)      $     (69)    $  (736)
                                       (0.6)%          1.3%          (0.2)%        (1.6)%           0.0%       (0.4)%
- ------------------------------- -------------- ------------- --- ----------- ------------- --- ----------- -----------
   Net income                   $   (1,171)     $    5,075       $ (1,772)   $  (26,987)      $     (80)    $  (410)    
                                      (1.3)%           6.7%          (2.0)%       (35.6)%            0.0%      (0.5)%
- ------------------------------- -------------- ------------- --- ----------- ------------- --- ----------- -----------
   Economic value of equity      $ (86,488)     $   (9,092)      $  4,251    $   (7,780)      $  (11,192)   $ 4,717                
                                     (10.0)%          (1.3)%          0.5%         (1.0)%           (1.3)%      0.7%
- ------------------------------- -------------- ------------- --- ----------- ------------- --- ------------ ----------
</TABLE>

The estimated changes in interest rates on net interest revenue or net income is
not  projected  to be  significant  within  the +/- 200  basis  point  range  of
assumptions.  However,  this modeling  indicated  that under the 200 basis point
increase  scenario,  BOK Financial's  economic value of equity would decrease by
$86.5 million due primarily to the effect of rising  interest rates on the value
of the securities portfolio.

<PAGE>

BOK Financial  hedges its loss exposure  from the  prepayment of mortgage  loans
that it services  through  the use of futures  contracts,  call  options and put
options. These derivatives are based upon 10-year U.S. Treasury securities.  The
changes in value of these derivatives have a highly correlated, inverse relation
to  changes  in  value of the  mortgage  servicing  rights.  The  interest  rate
sensitivity of the mortgage servicing portfolio and the related hedge is modeled
over a range of + or - 50 basis points.  At March 31, 1999, the pre-tax  results
of this modeling are as follows:

                                    50 bp increase       50 bp decrease
                                   -----------------    ------------------
Anticipated change in:
Mortgage servicing rights            $      8,014       $    (12,437)
Hedging instruments                       (11,123)             9,770
                                   =================    ==================
Net                                  $    ( 3,109)      $     (2,667)
                                   =================    ==================

The  simulations  used to manage  market risk are based on numerous  assumptions
regarding  the effect of changes in  interest  rates on the timing and extent of
repricing  characteristics,  future  cash  flows and  customer  behavior.  These
assumptions  are  inherently  uncertain  and,  as a  result,  the  model  cannot
precisely estimate net interest revenue,  net income or economic value of equity
or  precisely  predict  the  impact  of higher  or lower  interest  rates on net
interest  revenue,  net income or economic value of equity.  Actual results will
differ from simulated results due to timing, magnitude and frequency of interest
rate changes and changes in market conditions and management  strategies,  among
other factors.

BOK Financial uses interest rate swaps, a form of off-balance  sheet  derivative
product, in managing its interest rate sensitivity. These products are generally
used to more closely match interest paid on certain  long-term  certificates  of
deposit and  subordinated  debt with earning assets.  BOK Financial  accrues and
periodically  receives a fixed amount from the counterparties to these swaps and
accrues and periodically makes a variable payment to the counterparties. For the
first quarter of 1999, income from these swaps exceeded the cost of the swaps by
$227  thousand.   Credit  risk  from  these  swaps  is  closely   monitored  and
counterparties  to these  contracts  are  selected on the basis of their  credit
worthiness,   among  other  factors.   Derivative  products  are  not  used  for
speculative purposes.

- --------------------------------------------------------------------------------
TABLE 14 - INTEREST
RATE SWAPS
(In thousands)
                      Notional       Pay            Receive          Fair
                       Amount        Rate            Rate           Value
                   -------------------------------------------------------------
Expiration:
  1999                 7,000         5.06 %(1)     6.80%                59
  2001                 4,292         5.03 (1)      4.94 (1)             25
  2002                 7,660         6.21          4.94 (1)           (156)
  2003                41,053    4.82 - 5.99        4.94 (1)            360
  2004                23,553    5.65 - 5.95        4.94 (1)           (158)
  2005                 8,289     5.08 - 5.21       4.94 (1)            183
  2006                16,500         7.26 (1)      5.00 (1)           (826)
  2007               100,000         4.94(1)      6.75 - 6.80        6,032
  2007                14,372    5.23 - 7.47      4.94 - 5.00(1)       (452)
  2008                28,490    5.15 - 5.66        4.94 (1)            784
  2009                32,011    5.22 - 5.88        4.94 (1)            798
- --------------------------------------------------------------------------------
(1)  Rates  are  variable  based  on  LIBOR  and  reset  monthly,  quarterly  or
semiannually.


Trading Activities

BOK Financial enters into trading account activities both as an intermediary for
customers and for its own account.  As an intermediary,  BOK Financial will take
positions in securities, generally mortgage-backed securities, government agency
securities,  and municipal  bonds.  These securities are purchased for resale to
customers,  which  include  individuals,  corporations,  foundations,  and other
financial  institutions.  BOK Financial will also take trading positions in U.S.
Treasury securities,  mortgage-backed securities,  municipal bonds and financial
futures for its own account through BOk and BOSC. These positions are taken with
the objective of generating  trading profits.  Both of these activities  involve
interest rate risk.

A variety  of  methods  are used to manage  the  interest  rate risk of  trading
activities.  These  methods  include  daily  marking of all  positions to market
value,  independent  verification of inventory pricing,  and position limits for
each trading activity.  Hedges in either the futures or cash markets may be used
to reduce the risk associated with some trading  positions.  The Risk Management
Department  monitors trading activity daily and reports to senior management and
the Risk  Overssight  and  Audit  Committee  of the  Board of  Directors  on any
exceptions to trading position limits and risk management policy.

BOK  Financial  uses a Value at Risk ("VAR")  methodology  to measure the market
risk inherent in its trading activities. VAR is calculated based upon historical
simulations  over the past five years.  It  represents  an amount of market loss
that is  likely  to be  exceeded  only one out of every  100  two-week  periods.
Trading  positions  are  managed  within  guidelines  approved  by the  Board of
Directors.  These guidelines limit the nominal  aggregate  trading  positions to
$360  million  and the VAR to $6.5  million.  At March  31,  1999,  the  nominal
aggregate trading positions was $30 million, the VAR was $1.2 million.


- --------------------------------------------------------------------------------
TABLE 15 - CAPITAL RATIOS
                            March 31,   Dec.31,   Sept. 30,  June 30,  March 31,
                               1999       1998       1998       1998        1998
                             ---------------------------------------------------
Average shareholders' equity
  to average assets           7.56%      8.09        8.29%      8.18%     8.00%
Risk-based capital:
  Tier 1 capital               8.06       7.80        9.44       9.35      9.47
  Total capital               12.15      11.96       14.11      14.15     14.47
Leverage                       6.31       6.57        7.28       7.24      6.81


REPORT OF MANAGEMENT ON CONSOLIDATED FINANCIAL STATEMENTS

Management is responsible for the consolidated  financial  statements which have
been prepared in accordance with generally accepted  accounting  principles.  In
management's  opinion,  the  accompanying   unaudited   consolidated   financial
statements  contain all adjustments  (consisting of normal  recurring  accruals)
necessary to present fairly the financial  condition,  results of operations and
cash  flows of BOK  Financial  and its  subsidiaries  at the  dates  and for the
periods presented.

The financial  information  included in this interim report has been prepared by
management without audit by independent public accountants and should be read in
conjunction  with BOK Financial's  1998 Form 10-K to the Securities and Exchange
Commission which contains audited financial statements.


<PAGE>

- -------------------------------------------- --- -------------- --- ------------
Consolidated Statement of Earnings
(In Thousands Except Share Data)
                               Three Months Ended
                                    March 31
                                                 -------------------------------
                                                     1999               1998
                                                 -------------- --- ------------
Interest Revenue
Loans                                         $    70,500        $    60,737
Taxable securities                                 31,212             27,235
Tax-exempt securities                               3,922              3,918
- -------------------------------------------- --- -------------- --- ------------
   Total securities                                35,134             31,153
- -------------------------------------------- --- -------------- --- ------------
Trading securities                                    696                163
Funds sold                                            178                691
- -------------------------------------------- --- -------------- --- ------------
   Total interest revenue                         106,508             92,744
- -------------------------------------------- --- -------------- --- ------------
Interest Expense
Deposits                                           32,500             33,383
Other borrowings                                   21,762             14,958
Subordinated debenture                              2,348              2,367
- -------------------------------------------- --- -------------- --- ------------
   Total interest expense                          56,610             50,708
- -------------------------------------------- --- -------------- --- ------------
Net Interest Revenue                               49,898             42,036
Provision for Loan Losses                           3,370              2,470
- -------------------------------------------- --- -------------- --- ------------
Net Interest Revenue After
Provision for Loan Losses                          46,528             39,566
- -------------------------------------------- --- -------------- --- ------------
Other Operating Revenue
Brokerage and trading revenue                       4,347              3,131
Transaction card revenue                            7,555              5,540
Trust fees and commissions                          7,762              6,884
Service charges and fees on deposit                 9,159              7,638
accounts
Mortgage banking revenue, net                       9,195              9,321
Leasing revenue                                     1,868              1,661
Other revenue                                       5,014              2,685
- -------------------------------------------- --- -------------- --- ------------
Total fees and commissions revenue                 44,900             36,860
- -------------------------------------------- --- -------------- --- ------------
Gain on sale of student loans                         529              1,415
Gain on loan securitization                           270                  -
Gain on sale of other assets                          892                  -
Securities gains, net                                 274              2,512
- -------------------------------------------- --- -------------- --- ------------
Total other operating revenue                      46,865             40,787
- -------------------------------------------- --- -------------- --- ------------
Other Operating Expense
Personnel                                          31,106             24,829
Business promotion                                  2,459              1,897
Contribution of stock to BOk
   Charitable     Foundation                            -              2,257
Professional fees and services                      1,839              1,596
Net occupancy, equipment & data processing         12,996              9,214
FDIC and other insurance                              315                310
Printing, postage and supplies                      2,751              2,047
Net(gains) losses, and operating
expenses of repossessed assets                     (1,296)               (55)
Amortization of intangible assets                   3,245              2,302
Mortgage banking costs                              5,304              6,023
Provision for impairment of mortgage
   servicing rights                                     -              3,000
Other expense                                       4,874              3,773
- -------------------------------------------- --- -------------- --- ------------
Total other operating expense                      63,593             57,193
- -------------------------------------------- --- -------------- --- ------------
Income Before Taxes                                29,800             23,160
Federal and state income tax                        9,983              6,847
- -------------------------------------------- --- -------------- --- ------------
Net Income                                    $    19,817        $    16,313
================================================================================
Earnings Per Share:
Net Income
   Basic                                      $      0.43        $      0.35
- -------------------------------------------- --- -------------- --- ------------
   Diluted                                    $      0.38        $      0.31
- -------------------------------------------- --- -------------- --- ------------
Average Shares Used in Computation:
   Basic                                       45,096,353         45,228,538
- -------------------------------------------- ------------------ ----------------
   Diluted                                     51,747,293         51,933,968
- -------------------------------------------- ------------------ ----------------
See accompanying notes to consolidated financial statements.


<PAGE>


<TABLE>
- --------------------------------------------------------------------------------------------------------------------
CONSOLIDATED BALANCE SHEETS
(In Thousands Except Share Data)

                                                                   March 31,       December 31,         March 31,
                                                                     1999              1998              1998
                                                                 ---------------------------------------------------
<S>                                                            <C>              <C>               <C>           
ASSETS
Cash and due from banks                                        $      405,396   $      426,265    $      410,369
Funds sold                                                              8,031            9,151             5,450
Trading securities                                                     51,924           41,138            19,027
Securities:
  Available for sale                                                2,375,630        2,219,636         1,873,390
  Investment (fair value:  March 31, 1999 - $229,719;
    December 31, 1998 -$227,754;
    March 31, 1998 - $222,545)                                        230,190          227,777           221,825
- --------------------------------------------------------------------------------------------------------------------
    Total securities                                                2,605,820        2,447,413         2,095,215
- --------------------------------------------------------------------------------------------------------------------
Loans                                                               3,591,398        3,551,941         2,836,296
Less reserve for loan losses                                           67,959           64,931            54,839
- --------------------------------------------------------------------------------------------------------------------
  Net loans                                                         3,523,439        3,487,010         2,781,457
- --------------------------------------------------------------------------------------------------------------------
Premises and equipment, net                                            86,662           81,965            58,109
Accrued revenue receivable                                             70,293           62,630            53,019
Excess cost over fair value of net assets acquired
  and core deposit premiums (net of accumulated
  amortization: March 31, 1999 - $52,198;
  December 31, 1998 - $48,953;
  March 31, 1998 - $41,884)                                            93,933           95,935            65,494
Mortgage servicing rights                                              92,305           69,224            80,274
Real estate and other repossessed assets                                4,820            4,600             5,366
Other assets                                                          101,377           84,017            58,887
- --------------------------------------------------------------------------------------------------------------------
Total assets                                                   $    7,044,000   $    6,809,348    $    5,632,667
====================================================================================================================

LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing demand deposits                            $    1,082,443   $    1,126,860    $      978,490
Interest-bearing deposits:
  Transaction                                                       1,415,389        1,420,573         1,159,160
  Savings                                                             151,744          146,751           113,172
  Time                                                              1,693,359        1,685,046         1,768,552
- --------------------------------------------------------------------------------------------------------------------
    Total deposits                                                  4,342,935        4,379,230         4,019,374
- --------------------------------------------------------------------------------------------------------------------
Funds purchased and repurchase
  agreements                                                        1,050,955        1,039,533           614,534
Other borrowings                                                      893,819          660,347           345,602
Subordinated debenture                                                148,504          146,921           148,388
Accrued interest, taxes and expense                                    55,784           57,357            41,217
Other liabilities                                                      32,796           20,846            14,917
- --------------------------------------------------------------------------------------------------------------------
    Total liabilities                                               6,524,793        6,304,234         5,184,032
- --------------------------------------------------------------------------------------------------------------------
Stockholders' equity:
Preferred stock                                                            25               25                23
Common stock ($.00006 par value; 2,500,000,000
  Shares authorized;  shares issued and outstanding 
March 31, 1999 - 45,165,849; December 31, 1998
  - 45,061,350; March 31, 1998 - 44,020,220)                                3                3                 3
Capital surplus                                                       234,387          233,022           209,748
Retained earnings                                                     281,264          261,822           234,567
Treasury stock (shares at cost: March 31, 1999 - 41,038;
  December 31, 1998 - 23,792;  March 31, 1998 - 222,818)                 (918)            (565)           (4,410)
Accumulated other comprehensive income                                  4,446           10,807             8,708
Less notes receivable from exercise of stock options                        -                -                (4)
- --------------------------------------------------------------------------------------------------------------------
    Total shareholders' equity                                        519,207          505,114           448,635
- --------------------------------------------------------------------------------------------------------------------
Total liabilities and shareholders' equity                     $    7,044,000   $    6,809,348    $    5,632,667
====================================================================================================================

See accompanying notes to consolidated financial statements.
</TABLE>



<PAGE>
<TABLE>
- ----------------------------------------------------------------------------------------------------------------------
CONSOLIDATED STATEMENTS OF CHANGES IN
SHAREHOLDERS EQUITY
(In Thousands)
                                                          
                                                             
                                                        Accumulated                            
                      Preferred Stock   Common   Stock    Other                            Treasury  Stock          
                    ------------------------------------Comprehensive Capital   Retained --------------------    Notes
                      Shares  Amount    Shares   Amount   Income      Surplus   Earnings   Shares   Amount    Receivable     Total
                    ----------------------------------------------------------------------------------------------------------------
<S>                  <C>       <C>       <C>     <C>      <C>       <C>         <C>         <C>    <C>         <C>        <C>      
 December 31, 1997   250,000   $  23     43,951  $    3   $ 10,691  $  208,325  $ 218,629   133    $ (2,190)   $   (4)    $ 435,477 
Comprehensive income:
  Net income               -       -          -       -          -           -     16,313     -           -         -        16,313
  Other comprehensive
  income, net of tax:
    Unrealized gains
   (loss)on securities
   available for sale(1)   -       -          -       -     (1,983)          -          -     -           -         -        (1,983)
                                                                                                                         -----------
  Comprehensive income                                                                                                       14,330
                                                                                                                         -----------
Exercise of stock options  -       -         47       -          -         973          -    16        (346)        -           627
Preferred dividends paid
in shares of common stock  -       -         18       -          -         375       (375)    -           -         -             -
Director retainer shares   -       -          4       -          -          75          -     -           -         -            75
Treasury stock purchase    -       -          -       -          -           -          -    74      (1,874)        -        (1,874)
- ------------------------------------------------------------------------------------------------------------------------------------
Balance at 
  March 31, 1998     250,000   $  23     44,020   $   3   $  8,708  $  209,748  $ 234,567   223    $ (4,410)   $   (4)    $ 448,635 
====================================================================================================================================

Balances at
 December 31, 1998   250,000   $  25     45,061   $   3   $ 10,807  $  233,022  $ 261,822    24    $   (565)   $    -     $ 505,114
Comprehensive income:
  Net income               -       -          -       -          -           -     19,817     -           -         -        19,817
  Other Comprehensive 
  Income, net of tax:
    Unrealized gains
    (loss)on securities 
    available for sale(1)  -       -          -       -     (6,361)          -          -     -           -         -        (6,361)
                                                                                                                         -----------
Comprehensive income                                                                                                         13,456
                                                                                                                         -----------
Exercise of stock options  -       -         71       -          -         595          -    14        (285)        -           310
Issuance of common 
  stock to Thrift Plan     -       -         14       -          -         322          -    (1)         33         -           355
Preferred dividends paid
 in shares of common stock -       -         17       -          -         375       (375)    -           -         -             - 
Director retainer shares   -       -          3       -          -          73          -     -           -         -            73
Treasury stock purchase    -       -          -       -          -           -          -     1        (101)        -          (101)
- ------------------------------------------------------------------------------------------------------------------------------------

Balances at
  March 31, 1999     250,000   $   25    45,166    $  3    $ 4,446  $  234,387    281,264    41     $  (918)   $    -     $  519,207
====================================================================================================================================
<FN>

(1)                                   March 31, 1999     March 31, 1998
                                      --------------     --------------
Reclassification adjustments:
  Unrealized losses on available        $     (6,449)        $    (214)
for sale securities
  Less:  reclassification
adjustment for gains realized 
  Included in net income, net of tax             182             1,769
                                     --------------------------------------
Net unrealized losses on securities      $    (6,631)       $   (1,983)
                                     ======================================
</FN>

See accompanying notes to consolidated financial statements.
</TABLE>


<PAGE>

<TABLE>
- ----------------------------------------------------------------------------------------------------
CONSOLIDATED STATEMENTS OF CASH FLOWS
(In Thousands Except Share Data)
                                                                       Three Months Ended
                                                                           March 31,
                                                              --------------------------------------
                                                                     1999                1998
                                                              --------------------------------------
<S>                                                            <C>                    <C>     
Cash Flow From Operating Activities:
Net income                                                     $     19,817           $ 16,313
Adjustments to reconcile net income to net cash
  provided (used) by operating activities:
  Provision for loan losses                                           3,370              2,470
  Depreciation and amortization                                      11,850              9,193
  Provision for impairment of mortgage servicing rights                   -              3,000
  Net amortization of  security discounts and premiums                  310                364
  Contribution of stock to BOk Charitable Foundation                      -              2,257
  Net gain on sale of assets                                         (5,599)            (5,590)
  Mortgage loans originated for resale                             (198,720)          (221,621)
  Proceeds from sale of mortgage loans held for resale              219,513            183,078
  Increase in trading securities                                     (2,738)           (14,028)
  Increase in accrued revenue receivable                             (7,663)            (2,264)
  Increase in other assets                                          (17,442)            (1,142)
  Increase in accrued interest, taxes and expense                     5,273              1,401
  Increase (decrease) in other liabilities                           11,339             (2,302)
- ----------------------------------------------------------------------------------------------------
Net cash provided (used) by operating activities                     39,310            (28,871)
- ----------------------------------------------------------------------------------------------------
Cash Flow From Investing Activities:
  Proceeds from maturities of investment securities                  19,375              7,364
  Proceeds from maturities of available for sale securities          91,087             97,875
  Purchases of investment securities                                (21,855)           (16,894)
  Purchases of available for sale securities                       (713,823)          (690,995)
  Proceeds from sales of available for sale securities              453,566            466,935
  Loans originated or acquired net or principal collected          (210,839)           (85,115)
  Proceeds from disposition of assets                               151,278             63,737
  Purchases of assets                                               (37,985)           (11,900)
  Cash and cash equivalents of branches & subsidiaries
    acquired and sold, net                                           (1,339)                 -
- ----------------------------------------------------------------------------------------------------
  Net cash used by investing activities                            (270,535)          (168,993)
- ----------------------------------------------------------------------------------------------------
Cash Flows From Financing Activities:
  Net increase (decrease) in demand deposits, transaction
    deposits, money market deposits, and savings accounts           (44,608)           138,605
  Net increase in certificates of deposit                             8,313            152,690
  Net increase (decrease) in other borrowings                       244,894            (65,766)
  Purchase of treasury stock                                           (101)            (1,874)
  Issuance of preferred, common and treasury stock, net                 738                702
- ----------------------------------------------------------------------------------------------------
Net cash provided by financing activities                           209,236            224,357
- ----------------------------------------------------------------------------------------------------
Net increase (decrease) in cash and cash equivalents                (21,989)            26,493
Cash and cash equivalents at beginning of period                    435,416            389,326
- ----------------------------------------------------------------------------------------------------
Cash and cash equivalents at end of period                     $    413,427      $     415,819
- ----------------------------------------------------------------------------------------------------
Cash paid for interest                                         $     57,447      $      49,503
- ----------------------------------------------------------------------------------------------------
Cash paid for taxes                                            $      8,550      $         353
- ----------------------------------------------------------------------------------------------------
Net loans transferred to repossessed real estate
    and other assets                                           $        840      $         701
- ----------------------------------------------------------------------------------------------------
Payment of preferred stock dividends in common stock           $        375      $         375
- ----------------------------------------------------------------------------------------------------

See accompanying notes to consolidated financial statements
</TABLE>


<PAGE>

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(1)  ACCOUNTING POLICIES

Basis of Presentation
The accounting and reporting  policies of BOK Financial  Corporation  conform to
generally  accepted  accounting  principles and to generally  accepted practices
within the  banking  industry.  The  Consolidated  Financial  Statements  of BOK
Financial include the accounts of BOK Financial and its subsidiaries,  primarily
Bank of Oklahoma,  N.A.  ("BOk"),  Bank of Arkansas N.A.,  Bank of  Albuquerque,
N.A.,  and  Bank of  Texas,  N.A..  Certain  prior  period  balances  have  been
reclassified to conform with the current period presentation.


Effect of Pending Statements of Financial Accounting Standards

During 1998, the Financial  Accounting Standards Board issued Statement No. 133,
"Accounting  for Derivative  Instruments  and Hedging  Activities"  ("FAS 133").
Among other things, FAS 133 requires that all derivative  instruments be carried
on the statement of financial  position at fair value.  Changes in fair value of
the  derivative  instruments  will either be reported in income or as a separate
component of other  comprehensive  income  (shareholders'  equity)  depending on
whether  the  derivative   instrument  meets  certain   requirements  for  hedge
accounting. FAS 133 eliminates the current practice of deferral hedge accounting
where  gains or losses  on  derivative  instruments  designated  as  hedges  are
considered  adjustments  to the carrying value of the hedged asset or liability.
FAS 133 is  effective  for fiscal  years  beginning  after June 15, 1999 and BOK
Financial expects to adopt the standard as of January 1, 2000. BOK Financial has
not yet  determined  what  the  effect  of FAS 133  will be on its  earnings  or
financial position.



(2)   ACQUISITIONS

BOK Financial's acquisition of First Muskogee Bancshares,  Inc. is still pending
regulatory action.  That action by the Federal Reserve Board on this application
is anticipated during the second quarter.



(3)   MORTGAGE BANKING ACTIVITIES

At March 31, 1999,  BOK Financial  owned the rights to service  88,013  mortgage
loans with outstanding principal balances of $6.7 billion, including $73 million
serviced for BOk. The weighted  average  interest  rate and  remaining  term was
7.49% and 278 months, respectively.

Activity  in  capitalized   mortgage  servicing  rights  and  related  valuation
allowance during the three months ending March 31, 1999 is as follows:

<TABLE>

                                                       Capitalized Mortgage Servicing Rights
                              -----------------------------------------------------------------------------------------
                                                                             Valuation          Hedging
                                Purchased      Originated       Total        Allowance      (Gain)/Loss        Net
                              --------------- ------------- --------------- ------------- ----------------- -----------
<S>                           <C>            <C>           <C>           <C>              <C>            <C>              
Balance at
    December 31, 1998         $     70,509   $     21,199  $    91,708   $          -     $    (22,484)  $     69,224             
Additions                            7,871          2,981       10,852              -                -         10,852
Amortization expense                (2,783)          (965)      (3,748)             -              692         (3,056)
Realized hedge losses                    -              -            -              -           11,629         11,629
Unrealized hedge losses                  -              -            -              -            3,656          3,656
- ----------------------------- -- ---------- --- ---------- - ----------- -- ------------- -- ----------- -- -----------
Balance at  March 31, 1999    $     75,597  $      23,215  $    98,812   $          -     $     (6,507)  $     92,305
- ----------------------------- -- ---------- --- ---------- - ----------- -- ------------- -- ----------- -- -----------
Estimated fair value of
    mortgage servicing
    rights (1)                $     75,282   $     27,529      102,811                                   $    102,811             
- ----------------------------- -- ---------- --- ---------- - ----------- -- ------------- -- ----------- -- -----------
(1) Excludes  approximately  $8.4 million of loan  servicing  rights on mortgage
loans originated prior to the adoption of FAS 122.
</TABLE>



<PAGE>

Stratification of the mortgage loan servicing portfolio,  outstanding  principal
of loans serviced, and related hedging information by interest rate at March 31,
1999 follows (in thousands):

<TABLE>

                                     < 6.50%      6.50% - 7.49%     7.50% - 8.49%     => 8.50%        Total
                                   ---------------------------- ---------------- ------------- --------------

<S>                                 <C>          <C>             <C>              <C>           <C>         
Cost less accumulated amortization  $     3,139  $     51,018   $       39,789   $      4,866   $    98,812
Deferred hedge gains                          -        (1,501)          (5,005)             -        (6,507)
- --------------------------------------------------------------- ---------------- ------------- --------------
Adjusted cost                             3,139        49,517           34,784          4,866        92,305
Fair value                                3,565        53,900           38,592          6,753       102,811
- --------------------------------------------------------------- ---------------- ------------- --------------
Impairment                           $        -  $          -   $            -   $          -   $         -
- --------------------------------------------------------------- ---------------- ------------- --------------
Outstanding principal of loans
serviced                              $ 241,935  $  2,818,880   $    2,532,327   $    494,703   $ 6,087,845(1)
- --------------------------------------------------------------- ---------------- ------------- --------------

(1) Excludes  outstanding  principal  of $570,453  for loans  serviced for which
there is no capitalized mortgage servicing rights.
</TABLE>


(4)   DISPOSAL OF AVAILABLE FOR SALE SECURITIES

Sales of available  for sale  securities  for the three months  ending March 31,
1999 and 1998 resulted in gains and losses as follows (in thousands):

       Proceeds                           $   453,566      $  466,935
       Gross realized gains                     1,681           3,157
       Gross realized losses                    1,407             645
     Related federal and state
         income tax expense                        92             743


(5)  LOAN SECURITIZATION

BOK  Financial  securitized  and sold  approximately  $100 million of automobile
loans  during  the first  quarter of 1999.  In  conjunction  with the sale,  BOK
Financial retained the servicing rights associated with the loans and a residual
interest in cash flows in excess of set targets.  These retained  interests were
recorded  at $1.0  million  and $8.0  million,  respectively,  based  upon their
relative fair values.  The fair value of the servicing rights was based upon the
discounted  cash flow of net  servicing  revenue and will be amortized  over the
expected  life  of the  loans  serviced,  adjusted  for  changes  in  prepayment
assumptions.  The fair value of the  residual  interest  in cash flows was based
upon the discounted cash flow from the securitization trust to BOK Financial and
will be  carried at fair value with  unrealized  gains or losses  recognized  in
income.  The significant  assumptions  used to determine the fair value of these
assets are:

                           Servicing Rights      Residual Interest
Discount rate                      10%                  12%
Servicing revenue                   1%                   -
Servicing cost                   $50/loan                -
Term                            45 months            45 months
Default rate                        -                   0.9%


BOSC, Inc. received an underwriting fee of $1.0 million in conjunction with this
transaction.





<PAGE>


(6)  EARNINGS PER SHARE

The following table presents the  computation of basic and diluted  earnings per
share (dollars in thousands except share data):

                                                          Three Months Ended
                                                     ---------------------------
                                                        March 31,     March 31,
                                                          1999           1998
                                                     ---------------------------
Numerator:
   Net income                                              19,817   $    16,313
   Preferred stock dividends                                 (375)         (375)
- --------------------------------------------------------------------------------
Numerator for basic earnings per share - income
   Available to common stockholders                        19,442        15,938
- --------------------------------------------------------------------------------
Effect of dilutive securities:
   Preferred stock dividends                                  375           375
- --------------------------------------------------------------------------------
Numerator for diluted earnings per share - income
  available to common stockholders after assumed 
  conversion                                        $     19,817    $    16,313
- --------------------------------------------------------------------------------
Denominator:
   Denominator for basic earnings per share -weighted
     average shares                                    45,096,353    45,228,538
   Effect of dilutive securities:
     Employee stock options                               680,676       735,166
     Convertible preferred stock                        5,970,264     5,970,264
- --------------------------------------------------------------------------------
Dilutive potential common shares                        6,650,940     6,705,430
- --------------------------------------------------------------------------------
Denominator for diluted earnings per share - adjusted
   Weighted average shares and assumed conversions     51,747,293    51,933,968
- --------------------------------------------------------------------------------
Basic earnings per share                                 $   0.43       $  0.35
- --------------------------------------------------------------------------------
Diluted earnings per share                                $  0.38       $  0.31
- --------------------------------------------------------------------------------

(7)  REPORTABLE SEGMENTS

Reportable segments  reconciliation to the Consolidated  Financial Statements at
March 31, 1999 is as follows:

<TABLE>
                                                                                 
                                        Net Interest   Other Operating   Other Operating       Average
                                           Revenue         Revenue           Expense            Assets
                                       -------------------------------- ------------------ ------------

<S>                                        <C>               <C>           <C>            <C>          
Total reportable lines of business         $ 33,195          $  34,365     $  40,888      $   5,096,773
Total non-reportable lines of business       11,041             11,834        18,803          1,283,014
Unallocated items:
   Tax-equivalent adjustment                 (2,333)                 -             -                  -
   Funds management                           8,007                305         2,570            136,512
   Contribution to BOk Foundation                 -                  -             -                  -
   All others, net                              (12)                87         1,332            233,880
                                       ----------------------------------------------------------------
BOK Financial consolidated                 $ 49,898          $  46,591     $  63,593       $  6,750,179
                                       ================================================================
</TABLE>


<PAGE>

Reportable segments  reconciliation to the Consolidated  Financial Statements at
March 31, 1998 is as follows:

<TABLE>
                                                                       
                                       Net Interest   Other Operating    Other Operating       Average
                                          Revenue       Revenue              Expense            Assets
                                      ------------------------------- ------------------ ------------------
<S>                                      <C>              <C>               <C>             <C>          
Total reportable lines of business       $  30,604        $ 31,028          $  40,744       $   4,630,934
Total non-reportable lines of business       6,327           6,828              9,612             577,376
Unallocated items:
   Tax-equivalent adjustment                (2,330)              -                  -                   -
   Funds management                          7,383           1,994              8,227              (5,385)
   Contribution to BOk Foundation                -               -              2,257                   -
   All others, net                             (52)         (1,575)            (6,647)            351,451
                                      =============================== ================== ==================
BOK Financial consolidated               $  42,036        $ 46,591          $  63,593       $   6,750,179
                                      =============================== ================== ==================
</TABLE>



(8)  CONTINGENT LIABILITIES

In the ordinary  course of business,  BOK  Financial  and its  subsidiaries  are
subject to legal actions and  complaints.  Management  believes,  based upon the
opinion of counsel,  that the actions and liability or loss,  if any,  resulting
from  the  final  outcomes  of the  proceedings,  will  not be  material  in the
aggregate.


<PAGE>

<TABLE>
- ------------------------------------------------------------------------------------------------------------------------------
QUARTERLY FINANCIAL SUMMARY - UNAUDITED
Consolidated Daily Average Balances, Average Yields and Rates
(In Thousands Except Share Data)
                                                                         For Three months ended
                                        --------------------------------------------------------------------------------------
                                                        March 31, 1999                            December 31,1998
                                        --------------------------------------------    --------------------------------------
                                             Average         Revenue/      Yield        Average         Revenue/     Yield
                                             Balance         Expense       /Rate        Balance         Expense      /Rate
                                        --------------------------------------------------------------------------------------
<S>                                      <C>             <C>                <C>     <C>             <C>                 <C>  
Assets
  Taxable securities                     $   2,088,998   $    31,212        6.06%   $    1,902,736  $    29,073         6.06%
  Tax-exempt securities(1)                     318,685         6,104        7.77           323,147        6,167         7.57
- ------------------------------------------------------------------------------------------------------------------------------
    Total securities                         2,407,683        37,316        6.29         2,225,883       35,240         6.28
- ------------------------------------------------------------------------------------------------------------------------------
  Trading securities                            54,907           696        5.14            19,415          232         4.74
  Funds sold                                    14,365           178        5.03            16,539          242         5.81
  Loans(2)(3)                                3,523,454        70,651        8.13         3,270,560       69,158         8.39
    Less reserve for loan losses                66,426                                      63,727                     -
                                                                                                              -
- ------------------------------------------------------------------------------------------------------------------------------
  Loans, net of reserve(3)                   3,457,028        70,651        8.29         3,206,833       69,158         8.56
- ------------------------------------------------------------------------------------------------------------------------------
    Total earning assets(3)                  5,933,983       108,841        7.44         5,468,670      104,872         7.61
- ------------------------------------------------------------------------------------------------------------------------------
  Cash and other assets                        816,196                                     672,352
- ------------------------------------------------------------------------------------------------------------------------------
        Total assets                     $   6,750,179                              $    6,141,022
- ------------------------------------------------------------------------------------------------------------------------------

Liabilities And Shareholders' Equity

  Transaction deposits                   $   1,401,655        10,131        2.93%   $    1,236,386        8,967         2.88%
  Savings deposits                             148,393           688        1.88           119,970          607         2.01
  Other time deposits                        1,730,964        21,681        5.08         1,601,350       21,264         5.27
- ------------------------------------------------------------------------------------------------------------------------------
     Total interest-bearing deposits         3,281,012        32,500        4.02         2,957,706       30,838         4.14
- ------------------------------------------------------------------------------------------------------------------------------
  Other borrowings                           1,714,762        21,762        5.15         1,502,825       20,427         5.39
  Subordinated debenture                       148,482         2,348        6.41           147,418        2,333        6.28
- ------------------------------------------------------------------------------------------------------------------------------
     Total interest-bearing liabilities      5,144,256        56,610        4.46         4,607,949       53,598         4.61
- ------------------------------------------------------------------------------------------------------------------------------
  Demand deposits                            1,010,574                                     950,560
  Other liabilities                             85,070                                      85,721
  Shareholders' equity                         510,279                                     496,792
- ------------------------------------------------------------------------------------------------------------------------------
  Total liabilities and shareholders'    $   6,750,179                              $    6,141,022
Equity
- ------------------------------------------------------------------------------------------------------------------------------
  Tax-Equivalent Net Interest Revenue (1)(3)                  52,231        2.98%                        51,274         2.99%
  Tax-Equivalent Net Interest  Revenue (1)

     To Earning Assets                                                      3.57                                       3.72
   Less tax-equivalent adjustment                              2,333                                      2,299
(1)(3)
- ------------------------------------------------------------------------------------------------------------------------------
Net Interest Revenue                                          49,898                                     48,975
Provision for loan losses                                      3,370                                      4,027
Other operating revenue                                       46,865                                     44,817
Other operating expense                                       63,593                                     60,821
- ------------------------------------------------------------------------------------------------------------------------------
Income Before Taxes                                           29,800                                     28,944
Federal and state income tax                                   9,983                                      9,729
- ------------------------------------------------------------------------------------------------------------------------------
Net Income                                               $    19,817                                $    19,215
- ------------------------------------------------------------------------------------------------------------------------------
Earnings Per Share:
  Net Income
    Basic                                                $      0.43                                $      0.42
- ------------------------------------------------------------------------------------------------------------------------------
    Diluted                                              $      0.38                                $      0.37
- ------------------------------------------------------------------------------------------------------------------------------

<FN>
(1) Tax  equivalent  at the  statutory  federal  and state rates for the periods
presented. The taxable equivalent adjustments shown
        shown are for comparitive purposes.
(2)   The loan averages include loans on which the accrual of interest has been discontinued and are stated net of unearned
      income.
(3)   Yield/Rate excludes $1.8 million and $1.5 million of non-recurring collection of foregone interest in September 30,
     1998 and June 30, 1998, respectively.
</FN>
</TABLE>


<PAGE>

<TABLE>
- -------------------------------------------------------------------------------------------------------------------------
                                          For Three months ended
- -------------------------------------------------------------------------------------------------------------------------
             September 30, 1998                        June 30, 1998                           March 31, 1998
- -------------------------------------------------------------------------------------------------------------------------
      Average      Revenue/     Yield        Average        Revenue/     Yield        Average      Revenue/     Yield
      Balance       Expense     /Rate        Balance         Expense     /Rate        Balance       Expense     /Rate
- -------------------------------------------------------------------------------------------------------------------------

<C>             <C>               <C>    <C>             <C>                <C>   <C>                <C>          <C>  
  $    1,751,428$    27,300       6.18%  $    1,642,799  $    25,119        6.13% $    1,772,971$    27,235       6.23%
         325,413      6,212        7.57         321,703        6,173        7.70         328,735      6,248        7.71
- -------------------------------------------------------------------------------------------------------------------------
       2,076,841     33,512        6.40       1,964,502       31,292        6.39       2,101,706     33,483        6.46
- -------------------------------------------------------------------------------------------------------------------------
          27,389        389        5.63          21,408          262        4.91          11,774        163        5.61
          25,287        333        5.22          37,728          571        6.07          47,050        691        5.96
       2,978,087     66,503        8.62       2,838,037       63,072        8.71       2,822,147     60,737        8.73
          59,821                  -              56,423                  -                54,164                  -
                          -                                        -                                      -
- -------------------------------------------------------------------------------------------------------------------------
       2,918,266     66,503        8.80       2,781,614       63,072        8.88       2,767,983     60,737        8.90
- -------------------------------------------------------------------------------------------------------------------------
       5,047,783    100,737        7.78       4,805,252       95,197        7.82       4,928,513     95,074        7.82
- -------------------------------------------------------------------------------------------------------------------------
         6477413                                643,626                                  625,863
- -------------------------------------------------------------------------------------------------------------------------
  $    5,695,524                         $    5,448,878                           $    5,554,376
- -------------------------------------------------------------------------------------------------------------------------


  $    1,187,685      92737        3.10% $    1,184,835        9,268        3.14% $    1,145,221$     8,917        3.16%
         108,911        547        1.99         111,207          617        2.23         109,560        602        2.23
       1,643,596     22,455        5.42       1,717,993       23,640        5.52       1,739,816     23,864        5.56
- -------------------------------------------------------------------------------------------------------------------------
       2,940,192     32,275        4.36       3,014,035       33,525        4.46       2,994,597     33,383        4.52
- -------------------------------------------------------------------------------------------------------------------------
       1,152,503     16,830        5.79         873,616       12,406        5.70       1,051,724     14,958        5.77
         148,392      2,529       6.76          148,410        2,464       6.66          148,374      2,367       6.47
- -------------------------------------------------------------------------------------------------------------------------
       4,241,087     51,634        4.83       4,036,061       48,395        4.81       4,194,695     50,708        4.90
- -------------------------------------------------------------------------------------------------------------------------
         904,128                                895,415                                  858,340
          78,383                                 61,814                                   57,095
         471,926                                455,588                                  444,246
- -------------------------------------------------------------------------------------------------------------------------
  $    5,695,524                         $    5,448,878                           $    5,554,376
- -------------------------------------------------------------------------------------------------------------------------
                      49,103      2.95%                       46,802        3.01%                     44,366      2.92%
                                             3.05

                                   3.72                                     3.78                                   3.65
                      2,326                                    2,338                                  2,330
- -------------------------------------------------------------------------------------------------------------------------
                     46,777                                   44,464                                 42,036
                      4,001                                    3,953                                  2,470
                     42,860                                   44,355                                 40,787
                     56,837                                   53,804                                 57,193
- -------------------------------------------------------------------------------------------------------------------------
                     28,799                                   10,624                                 23,160
                     10,049                                   10,624                                  6,847
- -------------------------------------------------------------------------------------------------------------------------
                $    18,750                              $    20,438                            $    16,313
- -------------------------------------------------------------------------------------------------------------------------


                $      0.41                              $      0.44                            $      0.35
- -------------------------------------------------------------------------------------------------------------------------
                $      0.36                              $      0.39                            $      0.31
- -------------------------------------------------------------------------------------------------------------------------
</TABLE>


<PAGE>

PART II. Other Information

      Item 6. Exhibits and Reports on Form 8-K

         (A)      Exhibits:

                  No. 10.26   Merger agreement among BOK Financial Corporation, 
                              BOKF Merger Corporation Number Nine, and 
                              Chaparral Bancshares, Inc.dated February 19, 1999.

                  No. 10.27   Merger agreement among BOK Financial Corporation,
                              Park Cities Bancshares, Inc., Mid-Cities 
                              Bancshares, Inc. and Mid-Cities National Bank 
                              dated February 24, 1999.

                  No. 10.28    Merger agreement among BOK Financial Corporation,
                               Park Cities Bancshares, Inc., PC Interim State
                               Bank, Swiss Avenue State Bank and Certain 
                               Shareholders of Swiss Avenue State Bank dated 
                               March 4, 1999.

                  No. 27       Financial Data Schedule filed herewith 
                               electronically.


         (B) Reports on Form 8-K:

            No  reports on Form 8-K were filed  during  the three  months  ended
March 31, 1999.

                                   SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.


                                                     BOK FINANCIAL CORPORATION
                                                     (Registrant)


Date:         May 17, 1999                        /s/ James A. White
              ------------                        -------------------------
                                                  James A. White
                                                  Executive Vice President and
                                                  Chief Financial Officer


                                     INDEX

     Areement and Plan of Merger
     Promissory Note                    Exhibit A
     Escrow Agreement                   Exhibit B
     Employment Agreement               Exhibit C
     Employment Agreement               Exhibit D
     Noncompetition Agreement           Exhibit E
     Escrow Agreement                   Exhibit F



                          AGREEMENT AND PLAN OF MERGER

         This AGREEMENT AND PLAN OF MERGER  ("Agreement"),  dated as of February
19, 1999,  is entered into by and among BOK Financial  Corporation,  an Oklahoma
Corporation,  ("BOKF"), BOKF Merger Corporation Number Nine, a Texas corporation
and a  wholly-owned  subsidiary of BOKF  ("BOKSub"),  and Chaparral  Bancshares,
Inc., a Texas corporation ("Chaparral").

         WHEREAS,  BOKF is a  registered  bank  holding  company  under the Bank
Holding  Company  Act  of  1956,  as  amended  (the  "BHCA"),  and  BOKSub  is a
wholly-owned subsidiary of BOKF; and

         WHEREAS, Chaparral is a registered bank holding company under the BHCA,
which  controls  Canyon  Creek  National  Bank, a national  banking  association
("CCNB"); and

         WHEREAS, Chaparral owns all of the issued and outstanding capital stock
of Chaparral Bancshares of Delaware, a Delaware corporation ("Delaware"); and

         WHEREAS,  Delaware is a registered bank holding company under the BHCA,
which owns all of the issued and outstanding capital stock of CCNB; and

         WHEREAS,  the  respective  Boards  of  Directors  of each  of BOKF  and
Chaparral deem it advisable for BOKSub to merge with and into Chaparral upon the
terms and subject to the conditions described herein;

         NOW,  THEREFORE,  for and in consideration of the mutual benefits to be
derived from this Agreement and of the representations,  warranties, conditions,
and promises  hereinafter  contained,  the parties hereto  covenant and agree as
follows:


                                    ARTICLE I
                                   THE MERGER

         Section 1.1. The Merger.  Pursuant to the terms and  provisions of this
Agreement and the Texas  Business  Corporation  Act (the  "TBCA"),  BOKSub shall
merge with and into Chaparral (the "Merger").

     Section 1.2. Merging  Corporation.  BOKSub shall be the merging corporation
under the Merger and its corporate  identity and  existence,  separate and apart
from Chaparral, shall cease on consummation of the Merger.



     Section  1.3.  Surviving  Corporation.  Chaparral  shall  be the  surviving
corporation in the Merger. No changes in the articles of incorporation or bylaws
of Chaparral  shall be effected by the Merger.  The  officers  and  directors of
Chaparral  after the Merger shall be the same as the  officers and  directors of
Chaparral  as of the  Effective  Time (as  defined  in Section  9.2);  provided,
however,  Stanley A. Lybarger,  Tom E. Turner and C. Fred Ball, Jr. shall,  upon
consummation of the Merger,  be additional  members of the board of directors of
Chaparral.  It is understood that some of the current directors of Chaparral may
elect to resign on or before the Effective Time.

         Section  1.4.  Effect of the Merger.  The Merger  shall have all of the
effects provided by the TBCA. Chaparral,  as the surviving corporation,  may, at
any time after the  Effective  Time,  take any action  (including  executing and
delivering  any  documents)  in the name  and on  behalf  of  either  BOKSub  or
Chaparral  as  are  appropriate  in  order  to  carry  out  and  effectuate  the
transactions contemplated by this Agreement.

         Section 1.5.  Merger Consideration; Conversion of Shares.

         (a) At the Effective  Time,  each share common stock of Chaparral,  par
value $1.00 per share (the  "Chaparral  Common")  then  issued and  outstanding,
other than shares the holders of which have duly  exercised and perfected  their
dissenters'  rights under the TBCA,  shall be  automatically  converted into the
right  to  receive  an  amount  (the  "Merger   Consideration")   equal  to  (i)
$29,900,000,  plus (a) the  difference  (which may be a loss) between the amount
realized by CCNB  (including  principal and interest) upon collection or sale of
any of the CCFC  Assets  (as  defined  in  Section  1.7) and the Book  Value (as
defined in Section  1.7)  thereof,  between the date of this  Agreement  and the
Effective Time, minus (b) 134% of the amount of bonuses paid pursuant to Section
5.2(e) of this  Agreement,  and minus (c) the  amount of any  dividends  paid by
Chaparral to its shareholders during the period from January 1, 1999 to the date
of consummation of the Merger, divided by (ii) the number of shares of Chaparral
Common issued and  outstanding  as of the Effective  Time (and after exercise of
all of the Stock Options (as defined in Section 2.2)). The Merger  Consideration
shall be paid to each holder of the Chaparral Common as of the Effective Time as
herein provided.

         (b) Chaparral,  BOKF and BOKSub acknowledge and understand that (i) all
Stock  Options  shall be  exercised  immediately  prior to  consummation  of the
Merger,  (ii) all shares of Chaparral Common issuable upon exercise of the Stock
Options  shall  be  deemed  issued  and  outstanding  immediately  prior  to the
consummation of the Merger,  and (iii) the Chaparral Common to be converted into
the right to receive the Merger Consideration shall include, without limitation,
the Chaparral Common to be issued upon the exercise of the Stock Options.



<PAGE>


         (c) At the Effective Time, BOKF shall deposit or cause to be deposited,
each into an interest-bearing  account, (i) $400,000 of the Merger Consideration
to be governed by Section 11.2 (the "Representation  Escrow Funds"), and (ii) an
amount,  if any, equal to the aggregate Tax Basis (as defined in Section 1.7) of
the CCFC  Assets  owned  by CCNB as of the  Effective  Time  (the  "CCFC  Escrow
Funds"). The Merger  Consideration less the Representation  Escrow Funds and the
CCFC Escrow  Funds is referred to herein as the "Closing  Consideration").  Each
holder of the Chaparral Common may elect to receive the Closing Consideration in
any  combination  of (i) cash or (ii) a single  Promissory  Note  payable to the
shareholder by BOKF ("BOKF Note").  Each BOKF Note shall (i) be substantially in
the form  attached  hereto as Exhibit A (the "BOKF  Note" and  collectively  the
"BOKF Notes"); (ii) bear interest at the rate per annum equal to the "Applicable
Federal  Rate" as defined  under the Internal  Revenue Code of 1986,  as amended
(the "Code"), based upon the term of such BOKF Note, (iii) be due and payable in
full on January 2, 2000.

         (d)  Unless a  Chaparral  shareholder  (including  holders of the Stock
Options)  shall deliver to Chaparral not later than the meeting of  shareholders
of Chaparral at which the shareholders  vote on the question of approval of this
Agreement  a written  election  ("BOKF  Note  Election")  in a form  approved by
counsel to BOKF (which approval shall not be  unreasonably  withheld or delayed)
to receive the Closing Consideration or part thereof in the form of a BOKF Note,
the  shareholder  shall be  irrevocably  deemed to have  elected to receive  the
Closing  Consideration  in all cash.  Any Chaparral  shareholder  who has timely
delivered  the BOKF Note Election may withdraw  such  election,  and receive the
Closing  Consideration in all cash, by delivering written notice to Chaparral to
that effect not less than twenty (20) days prior to the Closing Date (as defined
in Section 9.2).

         (e) At the Effective  Time, all of the shares of Chaparral  Common,  by
virtue of the Merger and without any action on the part of the holders  thereof,
shall no longer be outstanding and shall be canceled and retired and shall cease
to exist, and each holder of any certificate or certificates  which  immediately
prior to the Effective Time represented  outstanding  shares of Chaparral Common
(the "Certificates") or of any holder of Stock Options shall thereafter cease to
have any rights with respect to such shares, except the right of such holders to
receive the Closing  Consideration  upon the  surrender of such  Certificate  or
Certificates or exercise of such Stock Options in accordance with Section 1.6.

         (f) At the Effective Time, each share of Chaparral Common, if any, held
in the treasury of Chaparral  immediately  prior to the Effective  Time shall be
canceled.

         (g) At the Effective Time, each share of common stock, par value $ 1.00
per share, of BOKSub  outstanding  immediately prior to the Effective Time shall
be converted into one share of Chaparral Common.

         (h) If any holder of  Chaparral  Common is entitled to dissent from the
Agreement  and the Merger under the TBCA and such holder  thereof  perfects such
holder's  rights under the TBCA in accordance with the provisions  thereof,  any
issued and outstanding shares of Chaparral Common held by such dissenting holder
("Dissenting  Shares")  shall not be  converted as described in this Section 1.5
but from and after the Effective Time shall  represent only the right to receive
such cash consideration as may be determined to be due to such dissenting holder
pursuant to the TBCA;  provided,  however,  that each share of Chaparral  Common
outstanding  immediately  prior to the  Effective  Time and held by a dissenting
holder who shall, after the Effective Time, withdraw his demand for appraisal or
lose his right of appraisal  shall have only such rights as are  provided  under
the TBCA.

         Section 1.6.  Exchange Procedures; Surrender of Certificates.



<PAGE>


         (a) The Bank of New York,  or other  entity  mutually  satisfactory  to
Chaparral  and BOKF,  shall  act as  paying  agent in the  Merger  (the  "Paying
Agent"). Immediately after the Effective Time, BOKF will cause Chaparral, as the
surviving  corporation,  to furnish the Paying Agent a corpus consisting of cash
and BOKF Notes  sufficient  in the  aggregate  for the Paying Agent to make full
payment of the Closing Consideration to the holders of all outstanding shares of
Chaparral Common (other than Dissenting Shares).

         (b) At least twenty (20) days prior to the Effective  Time,  the Paying
Agent shall mail,  without any further  action on the part of BOKF or Chaparral,
to each record holder of the Certificates, addressed to the most current address
of such  shareholders  according  to the  records  of  Chaparral,  a  letter  of
transmittal  (and  instructions)  for  use in  effecting  the  surrender  of the
Certificates  in exchange  for the Merger  Consideration.  Each such letter (the
"Merger Transmittal Letter") shall specify that delivery shall be effected,  and
risk of loss and title to the Certificates shall pass, only upon proper delivery
of the  Certificates to the Paying Agent and shall be in such form and have such
other  provisions as BOKF may reasonably  specify.  If a holder of the Chaparral
Common  surrenders  the  Certificates  representing  shares of such  stock and a
properly executed Merger  Transmittal  Letter to the Paying Agent at least three
(3)  business  days prior to the Closing  Date,  then on the Closing  Date,  the
Paying  Agent  shall pay to such  shareholder  the  Closing  Consideration  with
respect to such shares of Chaparral  Common. If a holder of the Chaparral Common
surrenders  the  Certificates  representing  shares of such stock and a properly
executed Merger  Transmittal  Letter to the Paying Agent at any time after three
(3) business  days prior to the Closing  Date,  then  promptly,  and in no event
later than three (3) business days after receipt of such Certificates and Merger
Transmittal  Letter,  the Paying Agent shall pay to such shareholder the Closing
Consideration  with respect to such shares of Chaparral  Common.  No interest on
the Closing Consideration  issuable upon the surrender of the Certificates shall
be paid or accrued  for the benefit of holders of  Certificates  (other than any
interest  on the BOKF  Notes in  accordance  with  their  terms).  If the Merger
Consideration  is to be issued to a person  other  than a person in whose name a
surrendered Certificate is registered,  it shall be a condition of issuance that
the surrendered  Certificate shall be properly endorsed or otherwise executed in
proper form for transfer and that the person  requesting such issuance shall pay
to the Paying  Agent any  required  transfer or other taxes or  establish to the
satisfaction  of the  Paying  Agent  that  such  tax  has  been  paid  or is not
applicable.

         (c) With respect to any shares of Chaparral Common that are acquired as
a result of the  exercise  of the Stock  Options,  the  purchase  price for such
shares under the Stock Options shall be subtracted  from or  "netted-out" of the
Merger  Consideration  to be paid such  shareholders  in order to provide  for a
cashless exercise of the Stock Options.  That is, upon the exercise of the Stock
Options such option  holder shall not be required to pay  Chaparral the purchase
price specified in the Stock Options, but such amount shall be deducted from the
amount of  Merger  Consideration  that  would  otherwise  have been paid to such
option holder.

         (d) After the Effective Time, there shall be no further registration or
transfers  on the records of  Chaparral  of  outstanding  certificates  formerly
representing  shares  of  Chaparral  Common  and,  if  a  certificate   formerly
representing  such  shares  is  presented  to  Chaparral  or  BOKF,  it shall be
forwarded  to the Paying  Agent for  cancellation  and  exchange  for the Merger
Consideration.



<PAGE>


         (e) All  Merger  Consideration  paid upon the  surrender  of  Chaparral
Common in accordance with the above terms and conditions shall be deemed to have
been  paid in full  satisfaction  of all  rights  pertaining  to such  shares of
Chaparral Common.

         (f) In the event any certificate  for Chaparral  Common shall have been
lost,  stolen or  destroyed,  the Paying  Agent shall issue in exchange for such
lost,  stolen or  destroyed  certificate,  such Merger  Consideration  as may be
required pursuant to this Agreement;  provided,  however,  that BOKF may, in its
discretion  and as a condition  precedent to the issuance  thereof,  require the
owner of such lost,  stolen or destroyed  certificate to deliver an affidavit of
lost certificate and indemnification  agreement in form reasonably acceptable to
BOKF.

         (g) At any time  following  six months after the Effective  Time,  BOKF
shall be entitled to terminate  the Paying Agent  relationship,  and  thereafter
holders of  Certificates  shall be  entitled  to look only to BOKF  (subject  to
abandoned  property,  escheat or other similar laws) with respect to the Closing
Consideration payable upon surrender of their Certificates.

         Section 1.7.      The CCFC Escrow and Sale of the CCFC Assets.

         (a) Schedule 1.7 sets forth, as of February 16, 1999, a list of certain
assets of CCNB (the "CCFC  Assets"),  the value of such  assets on the books and
records  of CCNB as of such date (the  "Book  Value")  and the tax basis of such
assets on the books and records of CCNB as of such date (the "Tax Basis").  From
and  after  the  date of  this  Agreement,  Chaparral  shall  cause  CCNB to use
reasonable,  good faith  efforts to collect or sell all of the CCFC Assets prior
to the  Closing  Date for  such  amounts  and at such  times  as  Chaparral  may
determine.  With the consent of BOKF,  which consent  shall not be  unreasonably
withheld,  CCNB may sell  certain  fixed  assets  currently  used by the Bank in
collecting or servicing the CCFC Assets,  or enter into contracts to lease space
or provide data processing services to the purchaser of all or substantially all
of the CCFC Assets.

         (b) If all of the CCFC Assets are not  collected  or sold by CCNB prior
to the Effective Time, prior to the Effective Time,  Chaparral shall incorporate
Canyon Creek Financial  Corporation  ("CCFC") as a Texas  corporation,  with the
shares  of  stock  of  CCFC  to be  issued  in  trust  for  the  benefit  of the
shareholders  of  Chaparral  as of the  Effective  Time  in  proportion  to such
holder's ownership of the stock of Chaparral. The persons who are members of the
Board of Directors of Chaparral  immediately prior to the Closing shall serve as
directors of CCFC.

         (c) If all of the CCFC Assets are not  collected  or sold by CCNB prior
to the Effective  Time, at the Effective  Time,  BOKF shall  establish an escrow
account  (the  "CCFC  Escrow")  with  Bank  of  Texas  Trust  Company,  National
Association (the "Escrow Agent"). The CCFC Escrow shall be governed by an escrow
agreement, the form of which is attached hereto as Exhibit "B" (the "CCFC Escrow
Agreement", which shall provide as follows:

                    (i) At the  Effective  Time,  BOKF  shall  deposit an amount
         equal to the aggregate Tax Basis of the CCFC Assets owned by CCNB as of
         the Effective Time into the CCFC Escrow (the "CCFC Escrow Funds").



<PAGE>


                  (ii) At the Effective Time, CCFC will purchase the CCFC Assets
         from CCNB and CCNB shall sell the CCFC  Assets to CCFC at such place as
         BOKF may  determine for a price equal to the aggregate Tax Basis of the
         CCFC Assets  owned by CCNB as of the  Effective  Time (the "CCFC Assets
         Purchase Price") out of the CCFC Escrow Funds. The CCFC Assets shall be
         sold  by  CCNB to CCFC  without  recourse  and in an "as is"  condition
         without any representations or warranties of any kind, other than title
         to the CCFC  Assets.  The sale and  purchase of the CCFC Assets will be
         effected  by  appropriate  documentation,  which  will be in  form  and
         substance  reasonably  acceptable  to counsel for CCFC and BOKF.  After
         consummation  of the sale and  purchase  of the CCFC  Assets  and after
         payment of the CCFC Assets  Purchase  Price to CCNB,  the Escrow Agent,
         the CCFC Escrow Agreement shall terminate.

                  (iii) BOKF  shall pay the fees and costs of the  Escrow  Agent
with respect to the CCFC Escrow.


                                   ARTICLE II
                   REPRESENTATIONS AND WARRANTIES OF CHAPARRAL

         In order to induce BOKF and BOKSub to enter into, execute,  deliver and
perform this Agreement,  Chaparral represents and warrants to BOKF and BOKSub as
follows:

         Section 2.1.  Organization, Standing and Power.

         (a) Chaparral is a corporation duly organized,  validly existing and in
good standing under laws of the State of Texas.  Chaparral (i) has all requisite
power and authority to own, lease and operate its properties and to carry on its
business as it is now being conducted; (ii) is subject to the supervision of the
Board of Governors  of the Federal  Reserve  System (the "Fed");  and (iii) is a
bank holding company registered with the Fed under the BHCA.

         (b) Delaware is a corporation  duly organized,  validly existing and in
good  standing  under  laws  of the  State  of  Delaware.  Delaware  (i) has all
requisite  power and authority to own,  lease and operate its  properties and to
carry on its  business  as it is now being  conducted;  (ii) is  subject  to the
supervision of the Fed; and (iii) is a bank holding company  registered with the
Fed under the BHCA.

         (c) CCNB is a national  banking  association  duly  organized,  validly
existing and in good standing under laws of the United States.  CCNB (i) has all
requisite  power and authority to own,  lease and operate its  properties and to
carry on its  business  as it is now being  conducted;  (ii) is  subject  to the
supervision of the Federal Deposit Insurance Corporation ("FDIC") and the Office
of the  Comptroller  of the  Currency  ("OCC");  and (iii) is an insured bank as
defined in the Federal Deposit Insurance Act.



<PAGE>


         (d)  Chaparral  has  delivered to BOKF and BOKSub  complete and correct
copies,  as of a date not more than 30 days prior to the date hereof, of (i) the
Articles of Association or Incorporation  and all amendments  thereto,  and (ii)
the Bylaws and all amendments thereto, of each of Chaparral, Delaware and CCNB.

         Section 2.2.  Capital Structure.

         (a) The  authorized  capital  stock of Chaparral  consists of 5,000,000
shares  of Common  Stock,  par value  $1.00  per share and  5,000,000  shares of
preferred  stock,  no par value  per  share.  As of the date of this  Agreement,
1,883,612  shares of Chaparral  Common were  outstanding  (net of shares held by
Chaparral  in  treasury)  and such issued and  outstanding  shares of  Chaparral
Common are held of record by the shareholders in the amounts  specified for each
such  shareholder in Schedule  2.2(a).  Chaparral does not have any  outstanding
shares of  preferred  stock nor any  commitment  or  obligation  to  repurchase,
reacquire or redeem any of the outstanding  Chaparral  Common. As of the date of
this Agreement, Chaparral had outstanding stock options granted, pursuant to the
Chaparral  Employee  Stock Option Plan and the Stock Option Plan for  Directors,
representing  the right to acquire an aggregate  of 136,128  shares of Chaparral
Common  (the  "Stock  Options").  Schedule  2.2 (b) sets  forth the name of each
person that has been  granted  Stock  Options,  the number of shares that may be
acquired as of the date of this  Agreement  by each such person and the exercise
price of such  Stock  Options.  The  Chaparral  Common  is  validly  issued  and
outstanding, fully paid and non-assessable.  Except for the Stock Options, there
are  no  outstanding  subscriptions,  conversion  privileges,  calls,  warrants,
options,  commitments  or agreements of any  character  obligating  Chaparral to
issue, sell, or dispose of any shares of any of its capital stock.

         (b) The  authorized  capital stock of Delaware  consists  solely of 300
shares of common stock, par value $1.00 per share (the "Delaware Common Stock").
As of the date of this  Agreement,  300  shares of  Delaware  Common  Stock were
issued and outstanding, and all of such outstanding shares are held of record by
Chaparral. There are no outstanding subscriptions, conversion privileges, calls,
warrants,  option, commitments or agreements obligating Delaware to issue, sell,
or dispose of any shares of any of its capital stock.

         (c) The authorized  capital stock of CCNB consists of 15,000,000 shares
of common  stock,  par value  $1.00 per share (the  "CCNB  Common  Stock"),  and
10,000,000  shares of preferred stock, par value $1.00 per share. As of the date
of this  Agreement,  1,443,600  shares of CCNB  Common  Stock  were  issued  and
outstanding,  all of  which  are  held  of  record  by  Delaware.  There  are no
outstanding  shares  of  preferred  stock,  nor  any  subscriptions,  conversion
privileges,  calls, warrants, options, commitments or agreements obligating CCNB
to issue, sell, or dispose of any shares of any of its capital stock.



<PAGE>


         Section 2.3.  Authority.  Subject to the approval of this  Agreement by
the  shareholders  of  Chaparral  as  contemplated  by Section 5.6  hereof,  the
execution  and delivery of this  Agreement  and the  consummation  of the Merger
contemplated  hereby  have been duly and  validly  authorized  by all  necessary
corporate action on the part of Chaparral. Neither the execution and delivery of
this  Agreement  nor the  consummation  of the  Merger  contemplated  hereby nor
compliance by Chaparral with any of the provisions hereof will (i) conflict with
or result in a breach of any material provision of its Articles of Incorporation
or Bylaws or  constitute  a default  (or give rise to any right of  termination,
cancellation or acceleration)  under any of the terms,  conditions or provisions
of any material note, bond,  mortgage,  indenture,  license,  agreement or other
instrument or obligation to which Chaparral is a party, or by which it or any of
its  properties  or assets  may be bound,  except for such  conflict,  breach or
default  as to which  requisite  waivers  or  consents  either  shall  have been
obtained by Chaparral by the Effective Time or the obtaining of which shall have
been waived by BOKF,  or (ii)  violate any  material  order,  writ,  injunction,
decree,  statute,  rule or  regulation  applicable  to  Chaparral  or any of its
properties  or  assets.  No  other  consent  or  approval  by  any  governmental
authority,  other than compliance with applicable  federal and state  securities
and banking laws and  regulations of the Fed, is required in connection with the
execution  and delivery by Chaparral of this  Agreement or the  consummation  by
Chaparral of the Merger contemplated hereby.

         Section 2.4.  Financial Statements.

         (a)  Chaparral  has  previously  delivered  or made  available  to BOKF
complete  copies of the (i) audited  consolidated  balance  sheets of Chaparral,
Delaware  and CCNB as of  December  31,  1997 and  related  consolidated  income
statements and statement of changes in shareholders'  equity,  together with the
notes thereto; (ii) unaudited consolidated balance sheet of Chaparral,  Delaware
and CCNB as of December 31, 1998 and the related unaudited  consolidated  income
statement for the twelve  months then ended;  and (iii) the Reports of Condition
and  Income  of CCNB as filed  with the OCC for  each of the  quarterly  periods
during 1998 (collectively the "Financial Statements").

         (b) The  information  set forth in the  Financial  Statements  presents
fairly the financial  position of  Chaparral,  Delaware and CCNB as of the dates
thereof and the results of their  operations and the changes in their  financial
position  for the  periods  indicated  in  conformity  with  generally  accepted
accounting  principles  applied  on  a  consistent  basis,  except  the  interim
statements are subject to normal year-end adjustments. Such Financial Statements
do not, as of the dates  thereof,  include any material  assets or omit to state
any  material  liabilities,  absolute  or  contingent,  or include or omit other
facts, the inclusion or omission of which renders such Financial Statements,  in
light of the  circumstances  under  which  they  were  made,  misleading  in any
material  respect;  provided,  however,  the interim  statements  are subject to
normal year-end adjustments.



<PAGE>


         Section 2.5. Absence of Changes. Since December 31, 1998, there has not
been any material  adverse  change in the condition  (financial or otherwise) of
the assets,  liabilities,  earnings or business of Chaparral,  Delaware or CCNB.
Since such date, the business of Chaparral, Delaware and CCNB has been conducted
only in the ordinary  course  consistent  with prior practices and such entities
have not incurred any additional material  liabilities (not already reflected in
the Financial  Statements)  except: (i) those incurred in the ordinary course of
business   consistent  with  past  practices   without   negligence  or  willful
malfeasance,  or (ii) expenses or liabilities  incurred in connection  with this
Agreement  and  the  transactions  contemplated  hereby.  Without  limiting  the
generality of the  foregoing,  since  December 31, 1998,  except as permitted by
this Agreement,  none of Chaparral,  Delaware,  or CCNB have paid any dividends,
made any  distributions of assets,  made any material changes in compensation or
benefits  of any  employee  (other  than by reason  of  promotion  to  increased
responsibility),  or entered into any contracts for services or materials except
such contracts and materials which either: (i) may be terminated without penalty
within 90 days or, (ii)  provide for the  payment or other  consideration  to be
furnished by Chaparral,  Delaware or CCNB in an amount of not more than $25,000,
individually  or $100,000 for all such contracts and materials.  Notwithstanding
the  foregoing,  any  changes in banking  laws,  generally  accepted  accounting
principles,  prevailing  interest rates or other  developments  which affect the
entire banking industry generally shall not be deemed to have a material adverse
effect in the financial condition,  the results of operations or the business of
Chaparral, Delaware or CCNB.

         Section 2.6.  Tax Matters.

         (a) Chaparral,  Delaware and CCNB have timely filed all federal,  state
and local (and, if applicable,  foreign) income,  franchise,  bank, excise, real
property, personal property and other tax returns required by applicable laws to
be filed by them (including,  without limitation,  estimated tax returns, income
tax returns, information returns and withholding and employment tax returns) and
have paid,  or where  payment is not required to have been made,  have set up an
adequate  reserve or accrual for the  payment of, all taxes  required to be paid
with respect of the periods  covered by such  returns  and, as of the  Effective
Time,  will have paid, or where payment is not required to have been made,  will
have set up an adequate reserve or accrual for the payment of, all taxes for any
subsequent  periods ending on or prior to the Effective Time. None of Chaparral,
Delaware nor CCNB will have any material  liability for any such taxes in excess
of the amounts so paid or reserves or accruals so established. No payment of any
amount  to any  employee  of any of  Chaparral,  Delaware,  or CCNB is an excess
parachute payment within the meaning of Section 280G of the Code.

         (b) All federal, state and local income, franchise,  bank, excise, real
property,  personal property and other tax returns filed by Chaparral,  Delaware
and CCNB are complete and accurate in all material respects.  None of Chaparral,
Delaware  nor  CCNB is  delinquent  in the  payment  of any tax,  assessment  or
governmental charge, and none of them has requested any extension of time within
which to file any tax returns in respect of any fiscal  year or portion  thereof
which have not since been filed.  There are  currently no  agreements  in effect
with respect to Chaparral,  Delaware or CCNB to extend the period of limitations
for the  assessment or  collection of any tax. As of the date hereof,  no audit,
examination or deficiency or refund  litigation  with respect to any such return
is pending or, to Chaparral's knowledge, threatened.

         Section 2.7.  Property.  Chaparral,  Delaware and CCNB own all property
reflected on the balance sheet dated December 31, 1998 included in the Financial
Statements  (except  personal  property  sold or  otherwise  disposed  of  since
December 31, 1998, in the ordinary  course of  business),  free and clear of all
mortgages,  liens,  pledges,  charges or encumbrances of any nature  whatsoever,
except those reflected in the Financial Statements,  liens for current taxes not
yet due and payable and such encumbrances and imperfections of title, if any, as
are not substantial in character or amount or do not otherwise materially impair
business operations.



<PAGE>


         Section  2.8.   Legal   Proceedings.   There  is  no  material   legal,
administrative,  arbitration or other  proceeding or governmental  investigation
pending or, to  Chaparral's  knowledge,  threatened  which might  reasonably  be
expected to result in material money damages  payable by Chaparral,  Delaware or
CCNB in  excess of  insurance  coverage  or in a  permanent  injunction  against
Chaparral,  Delaware  or CCNB.  To  Chaparral's  knowledge,  each of  Chaparral,
Delaware  and CCNB have  complied  with,  and are not in default in any material
respect  under,  any  laws,  ordinances,  requirements,  regulations  or  orders
applicable to their business. None of Chaparral,  Delaware or CCNB is a party to
any  agreement  or  instrument  or  subject to any  charter  or other  corporate
restriction  or  any  judgment,   order,  writ,  injunction,  or  decree,  which
materially and adversely affects, or might reasonably be expected materially and
adversely to affect, the business operations,  properties,  assets or condition,
financial or otherwise, of Chaparral, Delaware or CCNB.

         Section 2.9. Brokers and Finders.  None of Chaparral,  its subsidiaries
or any of its officers, directors or employees has employed any broker or finder
or incurred any liability for any brokerage  fees,  commissions or finders' fees
in connection with the Merger contemplated herein.

         Section 2.10.  Loan  Portfolio.  Except as to any breach that would not
have a  material  adverse  effect  on the  consolidated  financial  position  of
Chaparral, Delaware and CCNB, (i) all loans and discounts shown on the Financial
Statements  at December 31, 1998 or which were  entered into after  December 31,
1998, but before the Closing Date were and will be made in all material respects
for good, valuable and adequate consideration in the ordinary course of CCNB, in
accordance in all material  respects with sound banking  practices,  and are not
subject to any material  known  defenses,  setoffs or  counterclaims,  including
without  limitation  any such as are afforded by usury or truth in lending laws,
except as may be  provided  by  bankruptcy,  insolvency  or  similar  laws or by
general principles of equity;  (ii) the notes or other evidences of indebtedness
evidencing such loans and all forms of pledges,  mortgages and other  collateral
documents  and security  agreements  are and will be, in all material  respects,
enforceable,  valid,  true and  genuine  and what they  purport to be; and (iii)
Chaparral,  Delaware  and CCNB have  complied and will prior to the Closing Date
comply with all laws and  regulations  relating to such loans,  or to the extent
there has not been such  compliance,  such failure to comply will not materially
interfere with the collection of any such loan.  Notwithstanding  the foregoing,
BOKF  acknowledges  and agrees that it has made its own  determination as to the
collectibility of the loan portfolio of Chaparral and CCNB.



<PAGE>


     Section 2.11.  Environmental.  To  Chaparral's  knowledge,  the  ownership,
location,  construction,  use and operation of all real property owned or leased
by  Chaparral  or CCNB (fixed  asset or OREO) is, and has at all times been,  in
material compliance with applicable  Environmental Law, as hereinafter  defined.
Delaware  does  not own or  lease  any  real  property  and has  not  since  its
incorporation. To Chaparral's knowledge, there are no pending or threatened, and
there  have been no  administrative,  regulatory  or  judicial  actions,  suits,
demands,  demand letters,  claims, liens, notices of noncompliance or violation,
investigations  or  proceedings  relating  in any way to any  Environmental  Law
relating  to the real  property  owned by  Chaparral  or  CCNB.  To  Chaparral's
knowledge,  (i) no real property owned by Chaparral or CCNB has at any time been
used by Chaparral or CCNB, or by any person, as a landfill or for the storage or
disposal, or as a site of spilling,  dumping,  depositing or otherwise disposing
of, any hazardous or toxic  substances or waste; and (ii) no real property owned
by Chaparral or CCNB is, or has been,  an industrial  site or landfill.  For the
purposes hereof,  "Environmental Law" means any federal, state or local statute,
law,  rule,  regulation,  ordinance,  code,  policy or rule of common law now in
effect  and  in  each  case  as  amended  and  any  judicial  or  administrative
interpretation thereof, including any judicial or administrative order, consent,
decree or judgment,  relating to the environment,  health,  safety or "hazardous
materials,"   "hazardous   wastes,"  "toxic   substances,"  "toxic  pollutants,"
"contaminants,"  or words  or  terms of  similar  import  (including  under  any
Environmental Law), including without limitation the Comprehensive Environmental
Response,  Compensation and Liability Act of 1980, as amended, 42 U.S.C. 9601 et
seq., the Hazardous Materials  Transportation Act, as amended, 49 U.S.C. 1801 et
seq., the Resource  Conservation and Recovery Act, as amended, 42 U.S.C. 6901 et
seq., the Federal Water  Pollution  Control Act, as amended,  33 U.S.C.  1251 et
seq., the Toxic  Substances  Control Act, 15 U.S.C.  2601 et seq., the Clean Air
Act, 42 U.S.C.  7401 et seq.,  the Safe  Drinking  Water Act, 42 U.S.C.  3808 et
seq.,  the Texas Solid Waste  Disposal Act,  Tex.  Health & Safety Code Ann. Ch.
361, the Texas Clean Air Act, Tex.  Health & Safety Code Ann. Ch. 382, the Texas
Water Code,  Tex.  Water Code Ann.,  and the Texas  Hazardous  Substances  Spill
Prevention and Control Act, Tex. Water Code Ann.

         Section 2.12.  Zoning and Related Laws. To Chaparral's  knowledge,  all
real property owned or leased by Chaparral or CCNB and the use thereof  complies
with all  applicable  laws,  ordinances,  regulations,  orders or  requirements,
including without limitation,  building, zoning and other laws, except as to any
violations  which  would not have a  material  adverse  affect on the  financial
condition of Chaparral or CCNB.

         Section 2.13.  Compliance with Law.  Chaparral,  Delaware and CCNB have
all licenses, franchises, permits and other governmental authorizations that are
legally  required to enable them to conduct their  respective  businesses in all
material respects and are in compliance with all applicable laws and regulations
except to the extent  that the  failure  to so comply  could not have a material
adverse effect on Chaparral, Delaware or CCNB.

         Section 2.14.  Agreements with Regulatory Agencies.  None of Chaparral,
Delaware nor CCNB is subject to any  cease-and-desist  or other order issued by,
or a party to any written agreement or memorandum of understanding  with or is a
party to any commitment  letter or similar  undertaking to, or is subject to any
order or directive,  or is a recipient of any extraordinary  supervisory  letter
from, or has adopted any board resolutions at the request of (each a "Regulatory
Agreement") any regulatory  agency that materially  restricts the conduct of its
business  or that in any manner  relates  to its  capital  adequacy,  its credit
policies, its management or its business,  nor have Chaparral,  Delaware or CCNB
been  advised  by any  regulatory  agency  that  it is  considering  issuing  or
requesting any Regulatory Agreement.



<PAGE>


         Section 2.15. Employees.  Except as set forth in Schedule 2.15 attached
hereto,  (i) none of the employees of Chaparral,  Delaware,  or CCNB is employed
under any  employment  contract  (oral or written) which will survive the Merger
and (ii) none of Chaparral, Delaware, or CCNB have any employee benefit plans.

         Section 2.16.  Contracts and  Commitments.  A list of all contracts and
commitments,  other than deposit, safe deposit,  credit and lending transactions
entered  into in the  ordinary  course of  CCNB's  banking  business,  which are
material to the  business,  operations,  or financial  condition  of  Chaparral,
Delaware, or CCNB as of this date is set forth in Schedule 2.16. For the purpose
of Schedule 2.16,  materiality  shall mean those  contracts and  commitments for
which payment or other consideration to be furnished by Chaparral,  Delaware, or
CCNB is more than $25,000.  Chaparral,  Delaware, and CCNB have performed in all
material  respects  and  are  performing  all  material  contractual  and  other
obligations required to be performed by them.


                                   ARTICLE III
                     REPRESENTATIONS AND WARRANTIES OF BOKF

         In order to  induce  Chaparral  to enter  into,  execute,  deliver  and
perform this Agreement, BOKF represents and warrants to Chaparral as follows:

         Section 3.1.  Organization,  Standing and Power.  BOKF is a corporation
duly  organized,  validly  existing  and in good  standing  under  the  State of
Oklahoma.  BOKF (i) has all requisite power and authority to execute and deliver
this Agreement and to perform its obligations  hereunder,  and to own, lease and
operate its properties and to carry on its business as now being conducted;  and
(ii) is a bank holding company registered with the Fed under the BHCA.



<PAGE>


         Section 3.2.  Authority.  The execution and delivery of this Agreement,
the  consummation  of  the  Merger  and  payment  of  the  Merger  Consideration
(including  issuance and delivery of the BOKF Notes) and the other  transactions
contemplated  hereby  have been duly and  validly  authorized  by all  necessary
corporate  action on the part of BOKF.  This Agreement has been duly executed by
BOKF and  constitutes the valid and binding  obligation of BOKF,  enforceable in
accordance  with its  terms and  conditions,  except  as  enforceability  may be
limited by bankruptcy, conservatorship,  insolvency, moratorium, reorganization,
receivership  or similar laws and  judicial  decisions  affecting  the rights of
creditors  generally and by general  principles of equity (whether  applied in a
proceeding  at law or in equity).  Neither the  execution  and  delivery of this
Agreement  nor  the  consummation  of the  Merger  and  payment  of  the  Merger
Consideration  (including issuance and delivery of the BOKF Notes) and the other
transactions  contemplated  hereby  nor  compliance  by  BOKF  with  any  of the
provisions  hereof will (i) conflict with or result in a breach of any provision
of its Articles of Incorporation or Bylaws or constitute a default (or give rise
to any right of  termination,  cancellation  or  acceleration)  under any of the
terms, conditions or provisions of any note, bond, mortgage, indenture, license,
agreement or other  instrument  or  obligation  to which BOKF is a party,  or by
which  it or any of its  properties  or  assets  may be  bound  except  for such
conflict,  breach or default as to which  requisite  waivers or consents  either
shall have been  obtained by BOKF by the  Effective  Time,  or the  obtaining of
which  shall have been waived by  Chaparral,  or (ii)  violate any order,  writ,
injunction, decree, statute, rule or regulation applicable to BOKF or any of its
properties  or assets.  No consent or  approval by any  governmental  authority,
other than compliance with applicable  federal and state  securities and banking
laws and  regulations  of the Fed, is required in connection  with the execution
and delivery by BOKF of this Agreement or the consummation by BOKF of the Merger
and payment of the Merger Consideration  (including issuance and delivery of the
BOKF Notes) and the other transactions contemplated hereby.

         Section  3.3.  Subsidiaries.   Each  of  BOKF's  subsidiaries  is  duly
organized,  validly  existing  and  in  good  standing  under  the  laws  of the
jurisdiction  of its  incorporation  and  has  the  corporate  power  to own its
respective  properties and assets,  to incur its respective  liabilities  and to
carry on its respective business as now being conducted.

         Section 3.4. Financial Information.  The consolidated balance sheets of
BOKF and its  subsidiaries  as of December  31,  1997 and  related  consolidated
statements  of income,  changes in  stockholders'  equity and cash flows for the
three years ended December 31, 1997,  together with the notes thereto,  included
in BOKF's 10-K for the year ended 1997, as currently on file with the Securities
and Exchange Commission ("SEC") and the unaudited  consolidated balance sheet of
BOKF and its  subsidiaries  as of September 30, 1998, and the related  unaudited
consolidated income statement and statements of changes in stockholders'  equity
and cash flows for the nine  months  then  ended  included  in BOKF's  Quarterly
Report on Form 10-Q for the quarter  then ended,  as  currently on file with the
SEC (together the "BOKF Financial Statements"), have been prepared in accordance
with generally  accepted  accounting  principles  applied on a consistent  basis
(except as disclosed  therein)  and fairly  present the  consolidated  financial
position and the  consolidated  results of operations,  changes in stockholders'
equity and cash flows of BOKF and its consolidated  subsidiaries as of the dates
and for the  periods  indicated  (subject,  in the  case  of  interim  financial
statements,  to normal  recurring  year-end  adjustments,  none of which will be
material).

         Section 3.5.  Absence of Changes.  Since September 30, 1998,  there has
not been any material adverse change in the financial condition,  the results of
operations or the business of BOKF and its  subsidiaries  taken as a whole,  nor
have there been any events or transactions having such a material adverse effect
which  should be disclosed in order to make the BOKF  Financial  Statements  not
misleading.   Notwithstanding  the  foregoing,  any  changes  in  banking  laws,
generally accepted  accounting  principles,  prevailing  interest rates or other
developments  which affect the entire banking  industry  generally  shall not be
deemed to be a material adverse change in the financial  condition,  the results
of operations or the business of BOKF and its subsidiaries taken as a whole.

         Section  3.6.  Litigation.  There  is no  litigation,  claim  or  other
proceeding pending or, to the knowledge of BOKF, threatened, against BOKF or any
of its subsidiaries, of which the property of BOKF or any of its subsidiaries is
or would be subject which if adversely  determined would have a material adverse
effect on the business of BOKF and its subsidiaries taken as a whole.



<PAGE>


         Section  3.7.   Reports.   Since  January  1,  1993  (in  the  case  of
subsidiaries  of BOKF, the date of  acquisition  thereof by BOKF, if later) BOKF
and each of its significant  subsidiaries  has filed all reports and statements,
together with any amendments  required to be made with respect thereto,  that it
was  required to file with (i) the SEC,  (ii) the Fed,  (iii) the OCC,  (iv) the
FDIC, (v) any applicably  state securities or banking  authorities,  (vi) NASDAQ
and (vii) any other governmental authority with jurisdiction over BOKF or any of
its significant subsidiaries. As of their respective dates, each of such reports
and  documents,  as amended,  including the financial  statements,  exhibits and
schedules thereto, complied in all material respects with the relevant statutes,
rules and regulations  enforced or promulgated by the regulatory  authority with
which they were filed,  and did not contain any untrue  statement  of a material
fact or omit to state  any  material  fact  required  to be  stated  therein  or
necessary in order to make the statements therein, in light of the circumstances
under which they were made, not misleading.

         Section 3.8. Compliance With Law. BOKF and its significant subsidiaries
have all licenses,  franchises,  permits and other  governmental  authorizations
that are legally required to enable them to conduct their respective  businesses
in all material  respects and are in  compliance  with all  applicable  laws and
regulations, except to the extent that the failure to so comply would not have a
material adverse effect on BOKF and its subsidiaries taken as a whole.

         Section  3.9.  Regulatory  Approvals.  BOKF is not aware of any  matter
(including,  but not limited to,  compliance  with capital  adequacy  guidelines
adopted  by the Fed,  the  Community  Reinvestment  Act,  and FFIEC  Interagency
guidelines  establishing  year 2000  standards) that would delay or prevent BOKF
from obtaining all requisite  regulatory  approvals  necessary to consummate the
Merger as set forth in this Agreement.

         Section  3.10.  BOKF Notes.  The BOKF Notes when  issued and  delivered
pursuant to the terms of this  Agreement,  will constitute the valid and binding
obligations  of BOKF  enforceable  in  accordance  with their  terms,  except as
enforcement may be limited by applicable bankruptcy, reorganization, insolvency,
moratorium, or similar laws affecting the enforcement of creditors' rights.

         Section  3.11  Ability  to Pay  Merger  Consideration.  BOKF  will have
available  to  it  as  of  the  Closing  Date,  as  a  result  of  dividends  or
distributions  from its  subsidiaries  or  borrowings  on its  existing  line of
credit,  sufficient cash to pay the Merger Consideration as set forth in Section
1.5 to the shareholders of Chaparral.


                                   ARTICLE IV
                    REPRESENTATIONS AND WARRANTIES OF BOKSUB

         In order to  induce  Chaparral  to enter  into,  execute,  deliver  and
perform this Agreement, BOKSub represents and warrants to Chaparral as follows:

         Section 4.1. Organization,  Standing and Power. BOKSub is a corporation
duly  organized,  validly  existing and in good  standing  under the laws of the
State of Texas, with all requisite power and authority to own, lease and operate
its properties and to carry on its business as now being conducted.


<PAGE>


         Section 4.2.  Authority.  The execution and delivery of this  Agreement
and the  consummation  of the  Merger  contemplated  hereby  have  been duly and
validly  authorized  by all  necessary  corporate  action on the part of BOKSub.
Neither the execution and delivery of this  Agreement,  the  consummation of the
Merger  contemplated  hereby  nor  the  compliance  by  BOKSub  with  any of the
provisions  hereof will (i) conflict with or result in a breach of any provision
of its Articles of Incorporation or Bylaws or constitute a default (or give rise
to any right of  termination,  cancellation  or  acceleration)  under any of the
terms, conditions or provisions of any note, bond, mortgage, indenture, license,
agreement or other  instrument or  obligation to which BOKSub is a party,  or by
which  it or any of its  properties  or  assets  may be  bound  except  for such
conflict,  breach or default as to which  requisite  waivers or consents  either
shall have been  obtained by BOKSub by the  Effective  Time, or the obtaining of
which  shall  have been  waived by BOKSub,  or (ii)  violate  any  order,  writ,
injunction,  decree,  statute, rule or regulation applicable to BOKSub or any of
its properties or assets. No consent or approval by any governmental  authority,
other than those required by applicable federal and state securities and banking
laws and  regulations is required in connection  with the execution and delivery
by BOKSub of this Agreement.


                                    ARTICLE V
                              PRE-CLOSING COVENANTS

         Section 5.1.  Access to Records and Properties of Chaparral.

         (a)  Between  the  date  of this  Agreement  and  the  Effective  Time,
Chaparral  agrees  to give  BOKF  reasonable  access  to all of its  and  CCNB's
premises, books, records (including tax returns filed and those in preparation),
financial  information  and  other  information  pertinent  to  its  operations,
including,  without limitation,  access to independent  auditors with respect to
the  preparation  of the financial  statements and tax planning of Chaparral and
CCNB; provided,  however, that any such investigation shall be conducted in such
manner as not to interfere  unreasonably  with the  operation of the business of
Chaparral or CCNB.  Chaparral will cooperate  fully in permitting BOKF to make a
full  investigation  of  the  business,  properties,   financial  condition  and
investments  of Chaparral  and CCNB,  in the  preparation  of all  applications,
reports  and  other   documents   necessary  or  advisable  for  the  successful
consummation of the Merger.



<PAGE>


         (b) BOKF will treat and hold  confidential  any information  concerning
the business and affairs of  Chaparral,  Delaware or CCNB that is not  generally
available to the public  ("Confidential  Information")  it receives  from any of
Chaparral, Delaware, CCNB, or their respective shareholders, officers, directors
or agents, in the course of its review of Chaparral, Delaware or CCNB. BOKF will
not use any of the  Confidential  Information  except  in  connection  with this
Agreement.  If this Agreement is terminated for any reason whatsoever,  BOKF and
BOKSub will promptly return to Chaparral,  Delaware or CCNB, as the case may be,
all tangible embodiments (and all copies) of the Confidential  Information which
are in its possession, and will not at any time use any Confidential Information
for any  business  purpose or disclose it to any third  party.  Any  information
provided  to BOKF by  Chaparral,  Delaware  or CCNB  shall  not be  deemed to be
Confidential  Information  if: (i) it was in BOKF's lawful  possession or within
BOKF's knowledge at the time of disclosure;  (ii) at the time of disclosure,  it
was in the public  domain;  (iii)  after  Chaparral's  disclosure,  it  becomes,
through no act or omission on BOKF's part, in the public domain;  or (iv) it was
lawfully and independently obtained by BOKF from a third party who was not under
an obligation of confidentiality.

         Section 5.2.  Operation of the Business of Chaparral.  Chaparral agrees
that from the date hereof to the Effective Time,  except as contemplated by this
Agreement  or to the extent that BOKF shall  otherwise  consent  (which  consent
shall not be unreasonably withheld),

         (a)  Chaparral  will  operate its business  substantially  as presently
operated and only in the ordinary course,  and,  consistent with such operation,
it will use its reasonable best efforts to preserve intact its present  business
organization and its  relationships  with persons having business  dealings with
it.

         (b) Chaparral  will maintain and keep its  properties in as good repair
and condition as at present,  except for  depreciation  due to ordinary wear and
tear and damage due to  casualty,  maintain  in full force and effect  insurance
comparable in amount and scope of coverage to that now  maintained,  perform all
its obligations under contracts,  leases and documents  relating to or affecting
its  assets,  properties  and  business,  and fully  comply with and perform all
material  obligations  and  duties  imposed  upon  it  by  applicable  laws  and
governmental rules, regulations and orders imposed by governmental authorities.

         (c) Except as  expressly  permitted  by  subsections  (e),  (f) and (g)
below,  Chaparral  will not,  other than in the ordinary  course of business and
consistent with  Chaparral's or CCNB's prior  practices,  (i) grant any material
salary  increase  to any  officer  or  employee  or enter  into  any new  bonus,
incentive  compensation,  deferred  compensation,  profit  sharing,  retirement,
pension,  group  insurance  or  other  benefit  plan  or any new  employment  or
consulting agreement; (ii) create or otherwise become liable with respect to any
indebtedness  for money borrowed or purchase money  indebtedness;  (iii) make or
allow any amendment of its Articles of Association, Articles of Incorporation or
Bylaws;  (iv)  issue or  contract  to issue any  shares of  Chaparral  Common or
securities  exchangeable  for or convertible  into Chaparral  Common,  except in
connection  with the exercise of the Stock  Options;  (v) purchase any shares of
Chaparral Common; (vi) enter into or assume any material contract or obligation;
(vii) incur a lien on any of its properties either real or personal; (viii) make
any  substantial  renovation of any of its properties or enter into any lease or
agreement  involving  any  substantial  obligation;  or (ix)  waive any right of
substantial value.

         (d) From January 1, 1998,  until the Closing Date,  Chaparral  will not
pay  total  dividends  exceeding  the  amount of  earnings  at  Chaparral,  on a
consolidated  basis,  during such period,  and Chaparral will not permit CCNB to
pay any dividend that would cause CCNB to no longer be "well  capitalized" under
applicable federal capital adequacy guidelines.



<PAGE>


         (e) Notwithstanding anything in this Agreement to the contrary, (i) the
Stock  Options may be exercised  and  Chaparral  may issue  Chaparral  Common in
connection therewith and otherwise perform its obligations thereunder;  (ii) the
Stock  Option  exercise  dates may be extended in the  discretion  of  Chaparral
subject to the  provisions  of this  Agreement  respecting  the exercise of such
Stock Options in connection with the consummation of the Merger;  and (iii) upon
the  exercise  of the Stock  Options,  Chaparral  may make bonus  payments in an
aggregate  amount not to exceed  $650,000 to option  holders who have  exercised
Stock Options within a period of one year prior to the Closing Date.

         (f)  Notwithstanding  anything  in  this  Agreement  to  the  contrary,
Chaparral  may pay bonuses (in addition to any bonuses paid pursuant to Sections
5.2(e) and 5.2(g)) in amounts not to exceed  $175,000 for 1998 and not to exceed
$218,750 for 1999.

         (g)  Notwithstanding  anything  in  this  Agreement  to  the  contrary,
Chaparral  may commit to pay to certain key  employees of Chaparral or CCNB (who
do not enter into employment or  noncompetition  agreements) an aggregate amount
of $32,500 in consideration of such employees entering into retention agreements
whereby such employees would continue their employment with Chaparral or CCNB at
least  through  the  earlier  of (i) June 30,  2000 or (ii) the date of the data
processing  conversion  of CCNB to the data  processing  system  used by Bank of
Texas, National Association ("BOT").

         Section 5.3.  Regulatory Approvals and Cooperation.

         (a) BOKF and BOKSub shall  promptly,  but in no event later than twenty
(20)  days  after  the  date  of  this  Agreement,  file or  cause  to be  filed
applications  to fulfill all  governmental,  regulatory  and other  requirements
(including, without limitation, obtaining the approval of the OCC, the FDIC, the
Fed,  SEC  and/or  any  other  governmental   entity  having  jurisdiction  over
Chaparral,  Delaware,  CCNB or BOKF  and pay all fees  and  expenses  associated
therewith)  required  by BOKF or BOKSub for the  completion  of the  transaction
contemplated by this Agreement;  and promptly  furnish  Chaparral with copies of
all such regulatory filings.

         (b) Chaparral  shall take all action  necessary and fully  cooperate in
good faith with BOKF and BOKSub to bring about the Merger  contemplated  by this
Agreement  as soon as  practicable.  Chaparral  will give any  notices  to third
parties,  and  Chaparral  will use its best  efforts to obtain  any third  party
consents,  that BOKF may reasonably  request in connection with the consummation
of the Merger.

         Section 5.4. Public Disclosure.  None of BOKF, BOKSub,  Chaparral,  nor
any representative of said parties,  will make any public disclosure  concerning
this Agreement or the Merger  contemplated  herein without the mutual consent of
each of the other  parties  hereto to the timing and content of the  disclosure;
provided,  however,  the parties hereto may make any disclosure (i) necessary to
maintain  compliance with applicable federal or state laws or regulations,  (ii)
required in connection  with the making of any  application  necessary to effect
the Merger, or (iii) as contemplated by Section 5.6.

     Section 5.6. Shareholder Approval.  Chaparral,  acting through its Board of
Directors, shall, in accordance with applicable law:



<PAGE>


         (a) Duly  call,  give  notice  of,  convene  and hold a meeting  of its
shareholders   on  a  date  mutually   selected  by  BOKF  and  Chaparral   (the
"Shareholders's  Meeting") for  submission of this  Agreement and the Merger for
approval of such shareholders as required by the TBCA, and

         (b) Subject to its fiduciary  duties to the  shareholders of Chaparral,
include in the Proxy  Statement  (as defined  below) the  recommendation  of its
Board of  Directors  that the  shareholders  of  Chaparral  vote in favor of the
approval and adoption of the Agreement and the Merger and

         (c) Cause  the Proxy  Statement  to be  mailed to the  shareholders  of
Chaparral as soon as  practicable,  and take such other action as is  reasonably
necessary  to  obtain  approval  of  the  Agreement  and  the  Merger  from  its
shareholders. The letter to shareholders, notice of meeting, proxy statement and
form of proxy to be distributed to  shareholders  in connection  with the Merger
and the Merger Agreement shall be in form and substance reasonably  satisfactory
to BOKF and are collectively referred to herein as the "Proxy Statement."

         Section 5.7. No Solicitation.  Prior to the Effective Time, unless this
Agreement is sooner  terminated,  Chaparral shall not directly or indirectly (i)
solicit  or  encourage  inquiries  or  proposals  with  respect to the merger of
Chaparral or the sale of any of the shares of Chaparral Common or other material
asset(s) of  Chaparral  from any party  other than BOKF,  or (ii) merge with any
party or sell any of the shares of  Chaparral  Common or  material  asset(s)  of
Chaparral to any party except as set forth in this Agreement.

         Section 5.8.  Restrictions on Indebtedness.  Chaparral agrees that from
the date hereof to the Effective Time, except as contemplated by this Agreement,
Chaparral  shall not  incur any  indebtedness  for  borrowed  money or incur any
noncurrent indebtedness for the purchase price of any fixed or capital asset, or
make any extension of credit or any loans to,  guarantee the  obligations of, or
make any  additional  investments  in, any other  person,  corporation  or joint
venture (whether an existing customer or a new customer) except:

         (a)  Extensions of credit,  loans and guarantees (i) less than $300,000
per  transaction  or (ii) less than  $100,000  with  existing  customers  having
existing  credit of  $300,000  or more  made by CCNB in the  usual and  ordinary
course of its banking  business,  consistent  with prior practices and policies,
provided,  however,  that the consent of BOKF shall be deemed to have been given
unless earlier given or denied in writing (i) with respect to any loan presented
at a regularly  scheduled  meeting of CCNB's  Executive Loan  Committee,  at the
later of 3:00 p.m. on the  business day of such  meeting or the  adjournment  of
such meeting,  provided that all  information  provided to the members of CCNB's
Executive  Loan  Committee with respect to such loan is delivered to BOKF at the
same time it is delivered to such  committee  members,  and (ii) with respect to
all other loans,  at the close of business on the next business day after BOKF's
consent is  requested  and all  information  relating to the making,  renewal or
alteration of such loan is furnished to BOKF.

         (b) Legal  investments by CCNB in the usual and ordinary  course of its
banking business consistent with prior practices and policies.



<PAGE>


         (c)  Borrowings  from the Federal Home Loan Bank,  the Federal  Reserve
Bank,  deposit  liabilities,  and  federal  funds  transactions  by  CCNB in the
ordinary course of business consistent with past practices.

         Section 5.9 Audited Financial Statements. Within five (5) business days
after  receipt  thereof from  Chaparral's  auditors,  but in no event later than
March 31, 1999,  Chaparral shall furnish BOKF with audited financial  statements
of Chaparral as of December 31, 1998.


                                   ARTICLE VI
                     CONDITIONS OF MERGER - BOKF AND BOKSUB

         The   obligations  of  BOKF  and  BOKSub  to  close  the   transactions
contemplated by this Agreement are subject to the  satisfaction of the following
conditions, unless waived by BOKF and BOKSub.

         Section 6.1.  Representations  and Warranties.  The representations and
warranties of Chaparral set forth in Article II hereof shall be true and correct
in all material  respects as of the date of this Agreement and as of the Closing
Date as though made on and as of the Closing Date, except as otherwise  provided
or  permitted by this  Agreement,  and BOKF shall have  received a  certificate,
executed by the President of Chaparral to that effect.

         Section 6.2.  Performance of Obligations of Chaparral.  Chaparral shall
have performed all  obligations  and  agreements  required to be performed by it
under this Agreement in all material respects prior to or at the Closing.

         Section 6.3. Authorization of Merger. All action necessary to authorize
the execution,  delivery and  performance of this Agreement by Chaparral and the
consummation of the  transactions  contemplated  hereby shall have been duly and
validly taken by the Board of Directors of Chaparral,  and Chaparral  shall have
full power and right to merge on the terms provided herein. All action necessary
to authorize and consummate the Merger  contemplated hereby shall have been duly
and validly taken by the  shareholders of Chaparral and holders of not more than
10% of the  Chaparral  Common  either  (i)  file  with  Chaparral  prior  to the
Shareholders'  Meeting  a notice  of their  intent to  exercise  their  right to
dissent  to the  Merger or (ii) vote  against  the  Merger at the  Shareholders'
Meeting.


                                   ARTICLE VII
                        CONDITIONS OF MERGER - CHAPARRAL

         The obligation of Chaparral to close the  transactions  contemplated by
this  Agreement  is subject to the  satisfaction  of the  following  conditions,
unless waived by Chaparral:



<PAGE>


         Section 7.1.  Representations  and Warranties.  The representations and
warranties  of BOKF and BOKSub set forth in Article  III and  Article IV hereof,
respectively,  shall be true and correct in all material respects as of the date
of this  Agreement  and as of the  Closing  Date as though made on and as of the
Closing Date, except as otherwise  provided or permitted by this Agreement,  and
Chaparral shall have received a certificate,  executed by the Presidents of BOKF
and BOKSub to that effect.

         Section 7.2.  Performance of Obligations of BOKF. BOKF and BOKSub shall
have performed all  obligations  and  agreements  required to be performed by it
under this Agreement in all material respects prior to or at the Closing.

         Section  7.3.  Authorization  of Merger by BOKF and BOKSub.  All action
necessary to authorize the execution, delivery and performance of this Agreement
by BOKF and BOKSub and the consummation of the Merger  contemplated hereby shall
have been duly and validly taken by the Boards of Directors and  shareholders of
BOKF and BOKSub,  respectively,  and BOKSub and Chaparral  shall have full power
and right to merge on the terms provided herein.

         Section 7.4. Authorization of Merger by Chaparral. All action necessary
to authorize and consummate the Merger  contemplated hereby shall have been duly
and validly taken by the  shareholders of Chaparral and holders of not more than
one third of the Chaparral  Common either (i) file with  Chaparral  prior to the
Shareholders'  Meeting  a notice  of their  intent to  exercise  their  right to
dissent  to the  Merger or (ii) vote  against  the  Merger at the  Shareholders'
Meeting.


                                  ARTICLE VIII
           CONDITIONS TO RESPECTIVE OBLIGATIONS OF BOKF AND CHAPARRAL

         The respective  obligations of BOKF and Chaparral  under this Agreement
are, at their respective options, subject to the further condition that:

         Section  8.1.  Governmental  Approvals.  The parties  hereto shall have
received  approval of the Merger and issuance of the BOKF Notes as  contemplated
by this  Agreement  from all necessary  governmental  agencies and  authorities,
including,  to the extent required,  the Fed, the OCC, the FDIC and the SEC, and
such  approvals   shall  not  have  been  contested  by  any  Federal  or  state
governmental  authority nor by any other third party by formal  proceeding,  and
none of such  approvals or consents  shall be subject to any terms or conditions
that are  unreasonable  or unduly  burdensome in the opinion of the party hereto
which is obliged to  discharge  or comply with such term or  condition,  and all
applicable regulatory waiting periods have expired. It is understood that if any
contest as aforesaid is brought by formal  proceedings,  BOKF may, but shall not
be obligated to, answer and defend such contest.

         Section  8.2.  Documents.  Each party  hereto  shall have  received all
documents  required  to be  received  from  the  other  party on or prior to the
Closing Date,  including those set forth in Section 9.3 hereof,  all in form and
substance reasonably satisfactory to the receiving party.




<PAGE>


                                   ARTICLE IX
                                     CLOSING

         Section 9.1. Closing.  The closing (the "Closing") for the consummation
of the  transactions  contemplated  by this  Agreement  shall  take place at the
offices of Jenkens & Gilchrist,  a Professional  Corporation,  1445 Ross Avenue,
Suite 3200,  Dallas,  Texas 75202 at 10:00 a.m. Central Time on the Closing Date
described in Section 9.2,  unless  another date or place is agreed to in writing
by the parties hereto.

         Section 9.2. Closing Date; Effective Time. The Closing shall take place
on a date (the "Closing Date") mutually  agreeable to BOKF and Chaparral,  which
date  shall  be  within  ten  (10)  days  after  the  receipt  of all  necessary
regulatory,  corporate and other  approvals and the  expiration of any mandatory
waiting periods, provided,  however, that the Closing Date shall not occur prior
to April 2, 1999 or later than July 2, 1999. Subject to the terms and conditions
set forth herein,  including  receipt of all  regulatory  approvals,  the Merger
shall  be  effective  upon  the  later of the  filing  of,  or the date and time
specified in, the  Certificate  of Merger  relating to the Merger and filed with
the  Secretary of State of the State of Texas (the  "Effective  Time"),  and the
parties shall use their best efforts to cause the Effective Time to occur on the
Closing Date.

         Section 9.3.  Closing Deliveries.

         (a)      At the Closing, Chaparral shall deliver to BOKF and BOKSub:

               (i)  a  certified  copy  of  the  Articles  of  Incorporation  or
          Association of Chaparral, Delaware and CCNB;

                  (ii)  a  certificate,  signed  by an  appropriate  officer  of
Chaparral,  acting  solely in his capacity as an officer of  Chaparral,  stating
that (A) each of the representations  and warranties  contained in Article II is
true and correct in all  material  respects at the time of the Closing  with the
same force and effect as if such representations and warranties had been made at
Closing,  and (B) all of the  conditions  set  forth in  Article  VII have  been
satisfied or waived as provided therein;

                  (iii) a certified copy of the resolutions of Chaparral's Board
of Directors and  shareholders,  as required for valid approval of the execution
of this Agreement and the consummation of the Merger and the other  transactions
contemplated hereby;

                  (iv) good standing and existence certificates,  dated a recent
date, duly certifying the existence and good standing of Chaparral in Texas;

                  (v) executed employment  agreements for Charles O. Rolfe, Jr.,
and John B. Whisenant,  in substantially  the form as attached hereto as Exhibit
"C" and Exhibit "D", respectively;

                  (vi) an  executed  noncompetition  agreement  for  Charles  W.
Eisemann in substantially the form as attached hereto as Exhibit "E"; and


<PAGE>


                  (vii) an opinion of the  accounting  firm of Payne,  Faulkner,
Smith & Jones,  P.C., or another accounting firm mutually agreed to by Chaparral
and BOKF, in a form reasonably  acceptable to BOKF, opining that no payment,  of
which such accounting firm has knowledge, to any employee of Chaparral, Delaware
or CCNB is an excess parachute payment within the meaning of Section 280G of the
Code.

         (b) At the Closing, BOKF shall deliver to Chaparral:

                    (i)  certified  copies of the Articles of  Incorporation  of
                         BOKF and BOKSub;

                  (ii) a certificate  signed by an  appropriate  officer of BOKF
and BOKSub stating that (A) each of the representations and warranties contained
in Article III and IV is true and correct in all  material  respects at the time
of the  Closing  with the same force and effect as if such  representations  and
warranties  have been made at Closing and (B) all of the conditions set forth in
Article VI have been satisfied;

                  (ii) a certified  copy of the  resolutions  of BOKF's Board of
Directors  authorizing  the execution of this Agreement and the  consummation of
the transactions contemplated hereby;

                  (iii) a certified copy of the resolutions of BOKSub's Board of
Directors and  shareholder,  as required for valid  approval of the execution of
this Agreement and the consummation of the transactions contemplated hereby; and

                  (iv) good standing and existence certificates,  dated a recent
date, duly certifying the existence and good standing of Chaparral in Texas;

                  (v) executed employment  agreements for Charles O. Rolfe, Jr.,
and John B. Whisenant,  in substantially  the form as attached hereto as Exhibit
"C" and Exhibit "D", respectively;

                  (vi) an  executed  noncompetition  agreement  for  Charles  W.
Eisemann in substantially the form as attached hereto as Exhibit "E"; and

                  (vii) evidence of the approval of all  regulatory  authorities
required for the consummation of the Merger and the transactions contemplated by
this Agreement.


                                    ARTICLE X
                                   TERMINATION

     Section  10.1.  Termination.  This  Agreement may be terminated at any time
prior to the Effective Time by:

          (a) The mutual consent of the  respective  Boards of Directors of BOKF
     and Chaparral;



<PAGE>


         (b) BOKF if the  conditions  set forth in Article  VI hereof  shall not
have been met;

         (c) Chaparral if the  conditions  set forth in Article VII hereof shall
not have been met;

         (d) BOKF if the  conditions  set forth in Article VIII hereof shall not
have been met through no fault of, or reason attributable to, BOKF;

         (e) Chaparral if the  conditions set forth in Article VIII hereof shall
not have been met  through no fault of, or reason  attributable  to,  Chaparral,
Delaware, or CCNB; or

         (f)  Chaparral  in the event the  Closing  has not  occurred by July 2,
1999, or such other date as the parties hereto agree in writing.

         Any party desiring to terminate  this Agreement  pursuant to any of the
foregoing provisions shall give notice of such termination to the other party in
accordance with Section 12.2 hereof.

         Section 10.2. Effect of Termination.  Without limiting any other relief
to which either party  hereto may be entitled for breach of this  Agreement,  in
the event of the termination  and abandonment of this Agreement  pursuant to the
provisions  of Section 10.1 hereof,  no party to this  Agreement  shall have any
further liability or obligation in respect of this Agreement; provided, however,
that the  confidentiality  provisions  of  Section  5.1,  above,  shall  survive
termination.  Any such  termination  that  occurs  as a result  of a breach of a
representation  or warranty made in this  Agreement  that, at the time made, was
not known to the party  making  such  representation  to be untrue,  or any such
termination  that through no fault of any of the parties to this Agreement shall
be without  liability  to any of the  parties  hereto,  but if such  termination
results from the willful misrepresentation of a party or the wilful failure of a
party to fulfill a condition to the  performance  of the obligation of the other
party to this  Agreement,  such  party  shall be  fully  liable  for any and all
damages,  costs and expenses (including reasonable attorney's fees) sustained or
incurred by the other party or parties as a result of such failure or breach.

         Section  10.3.  Waiver and  Amendment.  Any term or  provision  of this
Agreement,  except statutory  requirements and requisite approvals of regulatory
authorities,  may be waived at any time by the party  which is  entitled  to the
benefits  thereof and this Agreement may be amended or  supplemented at any time
by the mutual  agreement of BOKF,  BOKSub and Chaparral  through action taken by
their respective Boards of Directors.


                                   ARTICLE XI
                              ADDITIONAL COVENANTS



<PAGE>


         Section  11.1.  No Survival.  None of the  representations,  covenants,
warranties and agreements  contained in this Agreement shall survive the Closing
and the Effective Time except (i) in accordance with Section 11.2, and (ii) this
Agreement  shall  continue  and remain in full force and  effect  regarding  the
covenants  of BOKF that by their terms are to be performed  after the  Effective
Time  (including  without  limitation  the  provisions in Section 1.5 concerning
payment of the Merger  Consideration and Sections 11.2, 11.3, 11.4 and 11.5) for
the period of the applicable statute of limitations.

         Section 11.2.  Escrow.  At the Effective  Time, BOKF shall establish an
escrow  account  (the  "Representation  Escrow")  with  the  Escrow  Agent.  The
Representation  Escrow  shall be  governed by an escrow  agreement,  the form of
which  is  attached   hereto  as  AExhibit  "F"  (the   ARepresentation   Escrow
"Agreement"), which shall provide as follows:

         (a) At the Effective Time,  BOKF shall deposit the principal  amount of
$400,000 into the Representation  Escrow,  which, together with (i) all interest
earned thereon, but reduced by (ii) any Representation  Escrow Allowed Claim (as
hereafter defined) is referred to herein as the "Representation Escrow Funds."

         (b) The Representation  Escrow Funds shall be invested in a certificate
of deposit at CCNB  maturing on March 31, 2000, at the rate and on the terms and
conditions  generally  offered by CCNB for certificates of deposit of comparable
size and duration, and upon maturity as necessary,  in three-month  certificates
of deposit at CCNB at the rates and on terms and conditions generally offered by
CCNB for  certificates  of  comparable  size and duration at each renewal  date,
provided  that any  penalty  for early  withdrawal  of such funds will either be
waived by CCNB or borne by BOKF.

         (c)  The  representations,  warranties,  covenants  and  agreements  of
Chaparral contained in this Agreement shall survive the Closing,  and BOKF shall
be indemnified  and held harmless from any and all losses,  to be decreased at a
rate of  thirty-five  percent  (35%) to account for all federal and state taxes,
arising  from any  material  breach by  Chaparral  of any such  representations,
warranties, covenants and agreements (collectively, "Losses"), provided that (i)
written  notice of such Losses must be given to Chaparral on or before March 31,
2000,  (ii) the sole remedy  available  to BOKF for any Losses  shall be limited
solely to a claim against the  Representation  Escrow Funds, (iii) all payments,
if any,  to be made in  respect  of any  Losses  shall be made  solely  from the
Representation  Escrow  Funds,  (iv) the  Chaparral  shareholders  shall have no
obligations  or  liability  for any such  Losses  except  to the  extent  of the
Representation  Escrow  Funds,  and (v) no claim  shall  be made for any  Losses
unless and until the aggregate amount of all Losses exceeds $25,000.

         (d) In the event BOKF makes no claim for any Losses on or before  March
31, 2000, the  Representation  Escrow  Agreement  shall terminate and the Escrow
Agent shall, on or before April 15, 2000,  distribute the Representation  Escrow
Funds on a pro rata  basis to the  holders  of the  Chaparral  Common  as of the
Effective Time.



<PAGE>


         (e) In the event BOKF  makes a claim for any Losses on or before  March
31, 2000, the Escrow Agent shall (i) on or before April 15, 2000,  distribute on
a pro rata basis to the holders of the Chaparral Common as of the Effective Time
an amount equal to the Representation Escrow Funds less the amount of all Losses
claimed  by  BOKF,   and  (ii)   continue  to  hold  and  invest  the  remaining
Representation  Escrow  Funds  until  such claim is  resolved  by (i) the mutual
agreement  of a majority  of the Agents (as defined  below) and BOKF,  or (ii) a
final  adjudication  determining the merits of the BOKF claim, at which time the
Representation Escrow Agreement shall terminate,  the Escrow Agent shall pay the
claim of BOKF as  mutually  agreed or finally  adjudicated  (an  "Representation
Escrow  Allowed  Claim") and the Escrow  Agent shall  distribute  any  remaining
Representation  Escrow Funds on a pro rata basis to the holders of the Chaparral
Common as of the Effective Time.

         (f)  The  rights  of  the  holders  of  the  Chaparral  Common  in  the
Representation   Escrow  and  the  Representation  Escrow  Funds  shall  not  be
assignable or  transferable  except by operation of law or by intestacy and will
not be evidenced by any certificate or other interest.

         (g) The persons who are members of the Board of  Directors of Chaparral
immediately prior to the Closing shall collectively serve as agents, acting by a
majority vote in the same manner as a board of directors  acting under the TBCA,
for the holders of the Chaparral  Common as of the Effective Time and shall have
full  authority to act for and on behalf  thereof in the  administration  of the
provisions  of this Section (the  AAgents@).  The actions of the Agents shall be
deemed  actions  taken by them as members of the Board of Directors of Chaparral
prior to the Closing.

         (h) BOKF shall pay the fees and costs of the Escrow  Agent with respect
to the Representation Escrow.

         Section 11.3.  Indemnification; Insurance.

         (a) From and after the Effective Time, BOKF (the "Indemnifying  Party")
shall indemnify and hold harmless each present and former director,  officer and
employee  of  Chaparral  and  CCNB  determined  as of the  Effective  Time  (the
"Indemnified  Parties")  against  any costs or  expenses  (including  reasonably
attorneys'  fees),  judgments,  fines,  losses,  claims,  damages or liabilities
(collectively,  "Costs")  incurred in connection with any claim,  action,  suit,
proceeding  or  investigation,  whether  civil or  criminal,  administrative  or
investigative,  arising out of matters  existing or occurring at or prior to the
Effective Time,  whether asserted or claimed prior to, at or after the Effective
Time to the fullest extent to which such Indemnified Parties were entitled under
the  Articles  of  Incorporation,  Certificate  of  Incorporation,  Articles  of
Association and Bylaws of Chaparral, Delaware and CCNB.



<PAGE>


         (b) Any Indemnified Party wishing to claim  indemnification  under this
section,   upon  learning  of  any  such  claim,  action,  suit,  proceeding  or
investigation,  shall promptly notify the Indemnifying Party, but the failure to
so notify shall not relieve the indemnifying  Party of any liability it may have
to such  Indemnified  Party if such failure does not  materially  prejudice  the
Indemnifying Party. In the event of any such claim, action, suit,  proceeding or
investigation  (whether  arising  before or after the Effective  Time),  (i) the
Indemnifying  Party shall have the right to assume the  defense  thereof and the
Indemnifying Party shall not be liable to such Indemnified Parties for any legal
expenses of other counsel or any other  expenses  subsequently  incurred by such
Indemnified  Parties in connection with the defense thereof,  except that if the
Indemnifying  Party  elects  not to  assume  such  defense  or  counsel  for the
Indemnified  Party and the  Indemnified  Parties,  the  Indemnified  Parties may
retain counsel which is reasonably  satisfactory to the Indemnifying  Party, and
the Indemnifying Party shall pay, promptly as statements  therefor are received,
the  reasonable  fees and expenses of such counsel for the  Indemnified  Parties
(which may not exceed one firm in any jurisdiction unless the use of one counsel
for such  Indemnified  Parties  would  present  such  counsel with a conflict of
interest),  (ii) the  Indemnified  Parties will  cooperate in the defense of any
such  matter  and  (iii) the  Indemnifying  Party  shall  not be liable  for any
settlement effected without its prior written consent.

         (c) BOKF shall  maintain its existing  policy of directors and officers
liability insurance (or comparable coverage) for a period of not less than three
years after the  Effective  Time;  which  policy shall be amended,  however,  to
include the directors and officers of  Chaparral,  Delaware and CCNB,  and which
shall be a "claims made" policy providing coverage for (among other things) acts
or omissions occurring prior to the Effective Time.

         (d) In the  event  that  BOKF or any of its  respective  successors  or
assigns (i)  consolidates  with or merges into any other person and shall not be
the  continuing  or surviving  corporation  or entity of such  consolidation  or
merger or (ii) transfers all or  substantially  all of its properties and assets
to any person,  then,  and in each such case, the successors and assigns of such
entity  shall  assume  the  obligations  set  forth  in  this  Agreement,  which
obligations  are expressly  intended to be for the  irrevocable  benefit of, and
shall be enforceable by, each director and officer covered hereby.

         Section 11.4. BOT Director  Position.  As soon as practicable after the
Effective  Time,  BOKF shall  cause  (pursuant  to a voting  agreement  with its
controlling  shareholder or otherwise) the Chairman of the Board of Chaparral to
be elected as a member of the Board of Directors of BOT. BOKF shall  continue to
cause such person to be nominated  and elected as a director of BOT for a period
of two years after the  Effective  Time. If for any reason such person cannot or
will not  serve as a  director  of BOKF,  BOKF  and the  board of  directors  of
Chaparral shall mutually agree to designate  another person who was on the Board
of Directors of Chaparral  as of the  Effective  Time to fill such  position for
such period of time.

         Section 11.5.  Severance  Plan.  Prior to the Closing  Date,  CCNB will
enter into a severance  policy  providing for the payment to any employee who is
involuntarily  dismissed  within the first 180 days after the Closing  Date,  an
amount  equal to one week=s  pay for each year of service or portion  thereof by
such employee, and BOKF will honor such policy after the Closing with respect to
the employees of CCNB as of the Closing Date.

         Section 11.6. Employee Benefits. BOKF presently intends that, after the
Merger,  BOKF  and  Chaparral  will  not make  additional  contributions  to the
employee benefit plans of Chaparral. Each employee of Chaparral or any direct or
indirect subsidiary of Chaparral who remains an employee of Chaparral or BOKF or
any direct or indirect  subsidiary  of Chaparral or BOKF  immediately  after the
Effective Time (the  "Continuing  Employees") will be entitled to participate in
the employee benefit plans and programs maintained for employees of BOKF and its
affiliates,  in accordance with the respective terms of such plans and programs,
and BOKF shall take all actions necessary or appropriate to facilitate  coverage
of the  Continuing  Employees  in such  plans  and  programs  from and after the
Closing Date, subject to the following:


<PAGE>


         (a) Each  Continuing  Employee  will be  entitled  to credit  for prior
service with Chaparral for all purposes under the employee welfare benefit plans
and other  employee  benefit plans and programs  (other than those  described in
subsection  B.  below  and any  stock  option  plans)  sponsored  by BOKF or its
affiliates.  Any preexisting  condition  exclusion  applicable to such plans and
programs shall be waived with respect to any Continuing  Employee.  For purposes
of  determining  each  Continuing  Employee's  benefit for the year in which the
Merger  occurs  under  the  BOKF  vacation  program,  any  vacation  taken  by a
Continuing  Employee preceding the Closing Date for the year in which the Merger
occurs will be deducted from the total BOKF vacation  benefit  available to such
employee for such year. For purposes of determining  the number of vacation days
available  with  respect to each  Continuing  Employee for the year in which the
Merger  occurs,  that  the  number  of  vacation  days for  such  year  shall be
determined under Chaparral's vacation policies in effect as of January 1, 1999.

         (b) Each  Continuing  Employee  shall be  entitled  to credit  for past
service  with  Chaparral or any of its direct or indirect  subsidiaries  for the
purpose of satisfying any eligibility or vesting periods  applicable to the BOKF
employee  pension benefit plans that are subject to Section 401(a) and 501(a) of
the Code. Notwithstanding the foregoing, BOKF shall not grant any prior years of
service  credit to employees of Chaparral,  with respect to any defined  benefit
plans sponsored (or contributed to) by BOKF; instead, Continuing Employees shall
be treated as newly hired employees of BOKF as of the date following the Closing
Date for  purposes of  determining  eligibility,  vesting  and benefit  accruals
thereunder.


                                   ARTICLE XII
                                  MISCELLANEOUS

         Section 12.1.  Entire  Agreement.  This  Agreement  contains the entire
agreement  among BOKF,  BOKSub and  Chaparral  with  respect to the Merger,  and
supersedes  all prior  agreements  and  understandings  relating  to the subject
matter of this Agreement.

         Section 12.2.  Notices.  All notices or other  communications  that are
required or permitted  hereunder shall be in writing and shall be deemed to have
been given or made on the date of  delivery,  in the case of hand  delivery,  or
three (3) business  days after  deposit in the United  States  Registered  Mail,
postage  prepaid,  or upon receipt if transmitted  by facsimile  telecopy or any
other means, addressed (in any case) as follows:

         If to BOKF or BOKSub:

         BOK Financial Corporation
         P.O.  Box 2300
         Tulsa, OK 79192
         Attention: Mr. James A. White
         Telecopy No.:  (918) 588-6853

         and


<PAGE>


         Bank of Texas, N.A.
         5956 Sherry Lane, Suite 1800
         Dallas, Texas 75225
         Attention: Mr. C. Fred Ball, Jr., President
         Telecopy No.: (214) 521-9072

         With a Copy To:

         Frederic Dorwart, Lawyers
         Old City Hall
         124 East Fourth Street
         Tulsa, OK  74103-5010
         Attention: Frederic Dorwart, Esq.
         Telecopy No.:  (918) 583-8251

         If to Chaparral:

         Chaparral Bancshares, Inc.
         333 West Campbell Road
         Richardson, Texas 75080
         Attention:  Mr. Charles W. Eisemann
         Telecopy No.:  (972) 234-8641

         With a Copy To:

         Jenkens & Gilchrist,
         a Professional Corporation
         1445 Ross Avenue, Suite 3200
         Dallas, Texas  75202-2799
         Attention: Charles E. Greef, Esq.
                       and Brian R. Marek, Esq.
         Telecopy:  (214) 855-4300

         Section  12.3.  Counterparts.  This  Agreement  may be  executed in any
number  of  counterparts,  and  each  such  counterpart  hereof,  including  any
facsimile copy thereof,  shall be deemed to be an original  instrument,  but all
such counterparts together shall constitute but one agreement.

         Section 12.4.  Governing Law. THIS  AGREEMENT  SHALL BE GOVERNED BY AND
CONSTRUED  IN  ACCORDANCE  WITH THE LAWS OF THE STATE OF TEXAS,  WITHOUT  GIVING
EFFECT TO ANY CHOICE OR CONFLICT OF LAW  PROVISION  OR RULE THAT WOULD CAUSE THE
APPLICATION OF THE LAWS OF ANY JURISDICTION OTHER THAN THE STATE OF TEXAS.



<PAGE>


         Section  12.5.  Venue.  ALL  ACTIONS OR  PROCEEDINGS  WITH  RESPECT TO,
ARISING  DIRECTLY OR INDIRECTLY IN CONNECTION  WITH,  OUT OF, RELATED TO OR FROM
THIS AGREEMENT OR ANY OF THE OTHER DOCUMENTS SHALL BE LITIGATED IN COURTS HAVING
SITUS IN DALLAS,  DALLAS COUNTY,  TEXAS, AND EACH PARTY HERETO HEREBY SUBMITS TO
THE  JURISDICTION  OF ANY SUCH COURT IN ANY SUCH  ACTION  AND HEREBY  WAIVES ANY
RIGHTS  IT MAY HAVE TO  TRANSFER  OR  CHANGE  THE  JURISDICTION  OR VENUE OF ANY
LITIGATION BROUGHT AGAINST IT IN ACCORDANCE WITH THIS SECTION.

         Section 12.6.  Additional  Documentation.  As soon as practicable after
the Effective Time, the parties hereto shall execute and file such documents and
take such  other  actions  as may be  necessary  or  appropriate  to effect  the
transactions contemplated by this Agreement.

         Section 12.7.  Severability.  If any provision of this Agreement or the
application  thereof to any person or  circumstance  shall,  to any  extent,  be
invalid or unenforceable,  the remainder of this Agreement,  and the application
of such  provision to persons or  circumstances  other than those to which it is
held invalid and unenforceable, shall not be affected thereby and each provision
of this Agreement shall be valid and enforced to the fullest extent permitted by
law.

         Section  12.8.  Expenses.  Each party shall bear and pay for all of its
own costs and expenses incurred in connection with this Agreement or the Merger,
including respective fees and expenses of financial consultants, accountants and
counsel.

         Section 12.9.  Exhibits.  The exhibits and  schedules  attached to this
agreement,  together with all documents  incorporated by reference therein, form
an  integral  part of this  Agreement  and are  hereby  incorporated  into  this
Agreement  wherever reference is made to them to the same extent as if they were
set out in full at the point in which the reference is made.  Items disclosed on
any Exhibit or Schedule to this Agreement shall be deemed to be disclosed on all
Exhibits or  Schedules  hereto and the failure of  Chaparral to list any item on
one or more  Exhibits  or  Schedules  shall  not give rise to a claim by BOKF or
BOKSub.

         Section 12.10.  Costs of  Litigation.  In any action brought by a party
hereto to enforce the  obligations  of any other party  hereto,  the  prevailing
party shall be entitled to collect from the  opposing  party to such action such
party's reasonable  litigation costs and attorneys fees and expenses  (including
court costs,  reasonable  fees of  accountants  and experts,  and other expenses
incidental to the litigation).




<PAGE>



FINIDAL:72777.  33131-00001
         IN  WITNESS  WHEREOF,  the  parties  hereto  have  duly  executed  this
Agreement as of the date and year first above written.

BOK FINANCIAL CORPORATION

By:      /S/ James Ulrich                                                     
         James Ulrich, Senior Vice President



BOKF MERGER CORPORATION NUMBER NINE

By:      /s/ C.F. Ball                                                         
         C. Fred Ball, Jr., President


CHAPARRAL BANCSHARES, INC.


By:      /s/ Charles W. Eisemann                                             
         Charles W. Eisemann, Chairman of the Board


<PAGE>


                                                   Schedule 1.7

                                   CCFC Assets
                             as of February 16, 1999


     All loans on the books of CCNB  beginning  with the numbers  20001  through
20018,   81329   through  82352  and  118193,   818740  and  4001695,   totaling
approximately 660 loans.

Principal Balance:                  $4,793,834.07
Less unearned discount        (618,949.49)
         Book Value                 $3,965,688.58

         As of this date, the Book Value of the CCFC Assets is equivalent to the
Tax Basis of such assets.


<PAGE>


                                 Schedule 2.2(a)

                    Shareholder List - Available Upon Request


<PAGE>


                                 Schedule 2.2(b)

                 List of Stock Options - Available Upon Request


<PAGE>


                                  Schedule 2.15

                   Employment Contracts and Employee Benefits


         Employment  Contracts.  There are no existing employment contracts with
the employees of Chaparral,  Delaware,  or CCNB. CCNB will enter into employment
agreements with Charles O. Rolfe,  Jr., and John B. Whisenant,  in substantially
the form as  attached  hereto as  Exhibit  "C" and  Exhibit  "D",  respectively;
pursuant to Section 9.3 of this Agreement.

       Employee Benefits. CCNB provides the following benefits to its employees:

Major Medical, Dental and Vision Insurance
Long-Term Disability Insurance
Accidental Death & Dismemberment Insurance
Life Insurance (up to two times salary, maximum of $200,000)
Vacation Benefits
Simplified Employee Pension Plan with Salary Reduction Option
Share Option Plan


<PAGE>


                                  Schedule 2.16

                            Contracts and Commitments


         CCNB has entered into a construction  contract with Pogue, Inc. for the
construction  of CCNB's branch in McKinney,  Texas.  The balance owing under the
terms of such contract is $336,856. Draws are to be paid as work is completed.

         At the request of BOKF, CCNB is currently  negotiating an Agreement for
Information   Technology  Services  with  Electronic  Data  Systems  Corporation
("EDS"),  which  agreement is expected to be executed and delivered prior to the
Closing Date.

<PAGE>

                                   EXHIBIT "A"

                                 PROMISSORY NOTE

Amount                          Dallas, Texas                               Date
$___________                                                    __________, 1999


         FOR VALUE RECEIVED,  the  undersigned,  BOK Financial  Corporation,  an
Oklahoma   corporation   ("Maker"),   hereby   promises  to  pay  to  the  order
of___________________________  ("Holder"), at the address of Holder set forth on
the  signature  page hereof,  or at such other address given to Maker by Holder,
the principal sum of _____________________________  ($______________),  together
with interest, as hereinafter described.

         This Note has been  executed  and  delivered  in  connection  with that
certain  Agreement and Plan of Merger (the "Merger  Agreement"),  dated February
19,  1999,  by and among  Maker,  BOKF Merger  Corporation  Number Nine, a Texas
corporation, and Chaparral Bancshares, Inc., a Texas corporation, and represents
all  or a  portion  of the  Merger  Consideration  (as  defined  in  the  Merger
Agreement) due to Holder. This Note is an unsecured general obligation of Maker.

   Section 1.  Interest and Payment.

         (a)  Prior  to  the  occurrence  of a  default  (hereinafter  defined),
interest shall be payable on the outstanding principal balance of this Note at a
rate per annum  equal to ____% [the  Applicable  Federal  Rate as defined in the
Internal  Revenue Code as in effect on the Closing Date].  Interest on this Note
shall be calculated at a daily rate equal to 1/360 of the annual percentage rate
which this Note bears, subject to the provisions hereof limiting interest to the
Maximum Lawful Rate (as herein defined).

         (b) The  entire  outstanding  principal  balance  of this  Note and all
accrued but unpaid interest  thereon shall be due and payable in full on January
2, 2000.

         (c) After the  occurrence  of a  default,  for so long as such  default
remains  uncured or upon  acceleration by Holder  following a default,  past due
principal,  and past due interest,  to the extent  permitted by law,  shall bear
interest at the lesser of (i) Maximum Lawful Rate or (ii) 18%.

         (d) Maker  shall not be entitled to prepay this Note in full or in part
prior to the maturity date hereof without the prior written consent of Holder.

         Section 2.  General Provisions.

         Whenever any payment shall be due under this Note on a day which is not
a business  day,  the date on which such payment is due shall be extended to the
next  succeeding  business day, and such  extension of time shall be included in
the computation of the amount of interest then payable.



<PAGE>



                                                         4
FINIDAL:72935.1  33131-00001
         All principal, interest and other sums payable under this Note shall be
paid, not later than two o'clock p.m. (Dallas, Texas time), on the day when due,
in immediately  available funds in lawful money of the United States of America.
Any  payment  under  this Note other  than in the  required  amount and in good,
unrestricted  U.S. funds  immediately  available to the holder hereof shall not,
regardless of any receipt or credit issued  therefor,  constitute  payment until
the required amount is actually  received by the holder hereof in such funds and
shall be made and accepted  subject to the condition that any check or draft may
be handled for collection in accordance with the practice of the collection bank
or banks.

         All payments  made as  scheduled on this Note shall be applied,  to the
extent  thereof,  first to accrued but unpaid interest and the balance to unpaid
principal.

         The  occurrence  of any one of the  following  shall be a default under
this Note (a "default"):

         (a)      Maker shall fail to pay when due any principal of or interest 
                  on this Note; or

         (b) Maker (1) (i) executes an assignment  for the benefit of creditors,
or takes any  action in  furtherance  thereof;  or (ii)  admits in  writing  its
inability  to pay, or fails to pay,  its debts  generally as they become due; or
(iii) as a debtor, files a petition,  case,  proceeding or other action pursuant
to, or  voluntarily  seeks the benefit or benefits of any debtor  relief law, or
takes any action in  furtherance  thereof;  or (iv) seeks the  appointment  of a
receiver,  trustee,  custodian or liquidator of any  significant  portion of its
property;  or (v) becomes subject to any  cease-and-desist or other order issued
by, or a party to any written agreement or memorandum of understanding  with, or
is a recipient of any  extraordinary  supervisory  letter from,  any  regulatory
agency;  or (2)  suffers  the filing of a petition,  case,  proceeding  or other
action against it as a debtor under any debtor relief law or seeking appointment
of a receiver,  trustee,  custodian or liquidator of any significant  portion of
its other  property;  or (3)  conceals,  removes,  or permits to be concealed or
removed,  any part of its property,  with intent to hinder, delay or defraud its
creditors or any of them,  or makes or suffers a transfer of any of its property
that may be fraudulent  under any bankruptcy,  fraudulent  conveyance or similar
law; or makes any  transfer of its  property to or for the benefit of a creditor
at a time when other creditors similarly situated have not been paid; or

         (c)  There  shall  occur (i) a change in  control  of Maker,  Chaparral
Bancshares,  Inc.,  or  Canyon  Creek  National  Bank;  (ii)  a  sale  of all or
substantially  all of the assets of any such entity; or (iii) the liquidation or
dissolution  of any such  entity.  For the  purpose  of this  Note,  a change of
control  shall be deemed to have  occurred  when and only when those persons and
entities who are  presently in control of Maker  (within the meaning of Rule 405
of the Securities and Exchange  Commission) become no longer in control of Maker
(within the meaning of said Rule 405).

         Upon the  occurrence  of a default,  the holder  hereof  shall have the
right to declare the unpaid principal balance and accrued but unpaid interest on
this Note at once due and payable (and upon such declaration,  the same shall be
at once due and  payable),  and to  exercise  any  rights,  powers and  remedies
available to Holder under this Note, or at law or in equity.


         Neither the failure by the holder hereof to exercise,  nor delay by the
holder hereof in  exercising,  the right to accelerate the maturity of this Note
or any other  right,  power or remedy upon any default  shall be  construed as a
waiver of such  default or as a waiver of the right to exercise  any such right,
power or remedy at any time. No single or partial  exercise by the holder hereof
of any right, power or remedy shall exhaust the same or shall preclude any other
or  further  exercise  thereof,  and every  such  right,  power or remedy may be
exercised at any time and from time to time.  All rights and  remedies  provided
for in this Note are  cumulative  of each other and of any and all other  rights
and  remedies  existing at law or in equity,  and the holder  hereof  shall,  in
addition to the rights and remedies provided herein, be entitled to avail itself
of all such other rights and remedies as may now or hereafter exist at law or in
equity for the collection of the indebtedness owing hereunder, and the resort to
any right or remedy  provided for  hereunder or provided for by law or in equity
shall  not  prevent  the  concurrent  or  subsequent  employment  of  any  other
appropriate rights or remedies. Without limiting the generality of the foregoing
provisions, the acceptance by the holder hereof from time to time of any payment
under this Note  which is past due or which is less than the  payment in full of
all  amounts  due  and  payable  at the  time  of such  payment,  shall  not (i)
constitute a waiver of or impair or  extinguish  the rights of the holder hereof
to accelerate the maturity of this Note or to exercise any other right, power or
remedy at the time or at any  subsequent  time, or nullify any prior exercise of
any such right,  power or remedy, or (ii) constitute a waiver of the requirement
of punctual payment and performance, or a novation in any respect.

         If any holder of this Note retains an attorney in  connection  with any
default or at maturity or to collect, enforce or defend this Note in any lawsuit
or in any probate,  reorganization,  bankruptcy or other  proceeding,  or if any
holder of this Note sues Maker in connection  with this Note,  then Maker agrees
to pay to holder,  all costs and expenses  incurred by such prevailing  party in
any such suit or proceeding, including attorneys' fees.



<PAGE>


         It is the  intent of Holder and Maker to  conform  to and  contract  in
strict  compliance  with applicable  usury law from time to time in effect.  All
agreements  between  Holder  or any other  holder  hereof  and Maker are  hereby
limited by the provisions of this paragraph which shall override and control all
such agreements,  whether now existing or hereafter  arising and whether written
or oral. In no way, nor in any event or  contingency  (including but not limited
to prepayment,  default,  demand for payment, or acceleration of the maturity of
any  obligation),  shall the rate of interest taken,  reserved,  contracted for,
charged or received  under this Note or  otherwise,  exceed the maximum  rate of
interest  permitted by applicable law (the "Maximum Lawful Rate").  If, from any
possible  construction  of any document,  interest would otherwise be payable in
excess of the Maximum Lawful Rate, any such construction shall be subject to the
provisions of this paragraph and such document shall be  automatically  reformed
and the interest  payable shall be  automatically  reduced to the Maximum Lawful
Rate,  without the necessity of execution of any  amendment or new document.  If
the holder hereof shall ever receive anything of value which is characterized as
interest  under  applicable  law and which would apart from this provision be in
excess of the Maximum  Lawful  Rate,  an amount  equal to the amount which would
have been excessive interest shall, without penalty, be applied to the reduction
of the  principal  amount  owing on the  indebtedness  evidenced  hereby  in the
inverse order of its maturity and not to the payment of interest, or refunded to
Maker or the other payor  thereof if and to the extent  such amount  which would
have been excessive exceeds such unpaid  principal.  The right to accelerate the
maturity of this Note does not include the right to accelerate any interest that
has not  otherwise  accrued  on the date of such  acceleration,  and the  holder
hereof does not intend to charge or receive any  unearned  interest in the event
of  acceleration.  All interest  paid or agreed to be paid to the holder  hereof
shall,  to the extent  permitted  by  applicable  law, be  amortized,  prorated,
allocated and spread  throughout the full stated term  (including any renewal or
extension)  of such  indebtedness  so that the amount of  interest on account of
such  indebtedness does not exceed the maximum  nonusurious  amount permitted by
applicable law. As used in this paragraph,  the term "applicable law" shall mean
the  laws of the  State  of  Texas or the  federal  laws of the  United  States,
whichever  laws  allow the  greater  interest,  as such laws now exist or may be
changed or amended or come into effect in the future.

         Maker and all sureties,  endorsers,  guarantors and any other party now
or  hereafter  liable for the  payment of this Note in whole or in part,  hereby
severally  waive  demand,  presentment  for  payment,  notice of dishonor and of
nonpayment,  protest, notice of protest, notice of intent to accelerate,  notice
of acceleration and all other notices of any kind.

         This Note may not be changed,  amended or modified  except in a writing
expressly  intended  for such  purpose and  executed by the party  against  whom
enforcement of the change, amendment or modification is sought.

         All of the covenants, stipulations,  promises, and agreements contained
in this Note by or on behalf of Maker  shall bind its  successors  and  assigns,
whether so expressed or not.

         THIS NOTE, AND ITS VALIDITY,  ENFORCEMENT AND INTERPRETATION,  SHALL BE
GOVERNED BY TEXAS LAW (WITHOUT  REGARD TO ANY CONFLICT OF LAWS  PRINCIPLES)  AND
APPLICABLE UNITED STATES FEDERAL LAW.

         Time  shall be of the  essence  in this  Note  with  respect  to all of
Maker's obligations hereunder.

     THIS NOTE REPRESENTS THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE
CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS
OF THE PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

         IN WITNESS  WHEREOF,  Maker has duly executed this Note to be effective
as of the day and year first above written.

                                     MAKER:


ADDRESS OF HOLDER:                          BOK FINANCIAL CORPORATION,
                                            an Oklahoma corporation
- -------------------------

_________________________           By: _______________________________        
                                        Name:
_________________________               Title:



<PAGE>

                                   EXHIBIT "B"

                                ESCROW AGREEMENT


         This   ESCROW   AGREEMENT   has  been   executed   this   ____  day  of
_______________, 1999, by and between BOK Financial Corporation ("BOKF"), Canyon
Creek Financial Corporation ("CCFC"), and Bank of Texas Trust Company,  National
Association (the "Escrow Agent").

         BOKF has  deposited  in escrow with the Escrow Agent an amount equal to
the  Aggregate Tax Basis of the CCFC Assets  pursuant to that certain  Agreement
and Plan of Merger  dated as of  February  19,  1999,  among  BOKF,  BOKF Merger
Corporation   Number  Nine,   and  Chaparral   Bancshares,   Inc.  (the  "Merger
Agreement").  The  parties  agree  that this  escrow  shall be  administered  in
accordance with Section 1.7 of the Merger Agreement,  a true and correct copy of
which is attached hereto and  incorporated  herein by this  reference.  BOKF and
CCFC (as defined in Section 1.7 of the Merger  Agreement)  shall jointly provide
all notices to the Escrow Agent required by Section 1.7 of the Merger  Agreement
to fulfil the terms and conditions of the Escrow  Account,  and the Escrow Agent
shall act only pursuant to the joint written instructions of BOKF and CCFC.

         The  parties  to  this  Escrow   Agreement  agree  that  the  following
provisions  shall  control  with  respect  to the  rights  duties,  liabilities,
privileges and immunities of the Escrow Agent.

         (a) The Escrow Agent is not a party to, and is not bound by, or charged
with notice of, any agreement out of which this escrow may arise.

         (b) The Escrow Agent acts  hereunder as a depository  only,  and is not
responsible or liable in any manner whatever for the  sufficiency,  correctness,
genuineness  or  validity  of the  subject  matter  of the  escrow,  or any part
thereof,  or for the form or execution thereof, or for the identity or authority
of any person  executing  or  depositing  it.  The Escrow  Agent will not render
investment advice with respect to the subject matter of this escrow.

         (c) In the event the Escrow Agent  becomes  involved in  litigation  in
connection  with this escrow,  the  undersigned  jointly and severally  agree to
indemnify  and save the Escrow  Agent  harmless  from all loss,  cost,  damages,
expenses  and  attorney's  fees  suffered or  incurred by the Escrow  Agent as a
result thereof.

         (d) The Escrow  Agent  shall be  protected  in acting  upon any written
notice, request, waiver, consent, certificate, receipt, authorization,  power of
attorney  or other  paper or  document  which  the  Escrow  Agent in good  faith
believes to be genuine and what it purports to be.

         (e) The Escrow Agent shall not be liable for anything that it may do or
refrain from doing in connection  herewith,  except its own gross  negligence or
willful misconduct.



<PAGE>


         (f) The Escrow Agent may consult with legal counsel in the event of any
dispute or question as to the  construction  of any of the provisions  hereof or
its  duties  hereunder,  and it shall  incur  no  liability  and  shall be fully
protected  in acting in  accordance  with the opinion and  instructions  of such
counsel.

         (g) In the event of any disagreement between any of the parties to this
agreement,  or  between  them or  either  of any of them and any  other  person,
resulting in adverse claims or demands being made in connection with the subject
matter of the escrow,  or in the event that the Escrow Agent,  in good faith, be
in doubt as to what action it should take  hereunder,  the Escrow  Agent may, at
its option, refuse to comply with any claims or demands on it, or refuse to take
any other action hereunder, so long as such disagreement continues or such doubt
exists, and in any such event, the Escrow Agent shall not be or become liable in
any way or to any person for its failure or refusal to act, and the Escrow Agent
shall be entitled to continue so to refrain  from acting until (i) the rights of
all  parties  shall  have  been  fully  and  finally  adjudicated  by a court of
competent jurisdiction, or (ii) all differences shall have been adjusted and all
doubt resolved by agreement among all of the interested persons,  and the Escrow
Agent shall have been  notified  thereof in writing  signed by all such persons.
The rights of the Escrow Agent under this  paragraph are cumulative of all other
rights which it may have by law or otherwise.

         Executed in Dallas, Texas this ___ day of __________, 1999.

BOK FINANCIAL CORPORATION


By: ________________________________                                  
    Stanley A.  Lybarger, Chief Executive Officer


CANYON CREEK FINANCIAL CORPORATION


By: ________________________________                                 
    Charles W. Eisemann, Chairman of the Board




BANK OF TEXAS TRUST COMPANY,
  NATIONAL ASSOCIATION


By: _______________________________                               
    Name:
    Title:

<PAGE>
                                  EXHIBIT "C"


                              EMPLOYMENT AGREEMENT

         This Employment Agreement ("Agreement") is made, effective this ___ day
of ______________,  1999, between Canyon Creek National Bank, a national banking
association  (the "Bank") and Charles O. Rolfe,  Jr., an individual  residing in
Richardson, Texas (the "Executive").

         The Bank and Executive,  in consideration of the promises and covenants
set forth herein (the receipt and adequacy of which is hereby  acknowledged) and
intending to be legally bound hereby, agree as follows:

(1)     Purpose of This Agreement. The purpose of this agreement is as follows:

         (a)      The Bank is a  national  banking  association,  engaged in the
                  banking business in Dallas County, Texas.

         (b)      The  Executive  is currently  serving as  President  and Chief
                  Executive Officer of the Bank. The Executive  currently has no
                  written  agreement of employment  with the Bank, but Executive
                  is currently  receiving salary compensation and other benefits
                  from the Bank  (collectively,  the  "Current  Benefits").  BOK
                  Financial Corporation ("BOKF") is a bank holding company. BOKF
                  owns  indirectly  all of the  issued and  outstanding  capital
                  stock of Bank of Texas,  National Association ("BOT") and BOKF
                  Merger Corporation Number Nine, a Texas corporation.

         (c)      Pursuant  to an  Agreement  and  Plan of  Merger,  dated as of
                  February  19,  1999  (the  "Merger  Agreement"),  among  BOKF,
                  Chaparral  Bancshares,  Inc.  ("Chaparral"),  and  BOK  Merger
                  Corporation  Number Nine, BOKF is acquiring indirect ownership
                  of the Bank (the  "Merger").  Upon and subject to consummation
                  of the  Merger,  the Bank  desires to retain the  services  of
                  Executive,   and  Executive  desires  to  continue  to  render
                  services  to the  Bank.  It is  contemplated  that in the near
                  future, the Bank will be merged into BOT (the "Bank Merger").

         (d)      The  purpose of this  Agreement  is to set forth the terms and
                  conditions   (i)  on  which  the  Bank   shall,   subject   to
                  consummation  of the Merger,  employ  Executive from and after
                  consummation of the Merger and (ii) on which Executive  agrees
                  not to compete with the Bank.

(2)      Employment.  The Bank hereby employs  Executive,  and Executive  hereby
         agrees to work for the Bank, on the following terms and conditions:



          (a)  Until the Bank Merger,  Executive  shall serve as  President  and
               Chief Executive Officer of the Bank,  subject to the direction of
               the Board of  Directors  of the Bank and of the  Chief  Executive
               Officer  of BOT;  provided,  that,  in the  event  of a  conflict
               between the  directions  being given by the Board of Directors of
               the Bank and the Chief Executive Officer of BOT,  Executive shall
               act in accordance  with the  directions of the Board of Directors
               of the Bank. After consummation of the Bank Merger, the Executive
               shall  serve  as  President  of Bank of  Texas -  Richardson  (an
               unincorporated banking division of the Bank).

         (b)      Executive  shall  devote  all  time and  attention  reasonably
                  necessary  to the affairs of the Bank and shall serve the Bank
                  diligently, loyally, and to the best of his ability.

         (c)      Executive shall serve in such other or additional positions as
                  an officer  and/or  director of the Bank as Executive  and the
                  Board  of  Directors  of the Bank  may  mutually  agree or any
                  affiliate  of the Bank as  Executive  and the Chief  Executive
                  Officer  of  BOT  may  mutually  agree;   provided,   however,
                  Executive's residence and place of work shall remain in Dallas
                  County or Collin County, Texas.

         (d)      Notwithstanding  anything  herein to the  contrary,  Executive
                  shall not be precluded from engaging in any charitable, civic,
                  political  or  community   activity  or   membership   in  any
                  professional organization.

(3)      Compensation.  As the sole, full and complete compensation to Executive
         for the performance of all duties of Executive under this Agreement and
         for all services  rendered by Executive to the Bank or to any affiliate
         of the Bank:

         (a)      The Bank shall pay to  Executive  the sum of $150,000 per year
                  payable in installments  in arrears,  less usual and customary
                  payroll  deductions for FICA,  federal and state  withholding,
                  and the  like,  at the  times  and in the  manner in effect in
                  accordance  with the  usual  and  customary  payroll  policies
                  generally  in effect  from  time to time at the Bank  ("Annual
                  Salary").

         (b)      The Bank shall pay and provide to Executive  pension,  thrift,
                  medical  insurance,  disability  insurance plan benefits,  and
                  other  fringe   benefits,   generally  in  effect  for  senior
                  executive   employees   of  BOKF  and  its   affiliates   (the
                  "Additional Benefits").  The pension benefits provided to BOKF
                  employees are fully  described in the official plan  document.
                  Executive   shall  be  credited  with  his  prior  service  at
                  Chaparral  and its  affiliates  in  BOKF's  401k  plan  and in
                  connection  with  the  Additional  Benefits,   other  than  in
                  connection with BOKF's pension plan.


<PAGE>


         (c)      The Bank  may,  from time to time in  Bank's  sole  discretion
                  consistent  with the practices  generally in effect for senior
                  executive  employees  of  BOKF  and  its  affiliates,  pay  or
                  provide, or agree to pay or provide,  Executive a bonus, stock
                  option, or other incentive or performance based  compensation.
                  All such bonus, stock option or other incentive or performance
                  based  compensation,  regardless  of its  nature  (hereinafter
                  called "Performance Compensation") shall not constitute Annual
                  Salary.

         (d)      The  Bank  shall   reimburse   Executive  for  reasonable  and
                  necessary   entertainment,   travel  and  other   expenses  in
                  accordance with BOKF's standard policies in general effect for
                  senior  executive   employees  of  BOKF's   affiliates  (which
                  includes   dues  for  lunch   clubs,   but  does  not  include
                  reimbursement for country club memberships or dues).

         (e)      The Executive shall be allowed vacation,  holidays,  and other
                  employee  benefits not described  above in accordance with the
                  Bank's  standard  policy in general  effect for Bank's  senior
                  executive employees.

         (f)      The  Executive  shall be  considered  for the award of options
                  pursuant  to BOKF's  stock  option  plan on the same  basis as
                  other senior executives of BOKF and its affiliates.

         (g)      Upon  consummation  of the Merger,  the Bank shall transfer to
                  Executive  ownership of that certain  1997  Cadillac  Sedan De
                  Ville  automobile  currently  being  driven by  Executive.  In
                  addition,  it is understood  and agreed that  Executive owns a
                  membership in the Canyon Creek Country Club, although the Bank
                  currently pays the dues owing on such membership.

         (h)      Executive  hereby agrees to accept the foregoing  compensation
                  from and after the date of  consummation of the Merger in lieu
                  of all Current  Benefits  and as the sole,  full and  complete
                  compensation to Executive for the performance of all duties of
                  Executive  under this Agreement and for all services  rendered
                  by Executive to the Bank or any affiliate of the Bank.

(4)      Term of this  Agreement.  The term of this Agreement (the "Term") shall
         commence  (the  "Commencement")  as of the  commencement  of the  first
         pay-roll period immediately  preceding the effective date of the Merger
         and shall terminate on the third anniversary date of the Commencement.

(5)  Termination of This Agreement.  Notwithstanding the provisions of paragraph
     4 of this  Agreement,  this  Agreement  may be  terminated on the following
     terms and conditions:

         (a)      Termination  by Bank for Cause.  The Bank may  terminate  this
                  Agreement for cause on the following terms and conditions:



<PAGE>


                  (i)      The Bank shall be deemed to have  cause to  terminate
                           Executive's  employment  only in one of the following
                           events:

                           (A)      The Executive shall, after one prior written
                                    notice,   willfully  fail  to  substantially
                                    perform his obligations under this Agreement
                                    (it being  understood  that any such failure
                                    resulting from Executive's incapacity due to
                                    physical  or  mental  illness  shall  not be
                                    deemed willful);

                           (B)      Any  intentional  act which is  intended  by
                                    Executive to materially injure the Bank;

                           (C)      Any criminal act involving moral turpitude;

                           (D)      Any dishonest or fraudulent act; or,

                    (E)  Any refusal to obey written orders or  instructions  of
                         the Board of  Directors  of the  Bank,  after one prior
                         written notice,  unless such instructions would require
                         Executive  to  commit an  illegal  act,  could  subject
                         Executive   to  personal   liability,   would   require
                         Executive  to violate the terms of this  Agreement,  or
                         would otherwise be  inconsistent  with the duties of an
                         officer of a national banking association.

               (ii) The  Bank  shall  be  deemed  to  have  cause  to  terminate
                    Executive's  employment  only when a majority of the members
                    of the Board of  Directors  of the Bank finds  that,  in the
                    good faith opinion of such majority, Executive committed any
                    of the acts set  forth in  clauses  (A)  through  (E) of the
                    preceding subparagraph, such finding to have been made after
                    at least ten (10) business  days' notice to Executive and an
                    opportunity for Executive,  together with his counsel, to be
                    heard  before  such  majority.  The  determination  of  such
                    majority, made as set forth above, shall be binding upon the
                    Bank and Executive, absent bad faith or willful misconduct.



<PAGE>


                    (iii)The effective date of a termination  for cause shall be
                         the date of the  action of such  majority  finding  the
                         termination  was  with  cause.  In the  event  the Bank
                         terminates this Agreement for cause, (A) the Bank shall
                         pay Executive  Executive's  then Annual Salary through,
                         but not beyond,  the effective date of the termination,
                         (B) Executive  shall  receive  those  benefits that are
                         accrued  through but not beyond the  effective  date of
                         such termination which are thereafter payable under the
                         terms and provisions of benefit plans then in effect in
                         accordance with paragraph 3 above.

         (b)      Termination By Executive. The Executive may, at any time after
                  the first  anniversary date of the consummation of the Merger,
                  terminate   this   Agreement  on  the   following   terms  and
                  conditions:

                  (i)      The Executive may give written  notice of termination
                           to the Bank.  The  termination  shall be effective on
                           the  fifteenth  (15th)  business  day  following  the
                           notice of termination.

                  (ii)     Upon termination by Executive, the Bank shall have no
                           obligation to Executive  under this Agreement  beyond
                           the  effective  date  of the  termination;  provided,
                           however,  that Executive shall be entitled to receive
                           any benefits,  insured or otherwise,  that  Executive
                           would  otherwise be able to receive under any benefit
                           plan of the Bank of which  Executive is a beneficiary
                           in accordance with paragraph 3.

         (c)      Termination after Bank Merger.  Either party to this Agreement
                  may, at any time after the ninetieth (90th) day after the Bank
                  Merger,  terminate this  Agreement on the following  terms and
                  conditions:

                  (i)      The  party  terminating  this  Agreement  shall  give
                           written  notice of  termination  to the  other  party
                           hereto.  The  termination  shall be  effective on the
                           fifteenth (15th) business day following the notice of
                           termination.

                  (ii)     Upon termination pursuant to this paragraph 5(c), the
                           obligations  of the  Executive  pursuant to paragraph
                           8(a) and the Bank  pursuant to  paragraph  8(b) shall
                           continue for the remaining period of  non-competition
                           set forth in paragraph 8(a).



<PAGE>


(6)      Death of Executive.  In the event of Executive's  death during the term
         of  this  Agreement,  his  estate,  legal  representatives,   or  named
         beneficiaries (as set forth in a writing by Executive  delivered to the
         Bank prior to death) (i) shall be paid  Executive's  Annual  Salary and
         Additional  Benefits for a period equal to the lesser of the  remaining
         term  of  this  agreement  or six  (6)  months  following  the  date of
         Executive's  death and (ii)  shall  receive  those  benefits  which are
         accrued  through the date six (6) months after the date of  Executive's
         death and which are  thereafter  payable under the terms and provisions
         of the  benefit  plans then in effect in  accordance  with  paragraph 3
         above.

(7)      Provisions  Respecting  Illness.  In the event  Executive  is unable to
         perform his duties  under this  Agreement  on a  full-time  basis for a
         period of six (6)  consecutive  months by  reason of  illness  or other
         physical or mental disability, and at or before the end of such period,
         Executive  does not return to work on a full-time  basis,  the Bank may
         terminate this  Agreement  without  further or additional  compensation
         being due  Executive  from the Bank except  annual  salary and benefits
         accrued through the date of such  termination  under benefit plans then
         in effect in accordance with paragraph 3 above.

(8)  Agreement Not to Compete.  The provisions of this paragraph 8 are hereafter
     called the "Non-Competition Agreement".

     (a)  Executive  agrees that for a period of 3 years after the  commencement
          of this Agreement, Executive shall not directly or indirectly (whether
          as an officer, director,  employee,  partner, 5% stockholder or agent)
          (i) engage in the banking  business  generally  or in any  business in
          which the Bank has,  as of the date of such  termination  engaged,  in
          Dallas  County or Collin  County,  Texas,  or (ii) solicit the banking
          business  of any  clients  of Bank or  Bank's  affiliates  or  solicit
          employees of Bank or Bank's  affiliates  to seek  employment  with any
          person or entity engaged in the financial services business except the
          Bank and its affiliates, whether, in either case, such solicitation is
          made within or without the area  described in this paragraph 8, except
          that this Non-Competition  Agreement shall not be binding on Executive
          if the Bank shall have breached its obligations under this Agreement.

     (b)  Except in the event of the termination of Executive's  employment with
          the Bank  pursuant to the  provisions  of paragraph  5(a) or paragraph
          5(b) of this  Agreement,  the Bank  shall pay  Executive  during  such
          period of non-competition (i) 100% of his Annual Salary at the time of
          termination,  for each full calendar month payable on the first day of
          each calendar  month  commencing  with the first calendar month of the
          period of non-competition  and (ii) the Bank shall continue in effect,
          and provide to Executive,  the same or similar  medical  insurance and
          disability  insurance  as provided to Executive  immediately  prior to
          such termination.

     (c)  Executive  agrees that (i) this  Non-Competition  Agreement is entered
          into in  connection  with  the  sale to  BOKF of the  goodwill  of the
          business  of  the  Bank,   (ii)   Executive  is   receiving   valuable
          consideration in the Merger for this Non-Competition  Agreement, (iii)
          the  restrictions  imposed  upon  Executive  by  this  Non-Competition
          Agreement  are  essential  and  necessary to ensure BOKF  acquires the
          goodwill  of the  Bank,  and  (iv)  all  the  restrictions  (including
          particularly the time and geographical  limitations) set forth in this
          Non-Competition Agreement are fair and reasonable.


<PAGE>



     (d)  Executive  agrees  that  any  remedy  at law  for any  breach  of this
          Non-Competition Agreement would be inadequate and, in the event of any
          such  breach,  the  Bank  shall  be  entitled  to both  immediate  and
          permanent  injunctive relief without the necessity of posting any bond
          therefor to preclude  any such breach (in  addition to any remedies of
          law which the Bank may be entitled).

(9) Miscellaneous Provisions. The following miscellaneous provisions shall apply
to this Agreement:

     (a)  All  notices  or  advices  required  or  permitted  to be  given by or
          pursuant  to this  Agreement,  shall  be given  in  writing.  All such
          notices and advices shall be (i) delivered personally,  (ii) delivered
          by facsimile or delivered by U.S. Registered or Certified Mail, Return
          Receipt Requested mail, or (iii) delivered for overnight delivery by a
          nationally  recognized  overnight  courier  service.  Such notices and
          advices shall be deemed to have been given (i) the first  business day
          following  the  date  of  delivery  if  delivered   personally  or  by
          facsimile,  (ii) on the  third  business  day  following  the  date of
          mailing if mailed by U.S. Registered or Certified Mail, Return Receipt
          Requested,  or (iii) on the date of receipt if delivered for overnight
          delivery by a nationally  recognized  overnight  courier service.  All
          such notices and advices and all other communications  related to this
          Agreement shall be given as follows:

                  If to the Bank:

                                    BOK Financial Corporation
                                    P.O. Box 2300
                                    Tulsa, OK 74192
                                    Attention: Stanley A. Lybarger
                                    Telecopy No.: (918) 588-6888

                                    and

                                    Canyon Creek National Bank
                                    333 West Campbell Road
                                    Richardson, Texas 75080
                                    Attention:  Chairman of the Board
                                    Telecopy No.:  (972) 234-8641



<PAGE>


                                    With a Copy to:

                                    Bank of Texas, N. A.
                                    5956 Sherry Lane, Suite 1800
                                    Dallas, Texas   75225
                   Attention: Mr. C. Fred Ball, Jr., President
                          Telecopy No.: (214) 521-9072

                                    and

                                    Frederic Dorwart
                                    Old City Hall
                                    124 East Fourth Street
                                    Tulsa, OK 74103-5010
                                    Telecopy No.: (918) 583-8251

                  If to Executive:

                                    Mr. Charles O. Rolfe, Jr.
                                    ================================
                                    --------------------------------
                                    Telecopy No.: ___________________

                  or to such other  address as the party may have  furnished  to
                  the other parties in accordance  herewith,  except that notice
                  of change of addresses shall be effective only upon receipt.

         (b)      This Agreement is made and executed in Dallas  County,  Texas,
                  and all  actions  or  proceedings  with  respect  to,  arising
                  directly or indirectly in connection  with, out of, related to
                  or from this  Agreement,  shall be litigated in courts  having
                  situs in Dallas County, Texas.

         (c)      This Agreement  shall be subject to, and interpreted by and in
                  accordance   with,  the  laws   (excluding   conflict  of  law
                  provisions) of the State of Texas.

         (d)      This  Agreement  is  the  entire   Agreement  of  the  parties
                  respecting  the  subject  matter  hereof.  There  are no other
                  agreements,  representations  or  warranties,  whether oral or
                  written,  respecting  the  subject  matter  hereof,  except as
                  stated in this Agreement.

         (e)      This  Agreement,  and all the  provisions  of this  Agreement,
                  shall be deemed drafted by all of the parties hereto.



<PAGE>


         (f)      This  Agreement  shall  not  be  interpreted  strictly  for or
                  against  any  party,  but solely in  accordance  with the fair
                  meaning of the  provisions  hereof to effectuate  the purposes
                  and interest of this Agreement.

         (g)      Each party hereto has entered into this Agreement based solely
                  upon the agreements,  representations and warranties expressly
                  set forth herein and upon his own knowledge and investigation.
                  Neither party has relied upon any  representation  or warranty
                  of any other party hereto except any such  representations  or
                  warranties as are expressly set forth herein.

         (h)      Each of the persons  signing below on behalf of a party hereto
                  represents  and  warrants  that he or she has  full  requisite
                  power and  authority to execute and deliver this  Agreement on
                  behalf of the  parties  for whom he or she is  signing  and to
                  bind such party to the terms and conditions of this Agreement.

         (i)      This Agreement may be executed in counterparts,  each of which
                  shall be deemed  an  original.  This  Agreement  shall  become
                  effective  only  when all of the  parties  hereto  shall  have
                  executed the original or  counterpart  hereof.  This Agreement
                  may be executed and delivered by a facsimile transmission of a
                  counterpart signature page hereof.

         (j)      In any  action  brought  by a  party  hereto  to  enforce  the
                  obligations of any other party hereto,  the  prevailing  party
                  shall be entitled to collect from the  opposing  party to such
                  action such party's reasonable  litigation costs and attorneys
                  fees and expenses  (including court costs,  reasonable fees of
                  accountants and experts,  and other expenses incidental to the
                  litigation).

         (k)      This  Agreement  shall be binding  upon and shall inure to the
                  benefit of the parties  and their  respective  successors  and
                  assigns.  The Bank agrees that if it merges,  consolidates  or
                  combines with any other  business  entity,  it shall cause the
                  succeeding or  continuing  corporation  or business  entity to
                  expressly assume and confirm in writing the obligations of the
                  Bank under this Agreement.

         (l)      This is not a third party  beneficiary  contract,  except BOKF
                  (including  each  affiliate  thereof)  shall be a third  party
                  beneficiary of this Agreement.  No person or entity other than
                  a party signing this Agreement and those designated as a third
                  party  beneficiary  herein  shall have any  rights  under this
                  Agreement.

         (m)      This  Agreement  may be amended or modified  only in a writing
                  which specifically references this Agreement.



<PAGE>


         (n)      A party to this  Agreement  may decide or fail to require full
                  or timely  performance  of any  obligation  arising under this
                  Agreement.  The  decision  or  failure  of a party  hereto  to
                  require full or timely  performance of any obligation  arising
                  under  this  Agreement  (whether  on a single  occasion  or on
                  multiple  occasions)  shall not be deemed a waiver of any such
                  obligation.  No such  decisions or failures shall give rise to
                  any claim of estoppel, laches, course of dealing, amendment of
                  this  Agreement by course of dealing,  or other defense of any
                  nature to any obligation arising hereunder.

         (o)      In  the  event  any  provision  of  this  Agreement,   or  the
                  application  of  such  provision  to  any  person  or  set  of
                  circumstances, shall be determined to be invalid, unlawful, or
                  unenforceable  to any extent for any reason,  the remainder of
                  this  Agreement,  and the  application  of such  provision  to
                  persons  or  circumstances  other than those as to which it is
                  determined to be invalid,  unlawful,  or unenforceable,  shall
                  not be affected and shall  continue to be  enforceable  to the
                  fullest extent permitted by law.

         Dated and effective the date first set forth above.

                                                      CANYON CREEK NATIONAL BANK


                                                      By: _____________________
                                                          Charles W. Eisemann,
                                                          Chairman of the Board

                                                          ______________________
                                                          Charles O. Rolfe, Jr.


<PAGE>
                                  EXHIBIT "D"
                              EMPLOYMENT AGREEMENT

         This Employment Agreement ("Agreement") is made, effective this ___ day
of ______________,  1999, between Canyon Creek National Bank, a national banking
association  (the  "Bank")  and John B.  Whisenant,  an  individual  residing in
McKinney, Texas (the "Executive").

         The Bank and Executive,  in consideration of the promises and covenants
set forth herein (the receipt and adequacy of which is hereby  acknowledged) and
intending to be legally bound hereby, agree as follows:

(1)    Purpose of This Agreement.  The purpose of this agreement is as follows:

         (a)      The Bank is a  national  banking  association,  engaged in the
                  banking business in Dallas County, Texas.

         (b)      The  Executive  is  currently  serving  as  President  of  the
                  McKinney  Branch of the Bank.  The Executive  currently has no
                  written  agreement of employment  with the Bank, but Executive
                  is currently  receiving salary compensation and other benefits
                  from the Bank  (collectively,  the  "Current  Benefits").  BOK
                  Financial Corporation ("BOKF") is a bank holding company. BOKF
                  owns  indirectly  all of the  issued and  outstanding  capital
                  stock of Bank of Texas,  National Association ("BOT") and BOKF
                  Merger Corporation Number Nine, a Texas corporation.

         (c)      Pursuant  to an  Agreement  and  Plan of  Merger,  dated as of
                  February  19,  1999  (the  "Merger  Agreement"),  among  BOKF,
                  Chaparral  Bancshares,  Inc.  ("Chaparral"),  and  BOK  Merger
                  Corporation  Number Nine, BOKF is acquiring indirect ownership
                  of the Bank (the  "Merger").  Upon and subject to consummation
                  of the  Merger,  the Bank  desires to retain the  services  of
                  Executive,   and  Executive  desires  to  continue  to  render
                  services  to the  Bank.  It is  contemplated  that in the near
                  future, the Bank will be merged into BOT (the "Bank Merger").

         (d)      The  purpose of this  Agreement  is to set forth the terms and
                  conditions   (i)  on  which  the  Bank   shall,   subject   to
                  consummation  of the Merger,  employ  Executive from and after
                  consummation of the Merger and (ii) on which Executive  agrees
                  not to compete with the Bank.

(2)      Employment.  The Bank hereby employs  Executive,  and Executive  hereby
         agrees to work for the Bank, on the following terms and conditions:


<PAGE>
                                                

          (a)  Until the Bank Merger,  Executive shall serve as President of the
               McKinney  Branch of the Bank,  subject  to the  direction  of the
               Board of Directors of the Bank and of the Chief Executive Officer
               of BOT;  provided,  that, in the event of a conflict  between the
               directions  being given by the Board of Directors of the Bank and
               the  Chief  Executive  Officer  of BOT,  Executive  shall  act in
               accordance  with the  directions of the Board of Directors of the
               Bank. After  consummation of the Bank Merger, the Executive shall
               serve as President of Bank of Texas - McKinney (an unincorporated
               banking division of the Bank).

         (b)      Executive  shall  devote  all  time and  attention  reasonably
                  necessary  to the affairs of the Bank and shall serve the Bank
                  diligently, loyally, and to the best of his ability.

         (c)      Executive shall serve in such other or additional positions as
                  an officer  and/or  director of the Bank as Executive  and the
                  Board  of  Directors  of the Bank  may  mutually  agree or any
                  affiliate  of the Bank as  Executive  and the Chief  Executive
                  Officer  of  BOT  may  mutually  agree;   provided,   however,
                  Executive's residence and place of work shall remain in Collin
                  County, Texas.

         (d)      Notwithstanding  anything  herein to the  contrary,  Executive
                  shall not be precluded from engaging in any charitable, civic,
                  political  or  community   activity  or   membership   in  any
                  professional organization.

(3)      Compensation.  As the sole, full and complete compensation to Executive
         for the performance of all duties of Executive under this Agreement and
         for all services  rendered by Executive to the Bank or to any affiliate
         of the Bank:

         (a)      The Bank shall pay to  Executive  the sum of $120,000 per year
                  payable in installments  in arrears,  less usual and customary
                  payroll  deductions for FICA,  federal and state  withholding,
                  and the  like,  at the  times  and in the  manner in effect in
                  accordance  with the  usual  and  customary  payroll  policies
                  generally  in effect  from  time to time at the Bank  ("Annual
                  Salary").

          (b)  The Bank shall pay and  provide  to  Executive  pension,  thrift,
               medical insurance,  disability insurance plan benefits, and other
               fringe  benefits,   generally  in  effect  for  senior  executive
               employees of BOKF and its affiliates (the "Additional Benefits").
               The  pension  benefits  provided  to  BOKF  employees  are  fully
               described  in the  official  plan  document.  Executive  shall be
               credited with his prior  service at Chaparral and its  affiliates
               in  BOKF's  401k  plan  and in  connection  with  the  Additional
               Benefits, other than in connection with BOKF's pension plan.


<PAGE>


         (c)      The Bank  may,  from time to time in  Bank's  sole  discretion
                  consistent  with the practices  generally in effect for senior
                  executive  employees  of  BOKF  and  its  affiliates,  pay  or
                  provide, or agree to pay or provide,  Executive a bonus, stock
                  option, or other incentive or performance based  compensation.
                  All such bonus, stock option or other incentive or performance
                  based  compensation,  regardless  of its  nature  (hereinafter
                  called "Performance Compensation") shall not constitute Annual
                  Salary.

         (d)      The  Bank  shall   reimburse   Executive  for  reasonable  and
                  necessary   entertainment,   travel  and  other   expenses  in
                  accordance with BOKF's standard policies in general effect for
                  senior  executive   employees  of  BOKF's   affiliates  (which
                  includes   dues  for  lunch   clubs,   but  does  not  include
                  reimbursement for country club memberships or dues).

         (e)      The Executive shall be allowed vacation,  holidays,  and other
                  employee  benefits not described  above in accordance with the
                  Bank's  standard  policy in general  effect for Bank's  senior
                  executive employees.

         (f)      The  Executive  shall be  considered  for the award of options
                  pursuant  to BOKF's  stock  option  plan on the same  basis as
                  other senior executives of BOKF and its affiliates.

         (g)      Executive  hereby agrees to accept the foregoing  compensation
                  from and after the date of  consummation of the Merger in lieu
                  of all Current  Benefits  and as the sole,  full and  complete
                  compensation to Executive for the performance of all duties of
                  Executive  under this Agreement and for all services  rendered
                  by Executive to the Bank or any affiliate of the Bank.

(4)      Term of this  Agreement.  The term of this Agreement (the "Term") shall
         commence  (the  "Commencement")  as of the  commencement  of the  first
         pay-roll period immediately  preceding the effective date of the Merger
         and shall terminate on the second anniversary date of the Commencement.

(5)  Termination of This Agreement.  Notwithstanding the provisions of paragraph
     4 of this  Agreement,  this  Agreement  may be  terminated on the following
     terms and conditions:

     (a)  Termination  by Bank for Cause.  The Bank may terminate this Agreement
          for cause on the following terms and conditions:

          (i)  The Bank shall be deemed to have cause to  terminate  Executive's
               employment only in one of the following events:


<PAGE>

               (A)  The  Executive  shall,   after  one  prior  written  notice,
                    willfully  fail to  substantially  perform  his  obligations
                    under  this  Agreement  (it being  understood  that any such
                    failure   resulting  from  Executive's   incapacity  due  to
                    physical or mental illness shall not be deemed willful);

               (B)  Any  intentional  act  which is  intended  by  Executive  to
                    materially injure the Bank;

               (C)  Any criminal act involving moral turpitude;

               (D)  Any dishonest or fraudulent act; or,

               (E)  Any refusal to obey written  orders or  instructions  of the
                    Board of  Directors  of the Bank,  after  one prior  written
                    notice,  unless such instructions would require Executive to
                    commit an illegal act,  could subject  Executive to personal
                    liability,  would require  Executive to violate the terms of
                    this Agreement,  or would otherwise be inconsistent with the
                    duties of an officer of a national banking association.

                    (ii) The Bank  shall be  deemed to have  cause to  terminate
                         Executive's  employment  only  when a  majority  of the
                         members  of the Board of  Directors  of the Bank  finds
                         that,  in the  good  faith  opinion  of such  majority,
                         Executive  committed  any  of the  acts  set  forth  in
                         clauses (A) through (E) of the preceding  subparagraph,
                         such  finding to have been made after at least ten (10)
                         business  days' notice to Executive and an  opportunity
                         for Executive,  together with his counsel,  to be heard
                         before  such  majority.   The   determination  of  such
                         majority,  made as set forth  above,  shall be  binding
                         upon  the  Bank  and  Executive,  absent  bad  faith or
                         willful misconduct.

                    (iii)The effective date of a termination  for cause shall be
                         the date of the  action of such  majority  finding  the
                         termination  was  with  cause.  In the  event  the Bank
                         terminates this Agreement for cause, (A) the Bank shall
                         pay Executive  Executive's  then Annual Salary through,
                         but not beyond,  the effective date of the termination,
                         (B) Executive  shall  receive  those  benefits that are
                         accrued  through but not beyond the  effective  date of
                         such termination which are thereafter payable under the
                         terms and provisions of benefit plans then in effect in
                         accordance with paragraph 3 above.


<PAGE>


     (b)  Termination  By  Executive.  The  Executive  may, at anytime after the
          first  anniversary date of the  consummation of the Merger,  terminate
          this Agreement on the following terms and conditions:

          (i)  The Executive may give written notice of termination to the Bank.
               The  termination  shall  be  effective  on the  fifteenth  (15th)
               business day following the notice of termination.

          (ii) Upon termination by Executive, the Executive shall be entitled to
               receive any benefits,  insured or otherwise, that Executive would
               otherwise  be able to receive  under any benefit plan of the Bank
               of which  Executive is a beneficiary in accordance with paragraph
               3.

(6)      Death of Executive.  In the event of Executive's  death during the term
         of  this  Agreement,  his  estate,  legal  representatives,   or  named
         beneficiaries (as set forth in a writing by Executive  delivered to the
         Bank prior to death) (i) shall be paid  Executive's  Annual  Salary and
         Additional  Benefits for a period equal to the lesser of the  remaining
         term  of  this  agreement  or six  (6)  months  following  the  date of
         Executive's  death and (ii)  shall  receive  those  benefits  which are
         accrued  through the date six (6) months after the date of  Executive's
         death and which are  thereafter  payable under the terms and provisions
         of the  benefit  plans then in effect in  accordance  with  paragraph 3
         above.

(7)      Provisions  Respecting  Illness.  In the event  Executive  is unable to
         perform his duties  under this  Agreement  on a  full-time  basis for a
         period of six (6)  consecutive  months by  reason of  illness  or other
         physical or mental disability, and at or before the end of such period,
         Executive  does not return to work on a full-time  basis,  the Bank may
         terminate this  Agreement  without  further or additional  compensation
         being due  Executive  from the Bank except  annual  salary and benefits
         accrued through the date of such  termination  under benefit plans then
         in effect in accordance with paragraph 3 above.

(8)  Agreement Not to Compete.  The provisions of this paragraph 8 are hereafter
     called the "Non-Competition Agreement".



<PAGE>


     (a)  Executive  agrees that for a period of 12 months after the termination
          of  Executive's   employment  with  Bank,  for  whatever  reason  such
          employment may cease and whether for cause or without cause, Executive
          shall not  directly or  indirectly  (whether as an officer,  director,
          employee,  partner, 5% stockholder or agent) (i) engage in the banking
          business generally or in any business in which the Bank has, as of the
          date of such  termination  engaged,  in Collin County,  Texas, or (ii)
          solicit  the  banking  business  of any  clients  of  Bank  or  Bank's
          affiliates or solicit  employees of Bank or Bank's  affiliates to seek
          employment with any person or entity engaged in the financial services
          business except the Bank and its affiliates,  whether, in either case,
          such solicitation is made within or without the area described in this
          paragraph 8, except that this  Non-Competition  Agreement shall not be
          binding on Executive if the Bank shall have  breached its  obligations
          under this Agreement.

     (b)  The Bank shall pay Executive during such period of non-competition (i)
          50% of his  Annual  Salary at the time of  termination,  for each full
          calendar  month  payable  on the  first  day of  each  calendar  month
          commencing   with  the  first   calendar   month  of  the   period  of
          non-competition  and (ii) the  Bank  shall  continue  in  effect,  and
          provide  to  Executive,  the same or  similar  medical  insurance  and
          disability  insurance  as provided to Executive  immediately  prior to
          such termination.

     (c)  Executive  agrees that (i) this  Non-Competition  Agreement is entered
          into in  connection  with  the  sale to  BOKF of the  goodwill  of the
          business  of  the  Bank,   (ii)   Executive  is   receiving   valuable
          consideration in the Merger for this Non-Competition  Agreement, (iii)
          the  restrictions  imposed  upon  Executive  by  this  Non-Competition
          Agreement  are  essential  and  necessary to ensure BOKF  acquires the
          goodwill  of the  Bank,  and  (iv)  all  the  restrictions  (including
          particularly the time and geographical  limitations) set forth in this
          Non-Competition Agreement are fair and reasonable.

     (d)  Executive  agrees  that  any  remedy  at law  for any  breach  of this
          Non-Competition Agreement would be inadequate and, in the event of any
          such  breach,  the  Bank  shall  be  entitled  to both  immediate  and
          permanent  injunctive relief without the necessity of posting any bond
          therefor to preclude  any such breach (in  addition to any remedies of
          law which the Bank may be entitled).

(9)  Miscellaneous  Provisions.  The following  miscellaneous  provisions  shall
     apply to this Agreement:

     (a)  All  notices  or  advices  required  or  permitted  to be  given by or
          pursuant  to this  Agreement,  shall  be given  in  writing.  All such
          notices and advices shall be (i) delivered personally,  (ii) delivered
          by facsimile or delivered by U.S. Registered or Certified Mail, Return
          Receipt Requested mail, or (iii) delivered for overnight delivery by a
          nationally  recognized  overnight  courier  service.  Such notices and
          advices shall be deemed to have been given (i) the first  business day
          following  the  date  of  delivery  if  delivered   personally  or  by
          facsimile,  (ii) on the  third  business  day  following  the  date of
          mailing if mailed by U.S. Registered or Certified Mail, Return Receipt
          Requested,  or (iii) on the date of receipt if delivered for overnight
          delivery by a nationally  recognized  overnight  courier service.  All
          such notices and advices and all other communications  related to this
          Agreement shall be given as follows:

                  If to the Bank:

<PAGE>


                                    BOK Financial Corporation
                                    P.O. Box 2300
                                    Tulsa, OK 74192
                                    Attention: Stanley A. Lybarger
                                    Telecopy No.: (918) 588-6888

                                    and

                                    Canyon Creek National Bank
                                    333 West Campbell Road
                                    Richardson, Texas 75080
                                    Attention:  Chairman of the Board
                                    Telecopy No.:  (972) 234-8641

                                    With a Copy to:

                                    Bank of Texas, N.A.
                                    5956 Sherry Lane, Suite 1800
                                    Dallas, Texas   75225
                   Attention: Mr. C. Fred Ball, Jr., President
                          Telecopy No.: (214) 521-9072

                                    and

                                    Frederic Dorwart
                                    Old City Hall
                                    124 East Fourth Street
                                    Tulsa, OK 74103-5010
                                    Telecopy No.: (918) 583-8251

                  If to Executive:

                                    John B. Whisenant
                                    --------------------------------
                                    --------------------------------
                                    Telecopy No.: ___________________

                  or to such other  address as the party may have  furnished  to
                  the other parties in accordance  herewith,  except that notice
                  of change of addresses shall be effective only upon receipt.

         (b)      This Agreement is made and executed in Dallas  County,  Texas,
                  and all  actions  or  proceedings  with  respect  to,  arising
                  directly or indirectly in connection  with, out of, related to
                  or from this  Agreement,  shall be litigated in courts  having
                  situs in Dallas County, Texas.


<PAGE>


         (c)      This Agreement  shall be subject to, and interpreted by and in
                  accordance   with,  the  laws   (excluding   conflict  of  law
                  provisions) of the State of Texas.

         (d)      This  Agreement  is  the  entire   Agreement  of  the  parties
                  respecting  the  subject  matter  hereof.  There  are no other
                  agreements,  representations  or  warranties,  whether oral or
                  written,  respecting  the  subject  matter  hereof,  except as
                  stated in this Agreement.

         (e)      This  Agreement,  and all the  provisions  of this  Agreement,
                  shall be deemed drafted by all of the parties hereto.

         (f)      This  Agreement  shall  not  be  interpreted  strictly  for or
                  against  any  party,  but solely in  accordance  with the fair
                  meaning of the  provisions  hereof to effectuate  the purposes
                  and interest of this Agreement.

         (g)      Each party hereto has entered into this Agreement based solely
                  upon the agreements,  representations and warranties expressly
                  set forth herein and upon his own knowledge and investigation.
                  Neither party has relied upon any  representation  or warranty
                  of any other party hereto except any such  representations  or
                  warranties as are expressly set forth herein.

         (h)      Each of the persons  signing below on behalf of a party hereto
                  represents  and  warrants  that he or she has  full  requisite
                  power and  authority to execute and deliver this  Agreement on
                  behalf of the  parties  for whom he or she is  signing  and to
                  bind such party to the terms and conditions of this Agreement.

         (i)      This Agreement may be executed in counterparts,  each of which
                  shall be deemed  an  original.  This  Agreement  shall  become
                  effective  only  when all of the  parties  hereto  shall  have
                  executed the original or  counterpart  hereof.  This Agreement
                  may be executed and delivered by a facsimile transmission of a
                  counterpart signature page hereof.

         (j)      In any  action  brought  by a  party  hereto  to  enforce  the
                  obligations of any other party hereto,  the  prevailing  party
                  shall be entitled to collect from the  opposing  party to such
                  action such party's reasonable  litigation costs and attorneys
                  fees and expenses  (including court costs,  reasonable fees of
                  accountants and experts,  and other expenses incidental to the
                  litigation).

         (k)      This  Agreement  shall be binding  upon and shall inure to the
                  benefit of the parties  and their  respective  successors  and
                  assigns.  The Bank agrees that if it merges,  consolidates  or
                  combines with any other  business  entity,  it shall cause the
                  succeeding or  continuing  corporation  or business  entity to
                  expressly assume and confirm in writing the obligations of the
                  Bank under this Agreement.



<PAGE>


         (l)      This is not a third party  beneficiary  contract,  except BOKF
                  (including  each  affiliate  thereof)  shall be a third  party
                  beneficiary of this Agreement.  No person or entity other than
                  a party signing this Agreement and those designated as a third
                  party  beneficiary  herein  shall have any  rights  under this
                  Agreement.

         (m)      This  Agreement  may be amended or modified  only in a writing
                  which specifically references this Agreement.

         (n)      A party to this  Agreement  may decide or fail to require full
                  or timely  performance  of any  obligation  arising under this
                  Agreement.  The  decision  or  failure  of a party  hereto  to
                  require full or timely  performance of any obligation  arising
                  under  this  Agreement  (whether  on a single  occasion  or on
                  multiple  occasions)  shall not be deemed a waiver of any such
                  obligation.  No such  decisions or failures shall give rise to
                  any claim of estoppel, laches, course of dealing, amendment of
                  this  Agreement by course of dealing,  or other defense of any
                  nature to any obligation arising hereunder.

         (o)      In  the  event  any  provision  of  this  Agreement,   or  the
                  application  of  such  provision  to  any  person  or  set  of
                  circumstances, shall be determined to be invalid, unlawful, or
                  unenforceable  to any extent for any reason,  the remainder of
                  this  Agreement,  and the  application  of such  provision  to
                  persons  or  circumstances  other than those as to which it is
                  determined to be invalid,  unlawful,  or unenforceable,  shall
                  not be affected and shall  continue to be  enforceable  to the
                  fullest extent permitted by law.

         Dated and effective the date first set forth above.

                                                CANYON CREEK NATIONAL BANK


                                                 By: __________________________
                                                     Charles W. Eisemann,
                                                     Chairman of the Board



                                                     __________________________
                                                     John B. Whisenant

<PAGE>

                                  EXHIBIT "E"

                            NONCOMPETITION AGREEMENT

         This  Noncompetition  Agreement (the  "Agreement")  is made and entered
into as of the ______ day of  ___________,  1999,  by and between  Canyon  Creek
National  Bank,  a national  banking  association  (the  "Bank")  and Charles W.
Eisemann, an individual resident of the State of Texas ("Eisemann").

                                    RECITALS

         WHEREAS,  pursuant  to an  Agreement  and Plan of  Merger,  dated as of
February  19, 1999 (the "Merger  Agreement"),  among BOK  Financial  Corporation
("BOKF"),  Chaparral  Bancshares,  Inc., and BOK Merger Corporation Number Nine,
BOKF is acquiring indirect ownership of the Bank (the "Merger"); and

         WHEREAS,   in  connection  with   consummation   of  the   transactions
contemplated by the Merger Agreement, the Bank and Eisemann have agreed to enter
into this Noncompetition Agreement.

         NOW,  THEREFORE,  in consideration of the premises and mutual covenants
contained herein and intending to be legally bound hereby, the Bank and Eisemann
agree as follows:

         1.       Noncompete Covenants.

                  (a)  Eisemann  agrees that for a period of 24 months after the
date of  consummation  of the Merger,  Eisemann shall not directly or indirectly
(whether as an officer,  director,  employee,  partner, 5% stockholder or agent)
(i) engage in the banking  business  generally  or in any  business in which the
Bank has, as of the date of the Merger engaged, in Dallas County, Texas, or (ii)
solicit the banking  business  of any  clients of Bank or Bank's  affiliates  or
solicit  employees  of Bank or Bank's  affiliates  to seek  employment  with any
person or entity engaged in the financial  services business except the Bank and
its affiliates,  whether,  in either case,  such  solicitation is made within or
without the area described in this  paragraph,  except that this Agreement shall
not be binding on Eisemann if the Bank shall have breached its obligations under
this Agreement.

                  (b) For and in consideration of his obligations hereunder, the
Bank shall pay  Eisemann  $1,000 in a lump sum payment to be made as of the time
the Merger is effective.

                  (c) Eisemann agrees that (i) this Noncompetition  Agreement is
entered into in connection with the sale to BOKF of the goodwill of the business
of the Bank, (ii) Eisemann is receiving valuable consideration in the Merger for
this Noncompetition  Agreement,  (iii) the restrictions imposed upon Eisemann by
this  Noncompetition  Agreement  are  essential  and  necessary  to ensure  BOKF
acquires  the  goodwill of the Bank,  and (iv) all the  restrictions  (including
particularly  the  time  and   geographical   limitations)  set  forth  in  this
Noncompetition Agreement are fair and reasonable.


         2.  Injunctive  Relief.  Eisemann agrees that any remedy at law for any
breach of this Noncompetition Agreement would be inadequate and, in the event of
any such  breach,  the Bank shall be entitled to both  immediate  and  permanent
injunctive relief without the necessity of posting any bond therefor to preclude
any such  breach  (in  addition  to any  remedies  of law  which the Bank may be
entitled).

         3. Assignability.  This Agreement shall not be assigned by either party
without the prior written consent of the other party.

         4. Parties Bound. This Agreement shall be binding upon and inure to the
benefit  of the  parties  hereto  and their  respective  legal  representatives,
successors and assigns, except as otherwise expressly provided herein.

         5.  Texas  Law to  Apply.  This  Agreement  shall be  subject  to,  and
interpreted  by and in  accordance  with,  the laws  (excluding  conflict of law
provisions) of the State of Texas. This Agreement is made and executed in Dallas
County,  Texas, and all actions or proceedings with respect to, arising directly
or indirectly in connection  with,  out of,  related to or from this  Agreement,
shall be litigated in courts having situs in Dallas County, Texas.

         6. Legal Construction. In the event any provision of this Agreement, or
the application of such provision to any person or set of  circumstances,  shall
be determined to be invalid,  unlawful,  or  unenforceable to any extent for any
reason,  the remainder of this Agreement,  and the application of such provision
to persons or circumstances  other than those as to which it is determined to be
invalid, unlawful, or unenforceable, shall not be affected and shall continue to
be enforceable to the fullest extent permitted by law.

         7. Notice.  All notices or advices required or permitted to be given by
or pursuant to this Agreement,  shall be given in writing.  All such notices and
advices  shall be (i)  delivered  personally,  (ii)  delivered  by  facsimile or
delivered by U.S.  Registered or Certified Mail,  Return Receipt Requested mail,
or (iii) delivered for overnight delivery by a nationally  recognized  overnight
courier service. Such notices and advices shall be deemed to have been given (i)
the first business day following the date of delivery if delivered personally or
by  facsimile,  (ii) on the third  business day following the date of mailing if
mailed by U.S. Registered or Certified Mail, Return Receipt Requested,  or (iii)
on the date of receipt if  delivered  for  overnight  delivery  by a  nationally
recognized overnight courier service. All such notices and advices and all other
communications related to this Agreement shall be given as follows:

                  If to the Bank:

                                    BOK Financial Corporation
                                    P.O. Box 2300
                                    Tulsa, OK 74192
                                    Attention: Stanley A. Lybarger
                                    Telecopy No.: (918) 588-6888



<PAGE>


                                    and

                                    Bank of Texas, N.A.
                                    5956 Sherry Lane, Suite 1800
                                    Dallas, Texas 75225
                   Attention: Mr. C. Fred Ball, Jr., President
                          Telecopy No.: (214) 521-9072

                                    and

                                    Canyon Creek National Bank
                                    333 West Campbell Road
                                    Richardson, Texas 75080
                                    Attention:  Chairman of the Board
                                    Telecopy No.:  (972) 234-8641

                                    With a Copy to:

                                    Frederic Dorwart
                                    Old City Hall
                                    124 East Fourth Street
                                    Tulsa, OK 74103-5010
                                    Telecopy No.: (918) 583-8251

                  If to Eisemann:

                                    ------------------------------
                                    ================================
                                    --------------------------------
                                    Telecopy No.: __________________

or to such other address as the party may have furnished to the other parties in
accordance  herewith,  except  that  notice  of  change  of  addresses  shall be
effective only upon receipt.

         8. Entire  Agreement.  This  Agreement  is the entire  Agreement of the
parties  respecting the subject matter  hereof.  There are no other  agreements,
representations or warranties,  whether oral or written,  respecting the subject
matter hereof, except as stated in this Agreement.

         9. Counterparts.  This Agreement may be executed in counterparts,  each
of which shall be deemed an original. This Agreement shall become effective only
when all of the parties  hereto shall have executed the original or  counterpart
hereof. This Agreement may be executed and delivered by a facsimile transmission
of a counterpart signature page hereof.



<PAGE>


         IN WITNESS WHEREOF,  the undersigned have executed this Agreement as of
the date first above written.


                                               _________________________________
                                               Charles W. Eisemann



                                            CANYON CREEK NATIONAL BANK


                                            By:________________________________
                                                Charles O. Rolfe, Jr., President


                               

                                   EXHIBIT "F"

                                ESCROW AGREEMENT


         This   ESCROW   AGREEMENT   has  been   executed   this   ____  day  of
_______________,  1999, by and between BOK Financial Corporation  ("BOKF"),  the
shareholders of Chaparral  Bancshares,  Inc. (the  "Shareholders"),  and Bank of
Texas Trust Company, National Association (the "Escrow Agent").

         BOKF has deposited in escrow with the Escrow Agent $400,000 pursuant to
that certain  Agreement and Plan of Merger dated as of February 19, 1999,  among
BOKF, BOKF Merger Corporation Number Nine, and Chaparral  Bancshares,  Inc. (the
"Merger Agreement"). The parties agree that this escrow shall be administered in
accordance with Section 11.2 of the Merger Agreement, a true and correct copy of
which is attached hereto and incorporated herein by this reference. BOKF and the
Agents (as  defined  in Section  11.2 of the  Merger  Agreement)  shall  jointly
provide all notices to the Escrow  Agent  required by Section 11.2 of the Merger
Agreement  to fulfil the terms and  conditions  of the Escrow  Account,  and the
Escrow Agent shall act only pursuant to the joint written  instructions  of BOKF
and the Agents.

         The  parties  to  this  Escrow   Agreement  agree  that  the  following
provisions  shall  control  with  respect  to the  rights  duties,  liabilities,
privileges and immunities of the Escrow Agent.

         (a) The Escrow Agent is not a party to, and is not bound by, or charged
with notice of, any agreement out of which this escrow may arise.

         (b) The Escrow Agent acts  hereunder as a depository  only,  and is not
responsible or liable in any manner whatever for the  sufficiency,  correctness,
genuineness  or  validity  of the  subject  matter  of the  escrow,  or any part
thereof,  or for the form or execution thereof, or for the identity or authority
of any person  executing  or  depositing  it.  The Escrow  Agent will not render
investment advice with respect to the subject matter of this escrow.

         (c) In the event the Escrow Agent  becomes  involved in  litigation  in
connection  with this escrow,  the  undersigned  jointly and severally  agree to
indemnify  and save the Escrow  Agent  harmless  from all loss,  cost,  damages,
expenses  and  attorney's  fees  suffered or  incurred by the Escrow  Agent as a
result thereof.

         (d) The Escrow  Agent  shall be  protected  in acting  upon any written
notice, request, waiver, consent, certificate, receipt, authorization,  power of
attorney  or other  paper or  document  which  the  Escrow  Agent in good  faith
believes to be genuine and what it purports to be.

         (e) The Escrow Agent shall not be liable for anything that it may do or
refrain from doing in connection  herewith,  except its own gross  negligence or
willful misconduct.



<PAGE>


         (f) The Escrow Agent may consult with legal counsel in the event of any
dispute or question as to the  construction  of any of the provisions  hereof or
its  duties  hereunder,  and it shall  incur  no  liability  and  shall be fully
protected  in acting in  accordance  with the opinion and  instructions  of such
counsel.

         (g) In the event of any disagreement between any of the parties to this
agreement,  or  between  them or  either  of any of them and any  other  person,
resulting in adverse claims or demands being made in connection with the subject
matter of the escrow,  or in the event that the Escrow Agent,  in good faith, be
in doubt as to what action it should take  hereunder,  the Escrow  Agent may, at
its option, refuse to comply with any claims or demands on it, or refuse to take
any other action hereunder, so long as such disagreement continues or such doubt
exists, and in any such event, the Escrow Agent shall not be or become liable in
any way or to any person for its failure or refusal to act, and the Escrow Agent
shall be entitled to continue so to refrain  from acting until (i) the rights of
all  parties  shall  have  been  fully  and  finally  adjudicated  by a court of
competent jurisdiction, or (ii) all differences shall have been adjusted and all
doubt resolved by agreement among all of the interested persons,  and the Escrow
Agent shall have been  notified  thereof in writing  signed by all such persons.
The rights of the Escrow Agent under this  paragraph are cumulative of all other
rights which it may have by law or otherwise.

         Executed in Dallas, Texas this ___ day of __________, 1999.

BOK FINANCIAL CORPORATION


By: ____________________________________________                               
   Stanley A.  Lybarger, Chief Executive Officer


SHAREHOLDERS


By: ____________________________________________                            
    Charles W. Eisemann, as Chairman of the Board
    of Directors of Chaparral Bancshares, Inc.



BANK OF TEXAS TRUST COMPANY,
  NATIONAL ASSOCIATION


By: ___________________________                                               
    Name:
    Title:




 E
                         C O N F I D E N T I A L

                          ACQUISITION DOCUMENT
        (CASH PURCHASE AND REVERSE TRIANGULAR MERGER TRANSACTION)

                                  ****

                            MERGER AGREEMENT

                                  AMONG

                       BOK FINANCIAL CORPORATION,

                      PARK CITIES BANCSHARES, INC.,

                      MID-CITIES BANCSHARES, INC.,

                                   AND

                        MID-CITIES NATIONAL BANK

                                 * * * *

                  AGREEMENT DATE OF FEBRUARY 24, 1999

                                  INDEX
                                   TO
                            MERGER AGREEMENT


SECTION                                                               PAGE


1.    Purpose of this Merger Agreement. . .                           1


2.    The Merger. . . . . . . . .                                     3


3.    Effect of the Merger. . . .                                     4


4.    Representations and Warranties of Mid-Cities .                  5


5.    Representations and Warranties of BOKF.........................15


6.    Covenants......................................................17


7.    Conditions Precedent to Closing by BOKF and Park Cities........31


8.    Conditions Precedent to Closing by Mid-Cities..................33


9.    Closing........................................................34


10.   Escrow.........................................................36


11.   Miscellaneous Provisions.......................................38


         EXHIBIT CAPTION
 EXHIBIT NUMBER


      Subsidiaries
         4.3


      Material Liabilities
        4.6.3


      Conduct of Business Prior to Closing Exceptions
         4.7


      Contracts and Commitments
         4.9


      Litigation
         4.10


      Brokers and Commissions
         4.11


      Employee Contracts and Benefit Plans
         4.15


      ADA Exceptions
         4.16


      Compensation Exceptions
        6.3.7


      Principal Shareholders
         6.4


      Employment Agreements
         6.8


      Mid-Cities Counsel's Opinion
         7.4


      Non-Competition Agreement
         7.6


      BOKF Counsel's Opinion
         8.3


      Employment Agreement Exceptions
        9.1.3


MERGER AGREEMENT

This merger agreement ("Merger  Agreement") is made as of February 24, 1999 (the
"Agreement Date") among:

(i) Mid-Cities Bancshares, Inc., a Texas Corporation ("Mid-Cities");

(ii)     Mid-Cities National Bank ("Mid-Cities Bank");

(iii) BOK Financial Corporation ("BOKF"); and,

(iv)     Park Cities Bancshares, Inc, a Texas Corporation ("Park Cities").

In consideration of the mutual covenants contained herein, the adequacy of which
is hereby  expressly  acknowledged,  and  intending to be legally  bound hereby,
Mid-Cities, Mid-Cities Bank, BOKF and Park Cities agree as follows:

1.   PURPOSE OF THIS MERGER  AGREEMENT.  The purpose of this Merger Agreement is
     as follows:

1.1 Mid-Cities is a bank holding company  organized under the laws of Texas with
offices in Hurst,  Texas.  Mid-Cities  is subject to  regulation  by the Federal
Reserve Board ("FRB"). Mid-Cities owns all of the issued and outstanding capital
stock of Mid-Cities  Bank (located in Hurst,  Texas).  Mid-Cities Bank is a bank
organized  in  accordance  with the laws of the  United  States  and  subject to
regulation  by the Office of the  Comptroller  of the  Currency.  The issued and
outstanding capital stock of Mid-Cities consists solely of a single class of one
million  (1,000,000)  shares of  common  stock of a par value of $1.00 per share
("Mid-Cities  Common Stock") of which 764,421 shares are issued and outstanding.
The issued and outstanding capital stock of Mid-Cities Bank consists solely of a
single class of one million (1,000,000) shares of common stock of a par value of
$5.00 per

share  ("Mid-Cities  Bank Common  Stock") of which 302,621 shares are issued and
outstanding.  The Common Stock of Mid-Cities  issued and  outstanding  as of the
Closing,  including  all Common  Stock of  Mid-Cities  acquired  pursuant to the
exercise of the Stock Options (as hereafter  defined),  is hereafter  called the
"Mid-Cities Common Stock".

1.2 BOKF is a bank  holding  company  organized  under  the laws of the State of
Oklahoma. BOKF is subject to regulation by the FRB. BOKF owns all of the capital
stock of Park Cities.  Park Cities is a bank holding company organized under the
laws of the State of Texas. Park Cities is subject to regulation by the FRB. The
issued and outstanding capital stock of Park Cities consists solely of 2,000,000
shares of common stock,  par value of $5.00 per share (the "Park Cities Shares")
of which 1,193,034 shares are issued and outstanding.

1.3 The  purpose  of  this  Merger  Agreement  is to set  forth  the  terms  and
conditions  on which  Mid-Cities  and  Park  Cities  shall  merge.  This  Merger
Agreement  shall  constitute a plan of merger for corporate law purposes and for
federal income tax purposes under Section  368(a)(2)(D) of the Internal  Revenue
Code.

1.4 Park Cities  owns all of the issued and  outstanding  capital  stock of Park
Cities Corporation,  a Nevada  Corporation.  Park Cities Corporation owns all of
the issued and outstanding capital stock of Bank of Texas,  National Association
("BOT").

                                  - 2 -

2. THE MERGER. On the terms and conditions  hereafter stated, Park Cities [or an
acquisition subsidiary thereof] shall be merged into Mid-Cities (the "Merger").

2.1 Mid-Cities shall be the surviving corporation ("Surviving Corporation").

2.2 The  Articles  of  Incorporation  of  Mid-Cities  shall be the  Articles  of
Incorporation of the Surviving Corporation until changed as provided by law.

2.3 The Bylaws of Park Cities [or an  acquisition  subsidiary  thereof] shall be
the Bylaws of the Surviving Corporation until changed as provided by law.

2.4  The  officers  of  Park  Cities  shall  be the  officers  of the  Surviving
     Corporation, until changed as provided by law.

2.5  The  directors  of Park  Cities  shall be the  directors  of the  Surviving
     Corporation until changed as provided by law.

2.6 The Merger  shall be  effective  at the  Closing (as  hereafter  provided in
Section 9).

2.7 Each share of Mid-Cities  Common Stock shall,  subject to the  provisions of
Section 5.11 and following of the Texas Business Corporation Act,  automatically
and  without  any action on the part of the holder  thereof,  be  cancelled  and
converted solely into the right to receive:

2.7.1 At  Closing  an  amount  of United  States  Dollars  equal to (x) the Cash
Consideration  (as  hereafter  defined)  less the Escrow  Amount  (as  hereafter
defined) divided by (y) the number of shares of Mid-Cities Common Stock; and,

                                  - 3 -

2.7.2 Upon termination of the Escrow,  her, his, or its  proportionate  share of
the remaining Escrow Amount, as provided in Section 10.

2.8  The  Cash   Consideration   shall  equal  (i)  Seventeen   Million  Dollars
($17,000,000)  less (ii) the Transaction  Costs (as hereafter  defined) and less
(iii) One Hundred  Sixty-Five  Thousand  Dollars  ($165,000),  representing  the
Mid-Cities long term debt. The Transaction Costs are all accounting,  brokerage,
commission, and legal costs attributable to, or resulting from, the negotiation,
execution,  delivery,  and consummation of this Agreement incurred by Mid-Cities
and Mid-Cities Bank in excess of Three Hundred Thousand Dollars  ($300,000).  If
the Merger is not  consummated  by July 1, 1999, for whatever  reason,  the Cash
Consideration  shall be  increased  by an  aggregate  amount of the  total  Cash
Consideration  to be  paid  to  all  shareholders  (prior  to  such  adjustment)
multiplied  by the  result of (A) the number of days from and after July 1, 1999
to the date the Merger is consummated, multiplied by (B) .0002778 (i.e., 1/360th
of 10%).

2.9       The Escrow Amount shall be Three Hundred Thousand Dollars ($300,000).

2.10  Notwithstanding  the  provisions of Section 2.7, all holders of Mid-Cities
Common  Stock  electing to dissent to the Merger  pursuant  to Section  5.11 and
following of the Texas Business Corporation Act shall have only those rights set
forth in said sections.

3. EFFECT OF THE MERGER. The Merger shall have the following effects:

3.1 The corporate  franchise,  existence,  rights and  liabilities of Mid-Cities
shall continue unaffected and unimpaired.

                                  - 4 -

3.2  The corporate franchise,  existence,  rights and liabilities of Park Cities
     [or an  acquisition  subsidiary]  shall be merged into  Mid-Cities  and the
     separate  existence  of Park Cities [or an  acquisition  subsidiary]  shall
     cease.

3.3 Mid-Cities shall have and be vested with all of the rights,  powers, assets,
property,  liabilities  and  obligations  of Park  Cities  [or  the  acquisition
subsidiary thereof].

4.  REPRESENTATIONS AND WARRANTIES OF MID-CITIES AND MID-CITIES BANK. Mid Cities
and Mid-Cities Bank hereby, jointly and severally, represent and warrant to BOKF
that:

4.1  INCORPORATION  AND  CORPORATE  POWER.  Mid-Cities  is  a  corporation  duly
organized,  validly  existing  and in good  standing  under  the laws of  Texas.
Mid-Cities Bank is a bank duly organized,  validly existing and in good standing
under the laws of the United States.  Each of Mid-Cities and Mid-Cities Bank has
all  the  corporate  power  and  authority  necessary  and  required  to own its
properties and to conduct its business as such business is now being  conducted.
Each of Mid-Cities and Mid-Cities  Bank is (A) in material  compliance  with all
applicable provisions of all applicable federal, state and local statutes, laws,
regulations,  ordinances and other requirements of any governmental  authorities
(including,  but not limited to, whether similar or dissimilar, the Bank Holding
Company Act of 1956, the Texas Business  Corporation  Act, the National Bank Act
and the filing of all  administrative  reports  and the  payment of all fees) in
effect as of the date of this  Merger  Agreement  and (B)  shall be in  material
compliance therewith at the time of Closing.

                                  - 5 -

4.2       CAPITAL.

4.2.1  The  Mid-Cities  Common  Stock is and at the  Closing  will be all of the
issued  and  outstanding  capital  stock of  Mid-Cities.  Other  than the  Stock
Options,  no person or entity  has any right or option to  acquire  any  capital
stock of Mid-Cities. The Mid-Cities Common Stock shall consist at the Closing of
no more than Nine Hundred Ninety-One Thousand Four Hundred Twenty-One  (991,421)
shares.

4.2.2  Mid-Cities  owns  all of the  issued  and  outstanding  capital  stock of
Mid-Cities  Bank Common Stock.  The  Mid-Cities  Bank Common Stock is and at the
Closing will be all of the issued and  outstanding  capital  stock of Mid-Cities
Bank.  No person or entity has any right or option to acquire any capital  stock
of Mid-Cities Bank.

4.3  CAPITALIZATION  OF MID-CITIES  AND MID-CITIES  BANK. The Mid-Cities  Common
Stock and Mid-Cities Bank Common Stock are validly issued and outstanding, fully
paid and  non-assessable.  There are no  outstanding  subscriptions,  conversion
privileges,  calls,  warrants,  options or agreements  obligating Mid-Cities and
Mid-Cities  Bank to  issue,  sell or  dispose  of,  or to  purchase,  redeem  or
otherwise acquire any shares of their capital stock (collectively,  "options and
rights") except options to purchase two hundred twenty-seven  thousand (227,000)
shares  of  Common  Stock  of  Mid-Cities  (the  "Stock  Options").  None of the
Mid-Cities  Common  Stock and  Mid-Cities  Bank Common  Stock has been issued or
disposed of in  violation of any  preemptive  rights of any  shareholder  nor in
violation of any agreement

                                   -6-

to  which  Mid-Cities  or  Mid-Cities  Bank was or is a  party.  Mid-Cities  and
Mid-Cities  Bank  have no  subsidiaries  and do not own,  nor have the  right or
obligation to acquire, any shares of equity securities of any corporation except
(i)  Mid-Cities  Bank is a  subsidiary  of  Mid-Cities  and (ii) as set forth in
Exhibit 4.3.

4.4 NON-VIOLATION OF OTHER AGREEMENTS. The execution and delivery of this Merger
Agreement,  and the  compliance  with its terms and provisions by Mid-Cities and
Mid-Cities Bank  (including the execution and delivery of any document  required
to be executed by Mid-Cities  or  Mid-Cities  Bank) will not breach any material
agreement,  lease,  or  obligation,  whether  similar  or  dissimilar,  by which
Mid-Cities or Mid-Cities Bank is bound.

4.5  FINANCIAL  STATEMENTS.  Mid-Cities  has  delivered  to BOKF,  or will  have
delivered  to BOKF prior to the Closing as soon as future  financial  statements
are available, copies of the following ("Financial Statements"):

4.5.1   Consolidated   Financial   Statements   (Audited)  for   Mid-Cities  and
Subsidiaries, December 31, 1996, 1997, and 1998 (if available at the Closing);

4.5.2 Financial  Statements  (Unaudited) for Mid-Cities Bank, December 31, 1996,
1997, and 1998;

4.5.3 Financial  Statements  (Unaudited) for Mid-Cities and Subsidiaries,  March
31, 1999 (if the Closing  occurs after April 15, 1999) and after April  15,1999,
the most recent monthly financial statements as are available as of the Closing;
and,

                                  - 7 -

4.5.4 Financial  Statements  (Unaudited) for Mid-Cities Bank, March 31, 1999 (if
the Closing  occurs  after April 15,  1999) and after  April  15,1999,  the most
recent monthly financial statements as are available as of the Closing.

The Financial  Statements  described in Section  4.5.1 and 4.5.2,  (A) have been
prepared  or will have been  prepared  in  accordance  with  generally  accepted
regulatory  accounting  principles,  consistently applied and (B) fairly reflect
the financial condition and results of operations for the indicated periods. The
Financial  Statements  described in Sections  4.5.3 and 4.5.4 fairly reflect the
financial condition and results of operations for the periods indicated, subject
to immaterial year-end adjustments and the omission of footnotes.

4.6  MATERIAL  LIABILITIES.  Neither  Mid-Cities  nor  Mid-Cities  Bank  has any
material  liabilities  (including,  but  not  limited  to,  whether  similar  or
dissimilar,  liabilities or obligations for taxes, whether due or to become due)
except: 4.6.1 Those fully reflected or reserved against, or otherwise disclosed,
in the Financial Statements;

4.6.2Those  incurred with due care since  December 31, 1998 in the normal course
     of business consistent with past practices; and,

4.6.3 Those specifically disclosed in Exhibit 4.6.3 to this Merger Agreement.

                                  - 8 -

4.7 CONDUCT OF BUSINESS  PRIOR TO CLOSING.  Except as set forth in Exhibit  4.7,
since December 31, 1998, and until the Closing of this transaction,  (A) each of
Mid-Cities  and  Mid-Cities  Bank has carried on and will carry on its  business
only in the ordinary and normal course  consistent  with past  practices and (B)
has not and will not, without the prior consent of BOKF:

4.7.1 Incur any material liabilities,  commitments or obligations, contingent or
otherwise, or dispose of any of its assets, except in the ordinary course of its
business  consistent  with past practices and for the purpose of carrying on the
business as a going concern;

4.7.2 Incur any bank or other  institutional  debt,  or enter into any agreement
for the borrowing of money;  except borrowing of federal funds or borrowing from
the Federal Home Loan Bank by Mid-Cities Bank consistent with past practices;

4.7.3 Suffer any material  adverse change in the financial  conditions,  assets,
liabilities,  business  or  property  of  Mid-Cities  taken  as a  whole  or  of
Mid-Cities Bank taken as a whole; and,

4.7.4 Make any  material  change in the manner in which  business  is  conducted
(including,  without  limitation,  branch  relations,  branch closings,  and any
material change in products offered to customers).

4.8  TAX RETURNS/REPORTS.  Each of Mid-Cities and Mid-Cities Bank has duly filed
     all tax reports and returns required to be filed by it and has duly paid

                                  - 9 -

all taxes and other  charges  claimed  to be due from it by  federal,  state and
local  taxing  authorities.  No waivers of the statute of  limitation  have been
issued with respect to unaudited  years.  Mid-Cities and Mid-Cities Bank have no
knowledge  of any  facts  which  could  reasonably  be  expected  to result in a
material  deficiency with respect to unaudited tax returns which would result in
a material  adverse  effect on Mid-Cities  taken as a whole or  Mid-Cities  Bank
taken as a whole.

4.9       CONTRACTS AND COMMITMENTS.

4.9.1 A list of all  contracts and  commitments,  other than credit and lending,
deposit  or  borrowing  transactions  entered  into in the  ordinary  course  of
business by  Mid-Cities  or Mid- Cities Bank which are material to the business,
operations or financial  condition of  Mid-Cities or Mid-Cities  Bank as of this
date,  is set forth on Exhibit 4.9. For the purpose of Exhibit 4.9,  materiality
shall  mean  those  contracts  and  commitments  (including  a series of related
contracts  or  commitments)  for  which  payment  or other  consideration  to be
furnished  by any  party  is more  than  $25,000  a year or  $100,000  over  the
remaining life of the contract.

4.9.2 Except as set forth on Exhibit 4.9, each of Mid-Cities and Mid-Cities Bank
has in all material  respects  performed and is performing all  contractual  and
other obligations required to be performed by them.

                                 - 10 -

4.10 LITIGATION.  Except as set forth in Exhibit 4.10, there is not pending, or,
to the knowledge and belief of Mid-Cities and Mid-Cities  Bank  threatened,  any
claim,  litigation,  proceeding,  order of any court or governmental  agency, or
governmental  investigation or inquiry to which Mid-Cities or Mid-Cities Bank is
a party or which involves their  business  operations,  any of their property or
any property leased by them which, individually or in the aggregate:

4.10.1 May  reasonably  result in any material  adverse  change in the financial
condition,  business,  prospects, assets, properties or operations of Mid-Cities
taken as a whole or Mid-Cities Bank taken as a whole; or,

4.10.2 May reasonably involve the expenditure of more than a total of $25,000 in
     legal fees or costs;

4.11 BROKERAGE FEES. Neither Mid-Cities nor Mid-Cities Bank has incurred or will
incur, directly or indirectly, any liability for brokerage,  finder's, financial
advisor's or agent's fees or commissions by virtue of any commitment made by any
of them in connection with this Merger Agreement or any transaction contemplated
hereby except as described in Exhibit 4.11.

4.12 REQUIRED CORPORATE ACTION. The execution, delivery and consummation of this
Merger Agreement has been duly and validly  authorized by the board of directors
of  Mid-Cities  and will at the  time of  Closing  have  been  duly and  validly
authorized by the board of directors of Mid-Cities Bank and the  shareholders of
Mid-Cities  and  Mid-Cities  Bank in  accordance  with the  requirements  of the
National Bank Act, the Texas Business  Corporation Act and all other  applicable
law.

                                 - 11 -

4.13  AUTHORIZED  EXECUTION.  This Merger  Agreement  has been duly executed and
delivered by duly  authorized  officers of Mid-Cities and Mid-Cities  Bank. This
Merger  Agreement  constitutes  the  legal,  valid  and  binding  agreement  and
obligation  of  Mid-Cities,  and  Mid-Cities  Bank  enforceable  against them in
accordance  with its terms,  except as may be limited by applicable  bankruptcy,
insolvency,  moratorium,  receivership,  and other  similar laws  affecting  the
rights of creditors generally.

4.14 TITLE TO ASSETS; ENCUMBRANCES. Mid-Cities and Mid-Cities Bank have good and
valid title (with  respect to fee real  estate,  good and valid title shall mean
such  title  as may be  insured  on  standard  title  insurance  forms  with  no
exceptions  materially and adversely  affecting the value or use of the fee real
estate) to their assets, and in each case subject to no mortgage,  pledge, lien,
security  interest,  conditional  sale  agreement,  or other  encumbrance of any
nature whether similar or dissimilar, except:

4.14.1 Such  encumbrances  which are purchase money security  interests  entered
into in the ordinary course of business  consistent with past practice reflected
on their books and records;

4.14.2  Lessors'  interests  in  leased  tangible  real  and  personal  property
reflected on their books and records;

4.14.3   Such encumbrances for taxes and assessments not yet due and payable;

                                 - 12 -

4.14.4  Encumbrances  as do not  materially  detract from the value or interfere
with the use or operation of the asset subject thereto; and,

4.14.5  Repossessed  and  foreclosed  assets  acquired in  satisfaction  of debt
previously contracted.

4.15  EMPLOYEES.  Except as set forth on Exhibit 4.15,  none of the employees of
Mid-Cities and Mid-Cities  Bank is employed under any employment  contract (oral
or written) or is the beneficiary of any compensation  plan (oral or written) or
is entitled to any payment from Mid-Cities and Mid-Cities Bank by reason of this
Merger Agreement or the Merger and there are no employment contracts, management
contracts,  consulting agreements,  union contracts,  labor agreements,  pension
plans,  profit  sharing plans or employee  benefit plans to which  Mid-Cities or
Mid-Cities Bank are a party or by which either of them is bound.  The Mid-Cities
401(k) Plan is in full compliance with all requirements of the Plan and with the
Employee Retirement Income Security Act and the regulations promulgated pursuant
thereto.

4.16  ENVIRONMENTAL  LAWS. To the best  knowledge of Mid-Cities  and  Mid-Cities
Bank,  the  existence,  use  and  operation  of the  assets  of  Mid-Cities  and
Mid-Cities Bank are in material compliance with all applicable  statutes,  rules
and regulations including, without limiting the generality of the foregoing, all
environmental  and zoning  laws and,  except as set forth on Exhibit  4.16,  the
Americans With Disabilities Act.

                                 - 13 -

4.17  SURVIVAL  AND  INDEPENDENCE  OF   REPRESENTATIONS   AND  WARRANTIES.   The
representations  and warranties of Mid-Cities  and Mid-Cities  Bank made in this
Merger   Agreement  shall  survive  the  Closing  hereof   notwithstanding   any
investigation  or  knowledge of BOKF or Park  Cities;  provided  BOKF shall give
notice  to Agent  (as  hereafter  defined)  of any claim of a breach of any such
representations  and  warranties  on or before March 31, 2000 (the "Claim Notice
Deadline");  and,  provided  further,  the  sole  remedy  for a  breach  of such
representations  and warranties shall be a claim against the Escrow Amount. Each
of the  representations  and warranties of Mid-Cities  and  Mid-Cities  Bank set
forth in this Merger Agreement is a separate and independent  representation and
warranty,  shall be  cumulative of and in addition to all other  warranties  and
representations,  and shall not limit or be  interpreted  to be in derogation of
any other  representation  or warranty made herein.  Any disclosure  made on any
Exhibit  hereto shall be  applicable  to the entire  Agreement  and not just one
representation or warranty.

5.  REPRESENTATIONS  AND WARRANTIES OF BOKF. BOKF and Park Cities  represent and
warrant, jointly and severally, to Mid-Cities that:

5.1  INCORPORATION  AND CORPORATE  POWER.  BOKF and Park Cities are corporations
duly organized, validly existing and in good standing under the laws of Oklahoma
and Texas,  respectively.  BOKF and Park Cities have all the corporate power and
authority necessary and required to consummate the transactions  contemplated by
this Merger Agreement.

5.2 NON-VIOLATION OF OTHER AGREEMENTS. The execution and delivery of this Merger
Agreement, and compliance with its terms and provisions by BOKF

                                 - 14 -

and Park Cities and the  execution  of any  document  required to be executed by
BOKF or Park Cities, will not:

5.2.1  Violate,  conflict  with or  result  in the  breach  of their  respective
certificates  of  incorporation  or bylaws or any of the  terms,  conditions  or
provisions  of any  agreement  or  instrument  to which BOKF or Park Cities is a
party, or by which BOKF or Park Cities is bound;

5.2.2 Result in the creation or imposition of any lien,  charge,  encumbrance or
restriction  of any  nature  whatever  upon any of the  property,  contracts  or
business of BOKF and Park Cities;  or, 5.2.3 Require the consent of any party to
a contract with

BOKF and Park Cities in order to keep the contract enforceable.

5.3 REQUIRED CORPORATE ACTION. The execution, delivery, and consummation of this
Merger Agreement by BOKF and Park Cities has been duly and validly authorized by
the boards of  directors  of BOKF and Park Cities and, as of the  Closing,  will
have been  approved  by the  shareholder  of Park  Cities.  The  approval of the
shareholders  of BOKF is not  required.  This  Merger  Agreement  has been  duly
executed and delivered by duly authorized officers of BOKF and Park Cities. This
Merger Agreement constitutes a legal, valid and binding agreement and obligation
of BOKF and Park Cities  enforceable  against BOKF and Park Cities in accordance
with its terms, except as may be limited by applicable  bankruptcy,  insolvency,
moratorium,  receivership,  and  other  similar  laws  affecting  the  rights of
creditors generally.

                                 - 15 -

5.4  BROKERAGE  FEES.  Neither  BOKF nor Park Cities has incurred or will incur,
directly  or  indirectly,  any  liability  for  brokerage,  finder's,  financial
advisor's or agent's fees or  commissions  by virtue of any  commitment  made by
BOKF or Park Cities in connection with this Merger  Agreement or any transaction
contemplated  hereby.  Neither BOKF nor Park Cities has any  knowledge  that any
party has asserted any claim of such nature against BOKF or Park Cities.

5.5  SURVIVAL  AND   INDEPENDENCE  OF   REPRESENTATIONS   AND  WARRANTIES.   The
representations  and  warranties  of BOKF and Park  Cities  made in this  Merger
Agreement  shall  not  survive  the  Closing  hereof;  provided,   however,  the
indemnification  obligations  of Section  5.6 hereof  shall  survive the Closing
indefinitely. Each of the representations and warranties of BOKF and Park Cities
set forth in this Merger Agreement is a separate and independent  representation
and warranty, shall be cumulative of and in addition to all other warranties and
representations;  and shall not limit any other  representation or warranty made
herein.

5.6 BOKF AND PARK CITIES  INDEMNIFICATION.  BOKF and Park Cities shall indemnify
the present and future  directors,  officers  and  employees of  Mid-Cities  and
Mid-Cities Bank (the "Indemnified  Parties") to the fullest extent to which such
Indemnified Parties were entitled under the Articles of Incorporation and Bylaws
of Mid-Cities  and/or the Articles of Association and Bylaws of Mid-Cities Bank.
BOKF shall cause Mid-Cities to purchase

                                 - 16 -

at  the  Closing  "tail  coverage"  under  the  Mid-Cities  existing  Mid-Cities
directors  and  officers  liability  policy  for such  period  of time as may be
purchased by a premium equal to the pre-paid  premium for such policy  remaining
on the  consolidated  books and  records of  Mid-Cities  as of the  Closing.  In
addition,  BOKF and Park Cities shall indemnify Mr. Paul A. Rowntree for all tax
liability  that he may incur under Section 280G of the Internal  Revenue Code of
1986,  as  amended  (the  "Code")  as a result of  payments  received  by him in
connection  with the  Merger and as a result of Stock  Options  issued to him by
Mid-Cities.

6.  COVENANTS.

6.1 FULL ACCESS. In order that BOKF shall have the full opportunity to make such
investigations  as  it  shall  reasonably   desire  concerning   Mid-Cities  and
Mid-Cities  Bank and their business  affairs,  Mid-Cities  and  Mid-Cities  Bank
shall:

6.1.1  Give BOKF,  its  employees,  counsel,  accountants  and other  authorized
representatives, as necessary to conduct the investigation and whose names shall
have been provided to (and approved by) Mid-Cities, full access, upon reasonable
notice to Mid-Cities and at reasonable times without unduly interfering with the
conduct of business by Mid-Cities and Mid-Cities  Bank  throughout the period up
to the Closing,  to all of the  facilities,  properties,  books,  contracts  and
records of Mid-Cities and Mid-Cities Bank.

                                 - 17 -

6.1.2  Authorize its  accountants  to give BOKF full access to the  accountant's
records, including work papers; and,

6.1.3 Furnish to BOKF during that period all additional financial, operating and
other information  concerning  Mid-Cities and Mid-Cities Bank and their business
affairs, as BOKF may reasonably request and which Mid-Cities and Mid-Cities Bank
shall have available.

6.1.4 All information  provided pursuant to this Section 6.1 shall be subject to
the provisions of Section 6.7.

6.2 CONDUCT OF  BUSINESS  PRIOR TO THE  CLOSING  DATE.  From this date until the
Closing Date,  each of Mid-Cities  and Mid-Cities  Bank shall,  except as may be
first approved in writing by BOKF or as is otherwise  permitted or  contemplated
in this Merger Agreement:

6.2.1    Maintain their corporate existence in good standing;

6.2.2  Maintain  the general  character  of their  business  and  conduct  their
business in their ordinary and usual manner consistent with past practices;

6.2.3 Maintain  proper business and accounting  records  generally in accordance
with past practices;

6.2.4 Maintain  their  properties  (except  repossessed  and  foreclosed  assets
acquired in  satisfaction of debts  previously  contracted) in normal repair and
condition,  normal  wear and tear and  damage  due to fire or other  unavoidable
casualty excepted;

                                 - 18 -

6.2.5 Preserve their business organizations intact, use their reasonable efforts
to maintain  satisfactory  relationships  with  suppliers,  customers and others
having  business  relations  with them  whose  relationships  they  believe  are
desirable  to  maintain,  and  use  their  reasonable  efforts  to  procure  the
willingness of all of the personnel  employed by them  immediately  prior to the
execution  of this  Merger  Agreement  who are  material to the success of their
business  to  continue  in their  employ  on  substantially  the same  terms and
conditions as those on which such personnel were employed  immediately  prior to
the execution of this Merger Agreement;

6.2.6  Maintain in full force and effect  insurance  comparable in amount and in
scope of coverage to that now maintained by them on the date hereof;

6.2.7 Except as otherwise  disclosed  in this Merger  Agreement,  perform all of
their obligations under all material  contracts,  leases and agreements relating
to or affecting their assets, properties and businesses; and,

6.2.8  Comply in all  material  respects  with and perform all  obligations  and
duties  imposed  upon them by  federal,  state and local  laws,  and all  rules,
regulations  and  orders  imposed  by  federal,   state  or  local  governmental
authorities,  except as may be  contested  by them in good faith by  appropriate
proceedings.

                                 - 19 -

6.3 MID-CITIES AND MID-CITIES BANK PROHIBITED ACTIONS PRIOR TO THE CLOSING DATE.
From this date until the Closing Date,  Mid-Cities and Mid-Cities Bank shall not
(except as  otherwise  permitted  by this Merger  Agreement  or as  requested or
approved  by BOKF  which  approval  shall be  deemed  given  unless  BOKF  shall
specifically  deny such approval in writing  within five (5) business days after
receiving a request for approval from Mid-Cities or Mid-Cities Bank):

6.3.1  Incur  any  indebtedness  for  borrowed  money  or incur  any  noncurrent
indebtedness  for the purchase price of any fixed or capital asset,  or make any
extension of credit or any loans to,  guarantee the  obligations of, or make any
additional  investments  in,  any other  person,  corporation  or joint  venture
(whether an existing customer or a new customer) except:

6.3.1.1  Extensions of credit,  loans and  guarantees (i) less than Five Hundred
Thousand  Dollars  ($500,000)  per  transaction  or (ii) less  than Two  Hundred
Thousand Dollars ($200,000) with existing  Mid-Cities  customers having existing
credit of Five Hundred  Thousand  Dollars  ($500,000) or more made by Mid-Cities
Bank in the usual and ordinary course of its banking  business,  consistent with
prior practices and policies;

                                 - 20 -

6.3.1.2 Legal investments by Mid-Cities Bank in the usual and ordinary course of
its banking business consistent with prior practices and policies.

6.3.1.3  Borrowings  from the Federal Home Loan Bank, the Federal  Reserve Bank,
deposit  liabilities,  and federal funds  transactions by Mid-Cities Bank in the
ordinary course of business consistent with past practices.

6.3.2 Make any (a) material  change,  except in the ordinary and usual course of
business,  in their  assets  (including,  but not  limited to, any change in the
composition of such assets so as to materially  alter the proportion of cash) or
liabilities,  (b) material  commitment for any capital  expenditures,  excluding
expenditures  for repairs and  remodeling  in the  ordinary  and usual course of
business,  or (c) sale or other  disposition of any material capital asset other
than for fair value in the ordinary course of business;

6.3.3 Make any change in their  Articles  of  Incorporation  or  Association  or
Bylaws;

                                 - 21 -

6.3.4 Except for the Stock Options,  authorize any shares of their capital stock
for issuance, issue any shares of any previously authorized but unissued capital
stock or grant, issue or make any option or commitment relating to their capital
stock;

6.3.5 Enter into any letter of intent or agreement to sell any of their material
assets,  except in the normal and ordinary course of their business, or acquire,
be acquired by, or merge,  consolidate  or reorganize  with any person,  firm or
corporation;

6.3.6 Declare or pay any dividend, make any other distribution or payment or set
aside any amount for payment with respect to any shares of their  capital  stock
or directly or indirectly,  redeem,  purchase or otherwise acquire any shares of
their capital stock or make any commitment relating thereto, provided,  however,
Mid-Cities  Bank may pay a  dividend  in March 1999 in an amount  sufficient  to
enable  Mid-Cities  to reduce  its  long-term  debt to a  principal  balance  of
$165,000.

6.3.7  Except  as set  forth in  Exhibit  6.3.7,  make any (a)  increase  in the
compensation payable or to become payable to any of their directors, officers or
employees  (including,  without  limitation,  any bonus or incentive  payment or
agreement), (b) make or enter into any written employment contract or

                                 - 22 -

any bonus, stock option,  profit sharing,  pension,  retirement or other similar
payment or  arrangement,  or (c) make any payment to any  person,  except in the
usual and  ordinary  course of  business  or except as  required  by an existing
agreement set forth in the Exhibits hereto;

6.3.8  Make any  material  change in their  banking,  safe  deposit  or power of
attorney arrangements;

6.3.9 Enter into any trust, escrow, agency and similar trust company agreements,
purchase  orders and contracts  for goods and  services,  except in the ordinary
course of business consistent with past practices;

6.3.10 Enter into any agreement  resulting in the  imposition of any mortgage or
pledge of their assets or the creation of any lien, charge or encumbrance on any
of their assets;

6.3.11 Incur any  material  obligation  or  liability,  absolute or  contingent,
except in the  ordinary  course of business  or  pursuant to existing  contracts
described in this Merger Agreement;

6.3.12 Take any action which would prevent compliance with any of the conditions
of this Merger Agreement; or,

6.3.13 Pre-pay long term  indebtedness;  provided,  however,  Mid-Cities may pay
interest, and make a principal reduction,  on its existing indebtedness in March
1999 in an  aggregate  amount  that  does not  exceed  Thirty  Thousand  Dollars
($30,000).

                                 - 23 -

6.3.14 If the Closing of the transaction as contemplated by this Agreement shall
not have  occurred by June 27, 1999,  then  Mid-Cities  Bank may  dividend  such
amounts as are  necessary  to enable  Mid-Cities  to make such  payments  on its
long-term  indebtedness  as are  required  by the note and loan  agreement  with
respect thereto.

6.4 VOTE FOR  MERGER AND WAIVER OF RIGHT TO  DISSENT.  Mid-Cities  shall use its
best  efforts  to cause  each of the  shareholders  of  Mid-Cities  set forth on
Exhibit 6.4 to enter into an Irrevocable Proxy and Voting Agreement whereby each
shareholder agrees to vote his shares of Mid-Cities Common Stock in favor of the
Merger,  and use its best  efforts  to cause the  Merger to be  approved  by the
directors and  shareholders of Mid-Cities and Mid-Cities Bank in accordance with
applicable  law and  consummated  in  accordance  with the terms of this  Merger
Agreement.

6.5  REGULATORY  APPROVAL.  BOKF  shall  diligently  file  and  pursue  (A)  all
regulatory  applications  required  in order to  consummate  the  Merger and the
merger of Mid-Cities Bank into Bank of Texas,  National  Association,  including
but not limited to the necessary applications for prior approval of the Board of
Governors of the Federal Reserve System and the Office of the Comptroller of the
Currency on or before the thirtieth  (30th) calendar day following the Agreement
Date and (B)  thereafter  promptly file any required  supplements  or amendments
thereto. All applications, supplements, and

                                 - 24 -

amendments  shall be  substantially  complete when filed.  BOKF shall deliver to
Mid-Cities  and its counsel a copy of all such filings,  as filed,  within three
(3) business days after the filing  thereof.  Although all such filings shall be
the  responsibility  of BOKF,  BOKF shall  nevertheless  advise and consult with
Mid-Cities  on an ongoing  basis with respect to the filings and all matters and
events related thereto.  BOKF shall inform and make available to Mid-Cities from
time to time all matters  relating to the filings and the regulatory  approvals.
BOKF shall  diligently  proceed with reasonable  deliberate  speed to obtain all
such  approvals.  If any  regulatory  application  required  to be filed by BOKF
should be finally denied or disapproved by the respective  regulatory authority,
then BOKF shall  immediately give notice to Mid-Cities and this Merger Agreement
shall thereupon terminate,  subject to the provisions of Section 11. However, it
is understood  that a request for  additional  information or undertaking by the
applicant,  as a condition for  approval,  shall not be deemed to be a denial or
disapproval  so long as the applicant can  reasonably be expected to provide the
requested  information  or  undertaking.  In the event an  application is denied
pending an appeal,  petition for review,  or similar such act on the part of the
applicant,  then the  application  will be deemed  denied  unless the  applicant
promptly  and  diligently  prepares  and files  such  appeal and  continues  the
appellate process for the purposes of getting the necessary approval.

6.6  CONFIDENTIALITY.  Prior to the  Closing,  BOKF shall  keep all  information
disclosed to BOKF (its employees,  counsel,  accountants,  and other  authorized
representatives) by Mid-Cities or Mid-Cities Bank (or their

                                 - 25 -

representatives)  respecting the business and financial  condition of Mid-Cities
and  Mid-Cities  Bank  confidential  and shall  make no use of such  information
except to conduct the investigation contemplated by Section 6.4, the application
contemplated  by Section 6.5 and to  consummate  the  transactions  contemplated
hereby,  and  BOKF  shall  not use such  information  to  obtain  a  competitive
advantage in connection with any customer of Mid-Cities  Bank. In the event this
Merger Agreement is terminated for any reason BOKF (its agents,
officers,  directors,  employees and counsel) shall (i) return all copies of all
information and documents  obtained from Mid-Cities,  Mid-Cities Bank, and their
representatives,  (ii) thereafter keep all such information confidential and not
make use of any such information to obtain a competitive advantage in connection
with  any  customer  of Mid  Cities  Bank,  and  (iii)  shall  not  solicit  for
employment,  whether directly or indirectly,  any of the employees,  officers or
directors of Mid-Cities or Mid-Cities Bank.

6.7 BOKF  PROHIBITED  ACTION PRIOR TO CLOSING.  From this date until the Closing
Date, BOKF shall not take any action which would prevent  compliance with any of
the  conditions  of this Merger  Agreement.  BOKF shall not, and shall cause its
subsidiaries  not to, make or agree to make any  acquisition,  or take any other
action,  that  adversely  affects its  ability to  consummate  the  transactions
contemplated by this Merger Agreement and will otherwise continue to conduct its
business  operations  and shall cause the operations of its  subsidiaries  to be
conducted in a manner consistent with past operating practices.

                                 - 26 -

6.8 EMPLOYMENT  AGREEMENTS.  Mid-Cities and Mid-Cities Bank shall use their best
efforts to cause:

6.8.1 Paul A. Rowntree to enter into an  employment  agreement  with  Mid-Cities
Bank in the form and content of Exhibit 6.8.1 (the "Rowntree Agreement"); and

6.8.2 Vikki L. Pier to enter into an employment  agreement with  Mid-Cities Bank
in the form and content of Exhibit 6.8.2 (the "Pier Agreement").

6.9 MID-CITIES COVENANT TO OBTAIN APPROVALS.  Mid-Cities shall promptly seek and
use  commercially  reasonable  efforts to obtain  the  approval  of this  Merger
Agreement  and the  transactions  contemplated  hereby  by the  shareholders  of
Mid-Cities.  Mid-Cities Bank shall enter into an agreement to merge with Bank of
Texas, National Association, subject to the Closing of this Merger Agreement, in
form and content acceptable to BOKF.

6.10 COVENANTS RESPECTING  EMPLOYMENT AND NON-COMPETITION  AGREEMENTS.  BOKF and
Mid-Cities shall use commercially reasonable efforts to cause all employment and
non-competition agreements which are a condition precedent to the obligations of
BOKF under this Merger  Agreement  to be executed  and  delivered by the parties
thereto.

6.11 EMPLOYMENT BENEFITS.  Following the Closing, BOKF shall cause all employees
of  Mid-Cities  Bank to have the same  benefits  provided by BOKF  generally  to
employees  of BOKF and its  affiliates.  Employees of  Mid-Cities  Bank shall be
credited for their actual and credited service with Mid-Cities Bank for purposes
of eligibility, vesting and beneficial accrual for all BOKF

                                 - 27 -

employee benefit plans (including,  without  limitation,  the BOKF 401(k) plan);
provided, however, such employees shall not be credited
with prior  service in BOKF's  defined  benefit  pension plan.  Mid-Cities  Bank
employees  shall not be subject to any  exclusions for  pre-existing  conditions
under BOKF's medical  benefit plan and shall receive credit for any  deductibles
or out-of-pocket expenses previously paid.

6.12 DELIVERY OF BOKF NOTES IN LIEU OF CASH. BOKF shall, at the Closing, deliver
to any person or entity so  requesting  which  holds as of the  record  date (as
hereafter  defined) ten thousand  (10,000) shares of Mid-Cities Common Stock its
promissory note in usual and customary form acceptable to counsel for Mid-Cities
and  counsel  for BOKF  (provided,  in each  instance,  such  acceptance  is not
unreasonably withheld, delayed or denied) evidencing all, or such portion of the
Cash  Consideration  payable to such holder at the Closing as such person  shall
determine,  bearing interest at the Applicable Federal Rate (appropriate for the
term of the note as provided in the Internal Revenue Code) in such  installments
and with such maturities,  not exceeding five years from the date of Closing, as
such person or entity shall  determine  (collectively,  the "Notes");  provided,
however,  BOKF shall not issue a Note to any holder who does not (i) advise BOKF
in writing on or prior to the record date of the principal amount, installments,
and maturities such holder desires, (ii) all Notes shall be non-transferrable by
the holders thereof except by gift,  devise, or operation of law; and (iii) BOKF
shall not issue any Note unless it shall have received an opinion of its counsel
that  the  issuance  of such  Note  does  not  require  registration  under  the
Securities Act of 1933, the securities law of all applicable jurisdictions,  and
the Trust Indenture Act of 1940.

                                 - 28 -

6.13 STOCK  OPTIONS.  Mid-Cities  shall use its best  efforts to cause all Stock
Options  to be fully  exercised  in  accordance  with their  existing  terms and
conditions  immediately  prior to the  Closing  subject to  consummation  of the
Closing. With respect to any shares of Mid-Cities Common Stock that are acquired
at the Closing as a result of the  exercise of the Stock  Options,  the purchase
price for such shares  pursuant to the Stock Options shall be subtracted from or
"netted-out" of the Cash  Consideration to be paid to the holders of such shares
of  Mid-Cities  Common Stock in order to provide for a cashless  exercise of the
Stock  Options.  That is,  upon the  exercise of the Stock  Options,  the option
holder shall not be required to pay  Mid-Cities  the purchase price set forth in
the Stock  Options,  rather the purchase price shall be deducted from the amount
of cash which would  otherwise be distributed  to such option holder  ("Cashless
Stock Option  Exercise").  BOFK and Mid-Cities shall  cooperate,  and Mid-Cities
shall  use its best  efforts  to cause  the  holders  of the  Stock  Options  to
cooperate, in determining the most efficient means of satisfying the withholding
obligations of Mid-Cities as a result of the Cashless Stock Option Exercise.

6.14 1998 AUDITED FINANCIAL STATEMENTS. Mid-Cities shall cause audited financial
statements  for  calendar  year 1998 to be  prepared at the time and in the same
manner as is consistent with the prior practices of Mid-Cities.

6.15  APPROVAL OF MERGER  AGREEMENT  BY THE BOARDS OF DIRECTORS OF BOKF AND PARK
CITIES. BOKF shall use its best efforts to obtain the approval

                                 - 29 -

of this Merger  Agreement by its Board of  Directors  at the meeting  thereof on
February 23, 1999. Park Cities shall use its best efforts to obtain the approval
of this Merger  Agreement by its Board of  Directors  at the meeting  thereof on
February 24, 1999.

7.  CONDITIONS  PRECEDENT TO CLOSING BY BOKF AND PARK CITIES.  The obligation of
BOKF and Park Cities to consummate  and close this  transaction  is  conditioned
upon each and all of the following:

7.1 The  representations,  warranties and covenants of Mid-Cities and Mid-Cities
Bank shall be  materially  true at the Closing as though  such  representations,
warranties and covenants were also made at the Closing.

7.2 The Federal Reserve Board shall have approved the Merger, or issued a waiver
of approval,  in accordance  with 12 U.S.C.  Section 1842 and 12 C.F.R.  Section
225.  The Office of the  Comptroller  of the  Currency  shall have  approved the
merger of Mid-Cities Bank into Bank of Texas, National Association in accordance
with 12  U.S.C.  Section  215a  and 12  C.F.R.  Section  5.33,  and  such  other
regulatory approval as may be required is obtained.

7.3 Mid-Cities  and  Mid-Cities  Bank shall have performed and complied with, in
all material  respects,  all of their  obligations  under this Merger  Agreement
which are to be  performed  or complied  with by them prior to or on the Closing
Date.

7.4 Mid-Cities shall have delivered to BOKF an opinion of its counsel, dated the
Closing Date, in the form and content of the opinion  attached hereto as Exhibit
7.4.

                                 - 30 -

7.5 The  shareholders of Mid-Cities shall have approved this Merger Agreement in
accordance with the Texas Business  Corporation Act.  Mid-Cities Bank shall have
entered  into an agreement  to merge with Bank of Texas,  National  Association,
subject to the Closing of this Merger Agreement,  in form and content acceptable
to BOKF.

7.6 The Rowntree  Agreement and the Pier Agreement  shall have been executed and
delivered.  Each of the directors of Mid-Cities and Mid-Cities Bank set forth on
Exhibit 7.6,  which BOKF deems  critical in BOKF's good faith  judgment,  shall,
prior to or at the Closing, have entered into a non-competition agreement in the
form of Exhibit 7.6.

7.7 Neither  Mid-Cities  taken as a whole nor  Mid-Cities  Bank taken as a whole
shall have  suffered any Material  Adverse  Change (as  hereinafter  defined) in
their financial conditions,  assets, liabilities,  businesses or properties. For
purposes of this  Section 7.7  "material  adverse  change"  shall mean any event
resulting in a one-time  charge to  Mid-Cities  Bank's loan loss  reserve,  or a
reduction of Mid-Cities Bank's Tier 1 capital, of Three Hundred Thousand Dollars
($300,000)  or more  before  recording  any  entries  associated  with the Stock
Options or any Cashless  Stock Option  Exercises.  Further,  for the purposes of
this Section 7.7, an event or changes  affecting the banking industry as a whole
in the Dallas-Ft.  Worth  Metropolitan  Area shall not be considered a "material
adverse  change"  unless it affects  Mid-Cities or Mid-Cities  Bank to a greater
degree than other  similar size bank  holding  companies or banks in the Tarrant
County, Texas area.

                                 - 31 -

7.8 Holders of no more than five  percent  (5%) of the  Mid-Cities  Common Stock
shall have  dissented  under  Section 5.11 and  following of the Texas  Business
Corporation Act.

In the event any one or more of these  conditions  shall not have been fulfilled
prior to or at the  Closing,  BOKF and Park  Cities may  terminate  this  Merger
Agreement by written  notice to  Mid-Cities,  in which event neither party shall
have any further  obligation or liability to the other except the obligations of
BOKF set forth in Section 6.7 and the  obligations  of Mid-Cities and Mid-Cities
Bank set forth in Section 4.11. BOKF shall be entitled to waive  compliance with
any one or more of the conditions,  representations,  warranties or covenants in
whole or in part.

8. CONDITIONS  PRECEDENT TO CLOSING BY MID-CITIES.  The obligation of Mid-Cities
and Mid- Cities Bank to consummate and close this  transaction  are  conditioned
upon each and all of the following:

8.1 The  representations,  warranties and covenants of BOKF and Park Cities made
in  this  Merger  Agreement  shall  be  true  at  the  Closing  as  though  such
representations, warranties and covenants were also made at the Closing.

8.2 BOKF and Park Cities  shall have  performed  and  complied,  in all material
respects, with all of their obligations under this Merger Agreement which are to
be performed or complied with by them prior to or at the Closing.

8.3 BOKF shall  have  delivered  to the  Mid-Cities  an opinion of its  counsel,
Frederic  Dorwart,  Tulsa,  Oklahoma,  dated the Closing  Date,  in the form and
content of the opinion attached hereto as Exhibit 8.3.

                                 - 32 -

8.4 The Federal Reserve Board shall have approved the Merger, or issued a waiver
of approval,  in accordance  with 12 U.S.C.  Section 1842 and 12 C.F.R.  Section
225.

8.5 The shareholders of Mid-Cities shall have approved this Merger Agreement and
the  transactions   contemplated  hereby  as  required  by  the  Texas  Business
Corporations Act.

Mid-Cities  shall be  entitled to waive  compliance  with any one or more of the
conditions, representations, warranties or covenants in whole or in part. In the
event any one or more of these conditions shall not have been fulfilled prior to
or at the Closing,  Mid-Cities may terminate this Merger  Agreement by notice to
BOKF, in which event no party shall have any further  obligation or liability to
the other,  except the  obligations of BOKF set forth in Section 6.7 and Section
11 and the obligations of Mid-Cities set forth in Section 12.

9.  CLOSING.  The  Closing  ("Closing"  or "Closing  Date") of the  transactions
contemplated  by this Merger  Agreement shall take place not later than five (5)
business  days  following  the first day on which (i) BOKF and Park  Cities  can
lawfully consummate the Merger under 12 U.S.C.  Section 1842, 12 C.F.R.  Section
225 and other  applicable  laws,  rules and  regulations and (ii) Bank of Texas,
National Association and Mid-Cities Bank can merge under 12 U.S.C. Section 215a,
and 12 C.F.R. Section 5.23 and other applicable laws, rules and regulations.  In
any event,  if the Closing Date does not occur on or before August 1, 1999, then
either  BOKF or  Mid-Cities  may by notice to the other,  terminate  this Merger
Agreement, provided such notice is given on or before July 15, 1999. The Closing
shall be held at 10:00 a.m.  on the Closing  Date at the  offices of  Mid-Cities
Bank or at such other time and place as BOKF and  Mid-Cities  may agree.  At the
Closing,  BOKF, Park Cities,  Mid-Cities,  and Mid-Cities Bank shall execute and
deliver all of the documents  and take all other actions which are  contemplated
by the terms hereof.

                                 - 33 -

9.1 Without limiting the generality of Section 9 of this Merger  Agreement,  the
following actions shall be taken at the Closing concurrently. Mid-Cities shall:

9.1.1 Use  commercially  reasonable  efforts  to cause to be  delivered  to Park
Cities certificates representing the Mid- Cities Common Stock;

9.1.2  Deliver the opinion of Mid-Cities's counsel pursuant to Section 7.4; and,

9.1.3  Except as  otherwise  set forth on Exhibit  9.1.3,  cause the  employment
agreements,  plans and payments  described in Exhibit 4.15 to be terminated  and
discharged at no cost to Mid-Cities and Mid-Cities Bank.

9.2 Without limiting the generality of Section 9 of this Merger  Agreement,  the
following actions shall be taken at the Closing concurrently. BOKF shall:

9.2.1 Pay, by  corporate  check,  to each of the  holders of Mid- Cities  Common
Stock of record on the third  business  day  preceding  the Closing (the "Record
Date") the amounts to which such holders are entitled  pursuant to Section 2.7.1
or deliver  Notes in lieu  thereof as  provided  in Section  6.12;  shareholders
owning more than 25,000 shares of  Mid-Cities  Common Stock shall be entitled to
receive payment by wire transfer;  provided, however, BOKF shall not be required
to make more than seven (7) wire transfers.

                                 - 34 -

9.2.2 Deliver the opinion of BOKF's counsel pursuant to Section 8.3.

9.2.3 Cause  appropriate  evidences of the Merger to be filed in accordance with
applicable law.

10. THE ESCROW.  The Escrow  shall be  established  on the  following  terms and
conditions:

10.1 The escrow agent shall be Bank of Texas Trust Company, National Association
("Escrow Agent").

10.2 The Escrow  shall be  governed  by the  standard  form of escrow  agreement
generally in use by the Escrow Agent (the "Escrow Agreement") a copy of which is
set forth as Exhibit 10.2.

10.3 BOKF shall  deliver the Escrow  Amount to the Escrow  Agent at the Closing.
The Escrow Agent shall invest the Escrow Amount in three month  certificates  of
deposit issued by Bank of Texas,  National  Association ("BOT") on the terms and
conditions being offered by BOT to the public at the time of such investment and
shall  thereafter  renew such  certificates  of deposit upon  maturity as to the
total amount  remaining in the Escrow  after  payment of any Allowed  Claim (for
like periods and on the terms and conditions  being offered by BOT to the public
at the time of such renewal). Interest on the certificates shall be added to the
Escrow and deemed part of the Escrow Amount.

10.4 In the event BOKF claims a breach of the  representations and warranties of
Mid-Cities and Mid-Cities Bank arising under this Merger Agreement,

                                 - 35 -

BOKF  shall  give  notice  of the  claim (a  "Claim")  to  William  G. Hall (the
"Agent").  The notice shall identify the  representations  and warranties  which
BOKF claims have been  breached and describe in  reasonable  detail the basis of
the Claim.

10.5 In the event BOKF makes a Claim(s) prior to the Claim Notice Deadline,  the
Escrow Agent shall  continue to hold the Escrow  Amount  until such  Claim(s) is
resolved  by (i)  the  mutual  agreement  of  Agent  and  BOKF  or  (ii) a final
adjudication  determining  the merits of the Claim(s),  at which time the Escrow
shall terminate and the Escrow Agent shall pay (a "Claim  Payment") the Claim as
mutually agreed or finally adjudicated (an "Allowed Claim").

10.6 The Escrow shall terminate at the later of the Claim Notice Deadline or the
date on which all timely noticed  Claims have been resolved by mutual  agreement
or final  adjudication  and all Allowed Claims,  if any, shall have been paid to
BOKF.

10.7 Upon  termination of the Escrow,  the Escrow Amount remaining in the Escrow
shall be delivered to the holders of Mid-Cities  Common Stock on the Record Date
in accordance  with their  respective  interests,  including any Cashless  Stock
Option Exercises.

10.8 The rights of the holders of  Mid-Cities  Common Stock to receive  payments
from the Escrow shall not be assignable or  transferable  except by operation of
law or by intestacy or with the  approval of BOKF (which  approval  shall not be
unreasonably  withheld,  delayed,  or denied) and will not be  evidenced  by any
certificate or other evidence of ownership.

                                 - 36 -

10.9 BOKF shall pay the fees and costs of the Escrow  Agent with  respect to the
Escrow.

10.10 The Agent shall be William G. Hall. The holders of Mid-Cities Common Stock
on the Record Date may by the vote of a majority in interest  and upon notice to
BOKF change the agent.  The Agent shall not be deemed a fiduciary of the holders
of  Mid-Cities  Common  Stock and shall be liable to such holders only for gross
negligence  or  intentional  wrongdoing.   11.  MISCELLANEOUS  PROVISIONS.   The
following miscellaneous provisions shall apply to this Agreement:

11.1 All notices or advices  required or permitted to be given by or pursuant to
this Agreement, shall be given in writing. All such notices and advices shall be
(i)  delivered  personally,  (ii)  delivered  by  facsimile or delivered by U.S.
Registered or Certified Mail,  Return Receipt Requested mail, or (iii) delivered
for overnight  delivery by a nationally  recognized  overnight  courier service.
Such  notices  and  advices  shall be deemed  to have  been  given (i) the first
business  day  following  the date of delivery  if  delivered  personally  or by
facsimile,  (ii) on the third  business  day  following  the date of  mailing if
mailed by U.S. Registered or Certified Mail, Return Receipt Requested,  or (iii)
on the date of receipt if  delivered  for  overnight  delivery  by a  nationally
recognized overnight courier service. All such notices and advices and all other
communications related to this Agreement shall be given as follows:

                                 - 37 -

BOKF and Park Cities:

James A. White, Executive Vice President

BOK  FINANCIAL  CORPORATION  P.O.  Box 2300  Tulsa,  OK 74192  (918)  588-6853 -
Facsimile

                                   and

Frederic Dorwart, Secretary and General Counsel to BOK Financial Corporation Old
City Hall 124 East Fourth Street Tulsa, OK 74103 (918) 583-8251 - Facsimile

Mid-Cities, and Mid-Cities Bank:

Paul A. Rowntree  Chairman of the Board and President  Mid-Cities  National Bank
500 Grapevine Highway P.O. Box 1588 Hurst,  Texas 76053 817-485-6660 - Telephone
817-485-6756 - Facsimile

                                   and

Sanford M. Brown  Bracewell & Patterson,  L.L.P.  500 North Akard Street,  Suite
4000 Dallas, Texas 75201-3387 214-758-1093 - Telephone 214-758-1010 - Facsimile

or to such other address as the party may have furnished to the other parties in
accordance  herewith,  except  that  notice  of  change  of  addresses  shall be
effective only upon receipt.

11.2 This  Agreement  shall be subject to, and  interpreted by and in accordance
with, the laws (excluding conflict of law provisions) of the State of Texas.

                                 - 38 -

11.3 This  Agreement  is the entire  Agreement  of the  parties  respecting  the
subject  matter  hereof.  There  are no  other  agreements,  representations  or
warranties, whether oral or written, respecting the subject matter hereof.

11.4 No course of prior  dealings  involving  any of the  parties  hereto and no
usage of trade shall be relevant or advisable to interpret,  supplement, explain
or vary any of the terms of this Agreement, except as expressly provided herein.

11.5 This Agreement,  and all the provisions of this Agreement,  shall be deemed
drafted by all of the parties hereto.

11.6 This Agreement shall not be interpreted  strictly for or against any party,
but  solely in  accordance  with the fair  meaning of the  provisions  hereof to
effectuate the purposes and interest of this Agreement.

11.7 Each party  hereto has entered  into this  Agreement  based solely upon the
agreements,  representations and warranties  expressly set forth herein and upon
his  own  knowledge  and  investigation.  Neither  party  has  relied  upon  any
representation   or  warranty  of  any  other  party  hereto   except  any  such
representations or warranties as are expressly set forth herein.

11.8 Each of the persons  signing  below on behalf of a party hereto  represents
and warrants  that he or she has full  requisite  power and authority to execute
and  deliver  this  Agreement  on  behalf of the  parties  for whom he or she is
signing and to bind such party to the terms and conditions of this Agreement.

11.9 This  Agreement  may be  executed in  counterparts,  each of which shall be
deemed an original. This Agreement shall become effective only when all

                                 - 39 -

of the parties  hereto shall have executed the original or  counterpart  hereof.
This  agreement may be executed and delivered by a facsimile  transmission  of a
counterpart signature page hereof.

11.10 In any action brought by a party hereto to enforce the  obligations of any
other party hereto,  the prevailing  party shall be entitled to collect from the
opposing  party to such  action such  party's  reasonable  litigation  costs and
attorneys  fees  and  expenses  (including  court  costs,   reasonable  fees  of
accountants and experts, and other expenses incidental to the litigation).

11.11 This Agreement shall be binding upon and shall inure to the benefit of the
parties and their respective successors and assigns.

11.12  This  is not a third  party  beneficiary  contract  except  as  otherwise
expressly  stated  herein.  No person or entity other than a party  signing this
Agreement  shall  have any  rights  under  this  Agreement  except as  otherwise
expressly stated herein.


11.13  This  Agreement  may be  amended  or  modified  only in a  writing  which
specifically references this Agreement.

11.14     This Agreement may not be assigned by any party hereto.

11.15 A party to this  Agreement  may decide or fail to  require  full or timely
performance  of any  obligation  arising under this  Agreement.  The decision or
failure  of a  party  hereto  to  require  full  or  timely  performance  of any
obligation  arising  under this  Agreement  (whether on a single  occasion or on
multiple occasions) shall not be deemed a waiver of any such obligation. No such
decisions or failures shall give rise to any claim of estoppel, laches,

                                 - 40 -

course of dealing,  amendment of this  Agreement by course of dealing,  or other
defense of any nature to any obligation arising hereunder.

11.16 The  repudiation,  breach,  or failure to perform any  obligation  arising
under this Agreement by a party after reasonable  notice thereof shall be deemed
a repudiation,  breach,  and failure to perform all of such party's  obligations
arising under this Agreement.

11.17 Time is of the essence with respect to each obligation  arising under this
Agreement.  The failure to timely perform an obligation  arising hereunder shall
be deemed a failure to perform the obligation.

11.18 All actions taken and  documents  delivered at the Closing shall be deemed
to have been taken and  executed  simultaneously  and no action  shall be deemed
taken nor any document delivered until all have been taken and delivered.

11.19 Any information delivered by way of exhibit or schedule in connection with
this agreement shall be deemed delivered for the purpose of any other exhibit or
schedule which calls for such information.

Dated and effective the date first set forth above.

MID-CITIES BANCSHARES, INC., a Texas Corporation

By      /s/ William G. Hall
       ------------------------------------- 
       William G. Hall, President

MID-CITIES NATIONAL BANK, a national banking association

By       /s/ William G. Hall 
        -------------------------------------
        William G. Hall, Vice Chairman

                                 - 41 -

BOK FINANCIAL CORPORATION

By       /s/ Stanley A. Lybarger
         -------------------------------------
         

PARK CITIES BANCSHARES, INC., a Texas Corporation

By   /s/ C. Fred Ball, Jr.
     -------------------------------------

                                 - 42 -

                               EXHIBIT 4.3
                                   TO
                            MERGER AGREEMENT

                              Subsidiaries

                                  None

                                 - 43 -

                              EXHIBIT 4.6.3
                                   TO
                            MERGER AGREEMENT

                          Material Liabilities

                                  None

                                 - 44 -

                               EXHIBIT 4.7
                                   TO
                            MERGER AGREEMENT

             Conduct of Business Prior to Closing Exceptions

                                  None

                                 - 45 -

                               EXHIBIT 4.9
                                   to
                            MERGER AGREEMENT

Section 4.9.1

None, except, the following:

Space Lease

Mid Cities Bank leases 13,162 square feet of office space in the Mid-Cities Bank
Building located at 500 Grapevine Hwy., Hurst, Texas. The terms of the operating
lease are:





   Lease Expiration Date
March 31, 2001


                  Annual Base Rent
 $  299,435


                  Escalation Billed for 1998
     74,659


                  Total Lease Billed for 1998
 $  374,094


The Base Rent remains the same until the lease expiration date of Mach 31, 2001.
Escalation increases are based on Mid Cities Bank's share of the annual expenses
incurred by the building.

Data Processing Services

Mid Cities Bank has a contract  with Fiserv - Houston  for data  processing  and
item  processing   services.   The  product  that  the  Bank  uses  is  Fiserv's
CustomerFile  system.  The contract expires on September 15, 2001. A copy of the
data processing contract, as amended, has been provided to BOKF.

FiSi Madison Club Account Services

Mid Cities Bank has contracted with FiSi Madison to provide Club deposit account
services for all Premier and Premier Plus account customers. Mid-Cities Bank has
provided a copy of the agreement with FiSi Madison to BOKF. The Agreement may be
canceled at any time by giving a 120 day notice of termination.

Check Printing  -  Deluxe

Mid Cities Bank has  contracted  with  Deluxe,  Inc. to provide  check  printing
services  to the Bank.  Mid  Cities  Bank has  provided  BOKF with a copy of the
agreement.

Section 4.9.2 None; except the following:

Mid-Cities Bank has requested additional  information  concerning the Escalation
billed for 1998 by the landlord.  Mid-Cities  has notified the landlord that the
Bank will continue to pay at the original  escalation rate  established for 1998
until the landlord  provides adequate evidence of costs related to the operation
of the building and the  computation  of Mid-Cities  Bank's share of such costs.
Mid-Cities  Bank has accrued a payable in the amount  billed by the landlord for
the increased escalation of 1998.

                                 - 46 -

                              EXHIBIT 4.10
                                   TO
                            MERGER AGREEMENT

                           Pending Litigation

None, except Mid-Cities Bank is party to the following matter:

Cause no.  348-176164-98,  Williams Chrysler  Plymouth,  Inc. dba Roger Williams
Chrysler  Plymouth  Dodge v. Andy Joe Winters,  C&D  Automotive  Service,  James
Michael Davis, Pete Calady, and Mid-Cities National Bank.

This is an action  brought by the  Plaintiff  asserting an interest in inventory
which  was  owned by C&D  Automotive  Services  and  which is  currently  in the
possession of Mid-Cities National Bank.  Plaintiff's  Original Petition does not
allege any specific  dollar amount,  but merely alleges damages in excess of the
minimum jurisdictional limits of the Court.

C&D  Automotive  furnished to the Plaintiff  through Andy Winters  various model
cars  to be sold by the  Plaintiff  at its  dealership  and at Auto  Races.  Mr.
Winters was an employee of the Plaintiff and Mr. Winters, it is alleged,  forged
the  signature  on  some  checks  paid  to C&D  Automotive.  Mid-Cities  Bank is
asserting a lien on the inventory of C&D Automotive.  This litigation arose when
the Plaintiff  stopped payment on a $72,000.00 check which had been deposited by
C&D Automotive  into its account with  Mid-Cities  National Bank thereby causing
C&D's account to be overdrawn in the approximate sum of $52,000.  As of the date
hereof,  all parties are  represented by attorneys and the attorneys are working
toward an  agreement  to sell the  inventory  with the  proceeds to be placed in
escrow.

Mid-Cities  Bank has  recorded  a reserve of  $30,000  related  to this  matter.
Further,  Mid-Cities  Bank has a legal  reserve  of $5,000 for  attorney's  fees
related to this matter.

                                 - 47 -

                              EXHIBIT 4.11
                                   TO
                            MERGER AGREEMENT

                             Brokerage Fees

None;  except,  a fee due  SAMCO  Capital  Markets  equal to the sum of (i) five
percent  (5%)  of the  first  One  Million  Dollars  ($1,000,000)  of  the  Cash
Consideration,  (ii)  four  percent  (4%)  of the  second  One  Million  Dollars
($1,000,000)  of the Cash  Consideration,  (iii) three percent (3%) of the third
One Million  Dollars  ($1,000,000) of the Cash  Consideration,  (iv) two percent
(2%) of the fourth One Million Dollars  ($1,000,000) of the Cash  Consideration,
and (v) one  percent  (1%) of all of the Cash  Consideration  in  excess of Four
Million Dollars ($4,000,000).

                                 - 48 -

                              EXHIBIT 4.15
                                   TO
                            MERGER AGREEMENT

                  Employee Contracts and Benefit Plans

Auto Allowances

Mid-Cities  Pays  Chris  Strittmatter  $500  per  month  as  an  auto  allowance
Mid-Cities reimburses Steve Ewing his direct auto expenses for gas and repairs

Mid-Cities Bank has committed to pay the following incentives:

M. Chris  Strittmatter - 10% of real estate loan interim commitment fees charged
on loans  made by him.  Such  amount  is  accrued  through  the year and paid in
January of the following year.

All loan  officers  (other than Paul  Rowntree  and Vikki Pier) are  eligible to
receive 5% of credit life premiums collected on loans that he or she makes.

Mid-Cities  Bank has an incentive  program titled the "Bone Loan." Loan officers
(other than Paul Rowntree and Vikki Pier) that make a qualified  "Bone Loan" are
paid .25% of the principal amount of such loan.  Payments are made at the end of
the year.

Mid-Cities Bank has the following employee benefits plans:

Health/Dental/Life Insurance

Mid-Cities Bank has arranged for health insurance for eligible employees through
Aetna and for dental and life insurance  through  Guarantee  Life. The insurance
rate  commitment is through April 1, 1999.  The Bank has not renewed or extended
these policies as of the date hereof.  Information related to health, dental and
life insurance has been provided to BOKF.

Other Benefits

Other  employee  benefits,  such as sick and vacation time, are described in the
Employee Handbook that has been provided to BOKF.

401(k) Plan

Mid-Cities  Bank has a 401(k)  plan that  does  allow  for  additional  employer
discretionary  contribution;  Mid-Cities has made contribution match of up to 7%
of an eligible employee's salary in 1996, 1997 and 1998. Mid-Cities anticipates

                                 - 49 -

making a similar contribution before Closing of the Merger.  Mid-Cities Bank has
not  made  and  does  not  anticipate   making  any   additional   discretionary
(non-matching) contributions to the Plan.

                                 - 50 -

                              EXHIBIT 4.16
                                   TO
                            MERGER AGREEMENT

                             ADA Exceptions

Mid-Cities  Bank leases space from the Mid-Cities  Bank Building.  This Building
was built in 1981,  prior to the  enactment of the Americans  with  Disabilities
Act. Since that date, the Bank and/or Building have not completed  remodeling of
the sort that would  require the Bank or the  Building  to come into  compliance
with the ADA's requirements. Mid-Cities Bank has not discussed with the landlord
as to  whether  the  entrances,  elevators  and  guest  baths  comply  with ADA.
Mid-Cities  Bank has not  reviewed  compliance  with ADA that might be  required
should the Bank remodel the Drive-thru facility.  The lease between the Bank and
the Building was prepared before the ADA was enacted and,  therefore,  is silent
with respect to which party is responsible for the cost of ADA  compliance.  The
Bank  anticipates that the landlord will expect the Bank to share in the cost of
any ADA compliance.

                                 - 51 -

                              EXHIBIT 6.3.7
                                   TO
                            MERGER AGREEMENT

                         Compensation Exceptions

Mid-Cities Bank has paid 1998 bonuses and had implemented 1999 salary increases.
Mid-Cities  Bank has  provided  BOKF with a listing of 1998 bonus  payments  and
concurrent 1999 salaries in place.

                                 - 52 -

                               EXHIBIT 6.4
                                   TO
                            MERGER AGREEMENT

                         Principal Shareholders

The  following  persons  comprise  the  Board of  Directors  of  Mid-Cities  and
Mid-Cities Bank:


          Name                               Shares


        Paul A. Rowntree                     267,922


        William G. Hall                       96,925


        Vikki L. Pier                         62,096


        Lois Taylor                           54,492


        Dr. L.L. Golden                       31,384


        William P. Martin                     25,384


        Greg Regian                           10,000


        Dr. J.P. Jones                         6,000


        Russell Johnson                        3,129


        Yale Lary                              1,000


        Louis Miller                           1,000


        Total owned by Directors             559,332






        Total Shares Currently Outstanding   764,421


        Percentage of Total                       73.2%


                                 - 53 -

                               EXHIBIT 6.8
                                   TO
                            MERGER AGREEMENT

                          Employment Agreements

                   Rowntree Agreement Attached Hereto

                     Pier Agreement Attached Hereto

                                 - 54 -

                               EXHIBIT 7.4
                                   TO
                            MERGER AGREEMENT

                      Mid-Cities Counsel's Opinion

[To be  prepared  by the mutual  agreement  of  counsel  to BOKF and  counsel to
Mid-Cities]

                                 - 55 -

                               EXHIBIT 7.6
                                   TO
                            MERGER AGREEMENT

                        Non-Competition Agreement

Rowntree Agreement attached as prior Exhibit.

Pier Agreement attached as prior Exhibit.

Directors to provide a non-compete agreement:

Paul A. Rowntree in the form included in the Rowntree Employment Agreement

William G. Hall in the form attached

Vikki L. Pier in the form attached

Lois Taylor in the form attached

Directors  that  Rowntree,  Hall and Pier will use best  efforts  to cause  such
directors to sign a non-compete agreement in the form attached:

Dr. L.L. Golden

William P. Martin

Greg Regian

Dr. J.P. Jones

Russell Johnson

Yale Lary

Louis Miller

                                 - 56 -

                               EXHIBIT 7.6
                                   TO
                            MERGER AGREEMENT

                        AGREEMENT NOT TO COMPETE

This   Agreement  Not  to  Compete   ("Agreement")   is  made  effective  as  of
_____________, 199___ (the "Effective Date") between:

(i) _____________________ ("Principal"); and,

                (ii) BOK Financial Corporation ("BOKF").

In consideration of the mutual covenants contained herein, the adequacy of which
is hereby  expressly  acknowledged,  and  intending to be legally  bound hereby,
Principal and BOKF agree as follows:

(1)  PURPOSE OF THIS  AGREEMENT  NOT TO COMPETE.  Principal  is a key officer or
director and shareholder of Mid-Cities  and/or Mid-Cities Bank. The shareholders
of  Mid-Cities  and  Mid-Cities  Bank and BOKF  are  contemporaneously  herewith
entering into that certain Merger Agreement dated effective as of February, 1999
to which reference is hereby made (the "Merger Agreement"). The Merger Agreement
constitutes  the  sale  of  the  goodwill  of the  business  of  Mid-Cities  and
Mid-Cities Bank to BOKF.  Principal  acknowledges  that competition by Principal
with BOKF would damage the goodwill being sold by Principal. The purpose of this
agreement is to set forth the terms and conditions on which Principal agrees not
to compete with BOKF. The defined terms set forth herein shall have the meanings
set forth in the Merger Agreement.

(2)  Principal  hereby  agrees  that,  from and after the  Closing  for one year
following the Closing, Principal shall not directly or indirectly (whether as an
officer,  director,  employee,  partner,  stockholder,   creditor  or  agent  or
representative  of other persons or entities or in any other  manner)  engage in
the banking business in Dallas or Tarrant Counties.

(3) Paragraph 2 hereof shall not apply to any investment by the Principal in any
widely-held  class of  securities  of any  banking  business,  which  investment
comprises less than 5% of the total number of shares of that class of securities
outstanding.

(4) Principal agrees that:

(1) This  Agreement is entered into in connection  with the sale of the goodwill
of Mid-Cities and Mid-Cities Bank.

(2) The restrictions  imposed by this Agreement  (particularly  the geographical
and time restrictions) are fair, reasonable and necessary

                                 - 57 -

to protect the goodwill of Mid-Cities and Mid-Cities Bank which is being sold to
BOKF.

(3) Any remedy at law for any breach of this Agreement  would be inadequate and,
in the  event of any such  breach,  BOKF  shall be  entitled  to  immediate  and
permanent  injunctive  relief to preclude  any such  breach (in  addition to any
remedies  at law to  which  BOKF  may be  entitled)  without  any  necessity  of
establishing irreparable injury or posting bond or security therefore.

(4) Without  limiting the generality of the  obligations  imposed by Paragraph 2
hereof, Principal agrees that the Principal shall not solicit
persons or entities who are  customers or clients of Mid-Cities  and  Mid-Cities
Bank at the date hereof or solicit employees of Mid-Cities or Mid-Cities Bank to
seek  employment  with any person or entity  except  BOKF and its  subsidiaries,
whether,  in either case,  such  solicitation is made within or without the area
described in Paragraph 2 hereof.

(5) Principal represents that Principal is entering into this Agreement in order
to  induce  BOKF  to  enter  into  and  consummate  the  Merger   Agreement  and
acknowledges that the consideration  received in the Merger is full and adequate
consideration for the promises of Principal made herein.

(5) MISCELLANEOUS.  The following  miscellaneous  provisions shall apply to this
Agreement:

(1) This  Agreement  shall be subject to, and  interpreted  by and in accordance
with, the laws of the State of Texas  (excluding the conflicts of law provisions
thereof).

(2) This Agreement is the entire agreement of the parties respecting the subject
matter  hereof.  There  are  no  other  agreements,  whether  oral  or  written,
respecting the subject matter hereof.

(3) This  Agreement  may be  executed  in  counterparts,  each of which shall be
deemed an original.  This Agreement shall become  effective only when all of the
parties  hereto shall have executed the original or a counterpart  hereof.  This
Agreement may be delivered by facsimile  transmission of an executed original or
counterpart hereof.

(4) In any action  brought by a party hereto to enforce the  obligations  of any
other party hereto,  the prevailing  party shall be entitled to collect from the
opposing parties to such action such party's reasonable attorneys fees and costs
(including  court costs,  reasonable fees of accountants and experts,  and other
expenses incidental to the action).

                                 - 58 -

(5) This is not a third party  beneficiary  contract.  No person or entity other
than an express party hereto shall have any rights hereunder.

(6) This  Agreement  shall be  binding  upon the  parties  and their  respective
successors  and assigns.  The rights of the parties under this Agreement may not
be assigned without the prior written consent of the parties hereto.

By ---------------------------------

BOK FINANCIAL CORPORATION

By --------------------------------

                                 - 59 -

                               EXHIBIT 8.3
                                   TO
                            MERGER AGREEMENT

                         BOKF Counsel's Opinion

[To be  prepared  by the mutual  agreement  of  counsel  to BOKF and  counsel to
Mid-Cities]

                                 - 60 -

                              EXHIBIT 9.1.3
                                   TO
                            MERGER AGREEMENT

                     EMPLOYMENT AGREEMENT EXCEPTIONS

                                  None

                                 - 61 -




                         C O N F I D E N T I A L

                          ACQUISITION DOCUMENT
                          ====================
        (CASH PURCHASE AND TRIPARTITE REVERSE MERGER TRANSACTION)

                                  ****

                            MERGER AGREEMENT

                                  AMONG

                       BOK FINANCIAL CORPORATION,

                      PARK CITIES BANCSHARES, INC.,

                         PC INTERIM STATE BANK,

                        SWISS AVENUE STATE BANK,

                                   AND

                          CERTAIN SHAREHOLDERS
                                   OF
                            SWISS AVENUE BANK

                                 * * * *

                    AGREEMENT DATE OF MARCH 4, 1999

                                  INDEX
                                   TO
                            MERGER AGREEMENT


               SECTION                                           PAGE






1.    Purpose of this Merger Agreement .                    1


2.    Organization of Park Cities. .                        2


3.    The Merger. . . . . . . .                             3


4.    Effect of the Merger. . .
      5


5.    Representations and Warranties of Swiss Avenue . .    5


6.   Representations and Warranties of BOKF .               14


7.    Covenants . . . . . . . .                             16


8.   Conditions Precedent to Closing by BOKF and Park Cities . . 27


9.    Conditions Precedent to Closing by Swiss Avenue. .         29


10.   Closing . . . . . . . . .                                  30


11.   Escrow. . . . . . . . . .                                  32


12.   Miscellaneous Provisions.                                  34


         EXHIBIT CAPTION
 EXHIBIT NUMBER


      Principal Shareholders
         1.3


      Subsidiaries
         5.3


      Material Liabilities
         5.6.3


      Conduct of Business Prior to Closing Exceptions
         5.7


      Contracts and Commitments
         5.9


      Litigation
         5.10


      Brokers and Commissions
         5.11


      Employee Contracts and Benefit Plans
         5.15


      Compensation Exceptions
         7.3.7


      Schieffer Agreement
         7.8


      Letter Agreements With Senior Officers
         7.13


      Swiss Avenue Counsel's Opinion
         8.4


      Non-Competition Agreement
         8.6


      BOKF Counsel's Opinion
         9.3


      Employment Agreement Exception
        10.1.3


MERGER AGREEMENT

This merger agreement  ("Merger  Agreement") is made as of March 4, 1999 (the
"Agreement Date") among:

(i) Swiss Avenue State Bank ("Swiss Avenue Bank");

(ii) The  shareholders  of Swiss  Avenue  set forth in Exhibit  1.3  ("Principal
Shareholders");

(iii) PC Interim State Bank ("PC");

(iv)     BOK Financial Corporation ("BOKF"); and,

(v) Park Cities Bancshares, Inc, a Texas Corporation ("Park Cities").

In consideration of the mutual covenants contained herein, the adequacy of which
is hereby  expressly  acknowledged,  and  intending to be legally  bound hereby,
Swiss Avenue  Bank,  Principal  Shareholders,  PC, BOKF and Park Cities agree as
follows:

1.   PURPOSE OF THIS MERGER  AGREEMENT.  The purpose of this Merger Agreement is
     as follows:

1.1 Swiss  Avenue Bank is a bank  organized in  accordance  with the laws of the
State of Texas and subject to regulation by the Texas Banking Department and the
Federal Deposit Insurance Corporation.  The issued and outstanding capital stock
of Swiss  Avenue Bank  consists  solely of a single  class of 214,631  shares of
common stock of a par value of $8.00 per share ("Swiss  Avenue Common Stock") of
which  214,631  shares are issued and  outstanding  at the Agreement  Date.  The
Common  Stock of Swiss Avenue Bank issued and  outstanding  as of the Closing is
hereafter called the "Swiss Avenue Common Stock".

1.2 BOKF is a bank  holding  company  organized  under  the laws of the State of
Oklahoma. BOKF is subject to regulation by the FRB. BOKF owns all of

the  capital  stock  of Park  Cities.  Park  Cities  is a bank  holding  company
organized  under the laws of the  State of Texas.  Park  Cities  is  subject  to
regulation by the FRB. The issued and  outstanding  capital stock of Park Cities
consists  solely of  1,193.034  shares of common  stock,  par value of $5.00 per
share (the "Park Cities Shares").

1.3 The  Principal  Shareholders  set forth on Exhibit 1.3 own not less than and
sixty percent (60%) of the Swiss Avenue Common
Stock.

1.4 The  purpose  of  this  Merger  Agreement  is to set  forth  the  terms  and
conditions  on which (i) PC shall be formed  and (ii) Swiss  Avenue  Bank and PC
shall  merge.  This  Merger  Agreement  shall  constitute  a plan of merger  for
corporate  law  purposes  and for  federal  income tax  purposes  under  Section
368(a)(2)(D) of the Internal Revenue Code.

1.5 Park Cities  owns all of the issued and  outstanding  capital  stock of Park
Cities Corporation,  a Nevada  Corporation.  Park Cities Corporation owns all of
the issued and outstanding capital stock of Bank of Texas,  National Association
("BOT").

1.6 PC shall be an interim  state bank  organized by Park Cities for the purpose
of facilitating the transaction  contemplated by this Merger Agreement  pursuant
to 7 T.A.C. Section 15.23, as hereafter provided.

2.  ORGANIZATION OF PC. Prior to the Closing (as hereafter  defined) Park Cities
shall  organize  PC  as an  interim  state  bank  on  the  following  terms  and
conditions:

2.1 Park  Cities  shall cause PC to be  organized  in  accordance  with 7 T.A.C.
Section 15.23.

2.2 Park Cities shall own all of the issued and outstanding capital stock of PC.

2.3 PC shall be organized  solely to facilitate the transaction  contemplated by
this Merger Agreement.

2.4 Park Cities shall cause PC to execute and deliver  this Merger  Agreement at
such time as PC may enter into legally valid  agreements  in  accordance  with 7
T.A.C. Section 15.23.

3. THE MERGER. On the terms and conditions  hereafter stated, PC shall be merged
into Swiss Avenue Bank on the following terms and  conditions:  3.1 Swiss Avenue
Bank shall be the receiving corporation ("Surviving Corporation").

3.2 The  Articles of  Association  of Swiss Avenue Bank shall be the Articles of
Association of the Surviving Corporation until changed as provided by law.

3.3 The  Bylaws  of Swiss  Avenue  Bank  shall be the  Bylaws  of the  Surviving
Corporation until changed as provided by law.

3.4 The  officers of Swiss  Avenue Bank shall be the  officers of the  Surviving
Corporation, until changed as provided by law.

3.5 The  directors of Swiss Avenue Bank shall be the  directors of the Surviving
Corporation  until  changed as provided by law;  provided,  however,  Stanley A.
Lybarger,  C. Fred Ball,  Jr.,  and Tom E. Turner shall also be directors of the
Surviving Corporation.

3.6 The Merger  shall be  effective  at the  Closing (as  hereafter  provided in
Section 9).

3.7 Each share of Swiss Avenue Common Stock shall,  subject to the provisions of
7 T.A.C.  Section  15.23 and Section 5.11 and  following  of the Texas  Business
Corporation Act, automatically and without any action on the part

of the holder  thereof,  be  cancelled  and  converted  solely into the right to
receive:

3.7.1 At  Closing  an  amount  of United  States  Dollars  equal to (x) the Cash
Consideration  (as  hereafter  defined)  less the Escrow  Amount  (as  hereafter
defined) divided by (y) the number of shares of Swiss Avenue Common Stock; and,

3.7.2 Upon termination of the Escrow,  her, his, or its  proportionate  share of
the remaining Escrow Amount, as provided in Section 10.

3.8  The  Cash   Consideration   shall  equal  (i)  Thirty-Two  Million  Dollars
($32,000,000)  less  (ii) the  Transaction  Costs  (as  hereafter  defined)  The
Transaction Costs are all accounting,  brokerage,  commission,  and legal costs,
arising  or  resulting  from,  the   negotiation,   execution,   delivery,   and
consummation of this Agreement incurred by Swiss Avenue Bank in excess of Thirty
Thousand Dollars ($30,000).

3.9       The Escrow Amount shall be Five Hundred Thousand Dollars ($500,000).

3.10  Notwithstanding  the  provisions  of Section 3.7, all holders of shares of
Swiss Avenue Bank Common Stock electing to dissent to the Merger pursuant to the
provisions  of 7 T.A.C.  Section 110 and the Section  5.11 and  following of the
Texas  Business  Corporation  Act shall have only those rights set forth in said
sections.

4. EFFECT OF THE MERGER. The Merger shall have the following effects:

4.1 The corporate franchise,  existence,  rights and liabilities of Swiss Avenue
Bank shall continue unaffected and unimpaired.

4.2 The corporate  franchise,  existence,  rights and liabilities of PC shall be
merged into Swiss Avenue Bank and the separate existence of PC shall cease.

4.3 Swiss  Avenue Bank shall have and be vested with all of the rights,  powers,
assets, property, liabilities and obligations of PC.

5. REPRESENTATIONS AND WARRANTIES OF SWISS AVENUE BANK. Swiss Avenue Bank hereby
represents and warrants to BOKF and Park Cities that:

5.1  INCORPORATION  AND  CORPORATE  POWER.  Swiss  Avenue  Bank  is a bank  duly
organized,  validly existing and in good standing under the laws of the State of
Texas. Swiss Avenue Bank has all the corporate power and authority necessary and
required to own its  properties  and to conduct its business as such business is
now being  conducted.  Swiss Avenue Bank is (A) in material  compliance with all
applicable provisions of all applicable federal, state and local statutes, laws,
regulations,  ordinances and other requirements of any governmental  authorities
(including, but not limited to, whether similar or dissimilar, the Texas Finance
Code, the Texas Business  Corporation Act, and the filing of all  administrative
reports  and the  payment  of all fees) in effect as of the date of this  Merger
Agreement  and (B)  shall be in  material  compliance  therewith  at the time of
Closing.

5.2       CAPITAL.

5.2.1 The Principal Shareholders are the record and beneficial owners of (i) not
less than sixty percent (60%) of the Swiss Avenue Common Stock. The Swiss Avenue
Common

Stock is and at the Closing  will be all of the issued and  outstanding  capital
stock of Swiss  Avenue  Bank.  No person  or  entity  has any right or option to
acquire any capital stock of Swiss  Avenue.  The Swiss Avenue Common Stock shall
consist at the Closing of no more than 214,631 shares.

5.3  CAPITALIZATION  OF SWISS AVENUE BANK. The Swiss Avenue Bank Common Stock is
validly  issued and  outstanding,  fully paid and  non-assessable.  There are no
outstanding  subscriptions,  conversion privileges,  calls, warrants, options or
agreements  obligating  Swiss  Avenue  Bank to issue,  sell or dispose of, or to
purchase,  redeem or  otherwise  acquire  any shares of  capital  stock of Swiss
Avenue Bank  (collectively,  "options  and  rights").  None of the Swiss  Avenue
Common  Stock has been  issued or  disposed of in  violation  of any  preemptive
rights of any  shareholder  nor in  violation  of any  agreement  to which Swiss
Avenue Bank was or is a party.  Swiss Avenue Bank has no  subsidiaries  and does
not own,  nor have the right or  obligation  to  acquire,  any  shares of equity
securities of any corporation. except as set forth in Exhibit 5.3.

5.4 NON-VIOLATION OF OTHER AGREEMENTS. The execution and delivery of this Merger
Agreement, and the compliance with its terms and provisions by Swiss Avenue Bank
(including the execution and delivery of any document required to be executed by
Swiss Avenue Bank) will not breach any  agreement,  lease,  or obligation of any
nature, whether similar or dissimilar, by which Swiss Avenue Bank is bound.

5.5       FINANCIAL STATEMENTS. Swiss Avenue Bank has delivered to BOKF, or will

have  delivered  to BOKF  prior  to the  Closing  as soon  as  future  financial
statements are available, copies of the following ("Financial Statements"):

5.5.1    Financial Statements (Audited), December 31, 1996, 1997, and 1998;

5.5.2 Year to Date Monthly Financial  Statement  (Unaudited) for the most recent
month as is available as of the Closing.

The  Financial  Statements  described in Section 5.5.1 (A) have been prepared or
will have  been  prepared  in  accordance  with  generally  accepted  regulatory
accounting principles, consistently applied and (B) fairly reflect the financial
condition and results of operations  for the  indicated  periods.  The Financial
Statement  described in Sections 5.5.2 fairly  reflects the financial  condition
and  results of  operations  for the  period  indicated,  subject to  immaterial
year-end adjustments and the omission of footnotes.

5.6  MATERIAL  LIABILITIES.  Swiss  Avenue  Bank  has  no  material  liabilities
(including,  but not limited to, whether  similar or dissimilar,  liabilities or
obligations for taxes, whether due or to become due) except:

5.6.1 Those fully reflected or reserved against, or otherwise disclosed,  in the
Financial Statements;

5.6.2 Those  incurred with due care since December 31, 1998 in the normal course
of business consistent with past practices; and,

5.6.3 Those specifically disclosed in Exhibit 5.6.3 to this Merger Agreement.

5.7 CONDUCT OF BUSINESS PRIOR TO CLOSING. Except as set forth in Exhibit 5.7,

since  December 31, 1998, and until the Closing of this  transaction,  (A) Swiss
Avenue Bank has carried on and will carry on its  business  only in the ordinary
and normal course  consistent  with past practices and (B) has not and will not,
without  the  prior  consent  of BOKF:  5.7.1  Incur any  material  liabilities,
commitments or  obligations,  contingent or otherwise,  or dispose of any of its
assets,  except in the  ordinary  course of its  business  consistent  with past
practices and for the purpose of carrying on the business as a going concern;

5.7.2 Incur any bank or other  institutional  debt,  or enter into any agreement
for the borrowing of money;  except borrowing of federal funds or borrowing from
the Federal Home Loan Bank by Swiss Avenue Bank consistent with past practices;

5.7.3 Suffer any material  adverse change in the financial  conditions,  assets,
liabilities, business or property of Swiss Avenue Bank taken as a whole; and,

5.7.4 Make any  material  change in the manner in which  business  is  conducted
(including,  without  limitation,  branch  relations,  branch closings,  and any
material change in products offered to customers).

5.8 TAX  RETURNS/REPORTS.  Swiss  Avenue Bank has duly filed all tax reports and
returns required to be filed by it and has duly paid all taxes and other charges
claimed to be due from it by federal,  state and local  taxing  authorities.  No
waivers of the statute of limitation have been issued with respect to unaudited

years. Swiss Avenue Bank has no knowledge of any facts which could reasonably be
expected  to result in a  material  deficiency  with  respect to  unaudited  tax
returns  which would  result in a material  adverse  effect on Swiss Avenue Bank
taken as a whole.  No payment of any kind made to any  employee of Swiss  Avenue
Bank is or will be an excess  parachute  payment in respect of the Merger within
the meaning of Section 280G of the Internal Revenue Code.

5.9       CONTRACTS AND COMMITMENTS.

5.9.1 A list of all  contracts and  commitments,  other than credit and lending,
deposit  or  borrowing  transactions  entered  into in the  ordinary  course  of
business by Swiss Avenue Bank which are material to the business,  operations or
financial  condition  of Swiss  Avenue  Bank as of this  date,  is set  forth on
Exhibit  5.9.  For the  purpose of  Exhibit  5.9,  materiality  shall mean those
contracts  and  commitments   (including  a  series  of  related   contracts  or
commitments)  for which  payment or other  consideration  to be furnished by any
party is more than $25,000.

5.9.2 Except as set forth on Exhibit 5.9,  Swiss Avenue Bank has in all material
respects  performed  and is performing  all  contractual  and other  obligations
required to be performed by them.

5.10 LITIGATION.  Except as set forth in Exhibit 5.10, there is not pending, or,
to the knowledge and belief of Swiss Avenue Bank threatened, any claim,

litigation,   proceeding,   order  of  any  court  or  governmental  agency,  or
governmental  investigation  or inquiry to which Swiss Avenue Bank is a party or
which involves their business operations,  any of their property or any property
leased by them which, individually or in the aggregate:

5.10.1 May  reasonably  result in any material  adverse  change in the financial
condition, business, prospects, assets, properties or operations of Swiss Avenue
Bank taken as a whole;

5.10.2 May reasonably involve the expenditure of more than a total of $10,000 in
legal fees and/or  allocated  employees'  salaries  or their  direct or indirect
costs; or,

5.10.3 Alleges violation of any law, rule or regulation.

5.11  BROKERAGE  FEES.  Swiss  Avenue Bank has not  incurred  nor will it incur,
directly  or  indirectly,  any  liability  for  brokerage,  finder's,  financial
advisor's or agent's fees or commissions by virtue of any commitment made by any
of them in connection with this Merger Agreement or any transaction contemplated
hereby except as described in Exhibit 5.11.

5.12 REQUIRED CORPORATE ACTION. The execution, delivery and consummation of this
Merger  Agreement  will at the  time of  Closing  have  been  duly  and  validly
authorized  by the board of  directors of Swiss Avenue Bank and will at the time
of Closing have been duly and validly  authorized by the  shareholders  of Swiss
Avenue Bank in accordance  with the  requirements  of the Texas Finance Code and
all other applicable law.

5.13  AUTHORIZED  EXECUTION.  This Merger  Agreement  has been duly executed and
delivered by Principal Shareholders and
by duly authorized officers of Swiss

Avenue Bank.  This Merger  Agreement  constitutes  the legal,  valid and binding
agreement  and  obligation  of  Principal  Shareholders  and Swiss  Avenue  Bank
enforceable  against them in accordance with its terms, except as may be limited
by  applicable  bankruptcy,  insolvency,  moratorium,  receivership,  and  other
similar laws affecting the rights of creditors generally.

5.14 TITLE TO ASSETS;  ENCUMBRANCES.  Swiss Avenue Bank has good and valid title
(with respect to fee real estate,  good and valid title shall mean such title as
may be insured on standard title insurance  forms with no exceptions  materially
and  adversely  affecting  the  value  or use of the fee real  estate)  to their
assets,  and in  each  case  subject  to no  mortgage,  pledge,  lien,  security
interest, conditional sale agreement, or other encumbrance of any nature whether
similar or dissimilar, except:

5.14.1 Such  encumbrances  which are purchase money security  interests  entered
into in the ordinary course of business  consistent with past practice reflected
on their books and records;

5.14.2  Lessors'  interests  in  leased  tangible  real  and  personal  property
reflected on their books and records;

5.14.3   Such encumbrances for taxes and assessments not yet due and payable;

5.14.4  Encumbrances  as do not  materially  detract from the value or interfere
with the use or operation of the asset subject thereto; and,

5.14.5  Repossessed  and  foreclosed  assets  acquired in  satisfaction  of debt
previously contracted.

5.15  EMPLOYEES.  Except as set forth on Exhibit 5.15,  none of the employees of
Swiss Avenue Bank is employed under any employment contract (oral or written) or
is the beneficiary of any compensation  plan (oral or written) or is entitled to
any payment  from Swiss  Avenue Bank by reason of this Merger  Agreement  or the
Merger and there are no employment contracts,  management contracts,  consulting
agreements,  union contracts,  labor agreements,  pension plans,  profit sharing
plans or  employee  benefit  plans to which  Swiss  Avenue Bank is a party or by
which it is bound  except as  described  on Exhibit  5.15.  All plans  which are
required to comply  with the  requirements  of the  Employee  Retirement  Income
Security  Act  are  in  full  compliance  therewith  and  with  the  regulations
promulgated pursuant thereto.

5.16 ENVIRONMENTAL LAWS. The existence, use and operation of the assets of Swiss
Avenue Bank are in material compliance with all applicable  statutes,  rules and
regulations  including,  without  limiting the generality of the foregoing,  all
environmental and zoning laws and the Americans With Disabilities Act.

5.17  SURVIVAL  AND  INDEPENDENCE  OF   REPRESENTATIONS   AND  WARRANTIES.   The
representations  and  warranties  of  Swiss  Avenue  Bank  made in  this  Merger
Agreement shall survive the Closing hereof  notwithstanding any investigation or
knowledge of BOKF;  provided  BOKF or Park Cities shall give notice to Agent (as
hereafter  defined)  of any  claim of a breach of any such  representations  and
warranties on or before March 31, 2000 (the "Claim

Notice Deadline").  Each of the  representations  and warranties of Swiss Avenue
Bank  set  forth  in  this  Merger  Agreement  is  a  separate  and  independent
representation and warranty, shall be cumulative of and in addition to all other
warranties and  representations,  and shall not limit or be interpreted to be in
derogation of any other representation or warranty made herein.

6.  REPRESENTATIONS  AND WARRANTIES OF BOKF. BOKF and Park Cities  represent and
warrant, jointly and severally, to Swiss Avenue Bank that:

6.1  INCORPORATION  AND CORPORATE  POWER.  BOKF and Park Cities are corporations
duly organized, validly existing and in good standing under the laws of Oklahoma
and Texas,  respectively.  BOKF and Park Cities have all the corporate power and
authority necessary and required to consummate the transactions  contemplated by
this Merger Agreement.

6.2 NON-VIOLATION OF OTHER AGREEMENTS. The execution and delivery of this Merger
Agreement,  and compliance with its terms and provisions by BOKF and Park Cities
and the  execution  of any  document  required  to be  executed  by BOKF or Park
Cities, will not:

6.2.1  Violate,  conflict  with or  result  in the  breach  of their  respective
certificates  of  incorporation  or bylaws or any of the  terms,  conditions  or
provisions  of any  agreement  or  instrument  to which BOKF or Park Cities is a
party, or by which BOKF or Park Cities is bound;

6.2.2    Result in the creation or imposition of any lien, charge,

encumbrance  or  restriction  of any nature  whatever  upon any of the property,
contracts or business of BOKF and Park Cities; or,

6.2.3  Require the consent of any party to a contract  with BOKF and Park Cities
in order to keep the contract enforceable.

6.3 REQUIRED CORPORATE ACTION. The execution, delivery, and consummation of this
Merger  Agreement by BOKF and Park Cities have been duly and validly  authorized
by the  boards  of  directors  of BOKF  and  Park  Cities  and  approved  by the
shareholders  of Park Cities.  The approval of the  shareholders  of BOKF is not
required.  This Merger  Agreement  has been duly  executed and delivered by duly
authorized officers of BOKF and Park Cities. This Merger Agreement constitutes a
legal,  valid and  binding  agreement  and  obligation  of BOKF and Park  Cities
enforceable against BOKF and Park Cities in accordance with its terms, except as
may be limited by applicable bankruptcy, insolvency,  moratorium,  receivership,
and other similar laws affecting the rights of creditors generally.

6.4  BROKERAGE  FEES.  Neither  BOKF nor Park Cities has incurred or will incur,
directly  or  indirectly,  any  liability  for  brokerage,  finder's,  financial
advisor's or agent's fees or  commissions  by virtue of any  commitment  made by
BOKF or Park Cities in connection with this Merger  Agreement or any transaction
contemplated  hereby.  Neither BOKF nor Park Cities has any  knowledge  that any
party has asserted any claim of such nature against BOKF or Park Cities.

6.5  SURVIVAL  AND   INDEPENDENCE  OF   REPRESENTATIONS   AND  WARRANTIES.   The
representations and warranties of BOKF and Park Cities made in this Merger

Agreement shall survive the Closing hereof  notwithstanding any investigation or
knowledge of the Principal  Shareholders;  provided the  Principal  Shareholders
shall give notice to BOKF on or before the Claim Notice Deadline of any claim of
a breach of any such representations and warranties. Each of the representations
and  warranties of BOKF and Park Cities set forth in this Merger  Agreement is a
separate and independent representation and warranty, shall be cumulative of and
in addition to all other warranties and representations; and shall not limit any
other representation or warranty made herein.

6.6 BOKF AND PARK CITIES  INDEMNIFICATION.  BOKF and Park Cities shall indemnify
the holders of Swiss Avenue Common Stock  against,  and hold them harmless from,
all  loss,  cost  and  expense  (including  interest  at the  judgment  rate and
attorney's  fees)  arising  out of any  breach  by BOKF and Park  Cities  of any
representation or warranty made in this Merger Agreement; provided, Agent shall,
on or before  the  Claim  Notice  Deadline,  give  notice of any  breach of such
representations  and  warranties  to BOKF and Park  Cities on the  request  of a
majority in interest of such shareholders.

7.  COVENANTS.

7.1 FULL ACCESS. In order that BOKF shall have the full opportunity to make such
investigations  as it shall reasonably  desire  concerning Swiss Avenue Bank and
their business affairs, Swiss Avenue Bank shall:

7.1.1  Give BOKF,  its  employees,  counsel,  accountants  and other  authorized
representatives,  as necessary to conduct the investigation,  full access,  upon
reasonable notice to Swiss

Avenue Bank and at reasonable times without unduly  interfering with the conduct
of business by Swiss Avenue Bank throughout the period up to the Closing, to all
of the  facilities,  properties,  books,  contracts  and records of Swiss Avenue
Bank.

7.1.2  Authorize its  accountants  to give BOKF full access to the  accountants'
records, including work papers; and,

7.1.3 Furnish to BOKF during that period all additional financial, operating and
other information concerning Swiss Avenue Bank and its business affairs, as BOKF
may reasonably request and which Swiss Avenue Bank shall have available.

7.1.4 All information  provided pursuant to this Section 7.1 shall be subject to
the provisions of Section 7.7.

7.2 CONDUCT OF  BUSINESS  PRIOR TO THE  CLOSING  DATE.  From this date until the
Closing  Date,  Swiss  Avenue  Bank  shall,  except as may be first  approved in
writing by BOKF or as is  otherwise  permitted  or  contemplated  in this Merger
Agreement:

7.2.1    Maintain its corporate existence in good standing;

7.2.2 Maintain the general character of its business and conduct its business in
their ordinary and usual manner consistent with past practices;

7.2.3 Maintain  proper business and accounting  records  generally in accordance
with past practices;

7.2.4    Maintain its properties (except repossessed and foreclosed

assets acquired in satisfaction of debt previously  contracted) in normal repair
and condition,  normal wear and tear and damage due to fire or other unavoidable
casualty excepted;

7.2.5 Preserve its business  organizations  intact, use their reasonable efforts
to maintain  satisfactory  relationships  with  suppliers,  customers and others
having business relations with them whose relationships it believes is desirable
to maintain, and use its reasonable efforts to procure the willingness of all of
the personnel employed by them immediately prior to the execution of this Merger
Agreement  who are  material to the  success of its  business to continue in its
employ on  substantially  the same terms and  conditions  as those on which such
personnel  were  employed  immediately  prior to the  execution  of this  Merger
Agreement;

7.2.6  Maintain in full force and effect  insurance  comparable in amount and in
scope of coverage to that now maintained by it;

7.2.7 Except as otherwise  disclosed  in this Merger  Agreement,  perform all of
their obligations under all material  contracts,  leases and agreements relating
to or affecting its assets, properties and businesses; and,

7.2.8  Comply in all  material  respects  with and perform all  obligations  and
duties imposed upon them by federal, state

and local laws, and all rules,  regulations and orders imposed by federal, state
or local  governmental  authorities,  except as may be  contested  by it in good
faith by appropriate proceedings.

7.3 SWISS AVENUE BANK  PROHIBITED  ACTIONS PRIOR TO THE CLOSING DATE.  From this
date until the Closing  Date,  Swiss  Avenue Bank shall not (except as otherwise
permitted  by this Merger  Agreement  or as  requested or approved by BOKF which
approval shall not be unreasonably withheld, delayed, or denied):

7.3.1  Incur  any  indebtedness  for  borrowed  money  or incur  any  noncurrent
indebtedness  for the purchase price of any fixed or capital asset,  or make any
extension of credit or any loans to,  guarantee the  obligations of, or make any
additional  investments  in,  any other  person,  corporation  or joint  venture
(whether an existing customer or a new customer) except:

7.3.1.1  Extensions of credit,  loans and  guarantees (i) less than Five Hundred
Thousand  Dollars  ($500,000)  per  transaction  or (ii) less  than One  Hundred
Thousand  Dollars  ($100,000)  with existing Swiss Avenue Bank customers  having
existing  credit of Five Hundred  Thousand  Dollars  ($500,000)  or more made by
Swiss Avenue Bank in the

usual and  ordinary  course  of its  banking  business,  consistent  with  prior
practices and policies;

7.3.1.2 Legal  investments by Swiss Avenue Bank in the usual and ordinary course
of its banking business consistent with prior practices and policies; and,

7.3.1.3  Borrowings  from the Federal Home Loan Bank, the Federal  Reserve Bank,
deposit liabilities,  and federal funds transactions by Swiss Avenue Bank in the
ordinary course of business consistent with past practices.

7.3.2 Make any (a) material  change,  except in the ordinary and usual course of
business,  in its  assets  (including,  but not  limited  to,  any change in the
composition of such assets so as to materially  alter the proportion of cash) or
liabilities,  (b) material  commitment for any capital  expenditures,  excluding
expenditures  for repairs and  remodeling  in the  ordinary  and usual course of
business,  or (c) sale or other  disposition of any material capital asset other
than for fair value in the ordinary course of business;

7.3.3    Make any change in its Articles of Association or Bylaws;

7.3.4  Authorize any shares of its capital stock for issuance,  issue any shares
of any previously authorized but unissued capital

stock or grant,  issue or make any option or commitment  relating to its capital
stock;

7.3.5  Enter into any letter of intent or  agreement  to sell any of its assets,
except in the normal and  ordinary  course of their  business,  or  acquire,  be
acquired  by, or merge,  consolidate  or  reorganize  with any  person,  firm or
corporation;

7.3.6 Declare or pay any dividend, make any other distribution or payment or set
aside any amount for payment with respect to any shares of their  capital  stock
or directly or indirectly,  redeem,  purchase or otherwise acquire any shares of
their capital stock or make any commitment relating thereto.

7.3.7  Except  as set  forth in  Exhibit  7.3.7,  make any (a)  increase  in the
compensation payable or to become payable to any of their directors, officers or
employees  (including,  without  limitation,  any bonus or incentive  payment or
agreement), (b) make or enter into any written employment contract or any bonus,
stock option,  profit sharing,  pension,  retirement or other similar payment or
arrangement,  or (c) make any  payment  to any  person,  except in the usual and
ordinary  course of business or except as required by an existing  agreement set
forth in the Exhibits hereto;

7.3.8 Make any material change in its banking, safe deposit or power of attorney
arrangements;

7.3.9    Enter into any trust, escrow, agency and similar trust

company agreements, purchase orders and contracts for goods and services, except
in the ordinary course of business consistent with past practices;

7.3.10 Enter into any agreement  resulting in the  imposition of any mortgage or
pledge of their assets or the creation of any lien, charge or encumbrance on any
of its assets;

7.3.11 Incur any  material  obligation  or  liability,  absolute or  contingent,
except in the  ordinary  course of business  or  pursuant to existing  contracts
described in this Merger Agreement;

7.3.12 Take any action which would prevent compliance with any of the conditions
of this Merger Agreement;

7.3.13  Increase  compensation  to any employee  except annual  increases at the
times and in amounts  consistent  with past  practices or pay any bonuses to any
employee except at the times and in amounts consistent with past practices; or,

                7.3.14   Pre-pay long term indebtedness.

7.4 VOTE FOR MERGER AND WAIVER OF RIGHT TO DISSENT.  Each Principal  Shareholder
shall vote, as a stockholder (and, if applicable, as a director) of Swiss Avenue
Bank,  for the Merger and use her or his best  efforts to cause the Merger to be
approved by the  directors and  shareholders  of Swiss Avenue Bank in accordance
with  applicable law and consummated in accordance with the terms of this Merger
Agreement.  Each Principal  Shareholder  hereby  irrevocably  waives any and all
rights to dissent to the Merger.

7.5  REGULATORY  APPROVAL.  BOKF  shall  diligently  file  and  pursue  (A)  all
regulatory  applications  required in order to consummate the Merger,  including
but not limited to the necessary applications for prior approval of the Board of
Governors of the Federal  Reserve  System,  the Office of the Comptroller of the
Currency,  and the Texas Banking  Department  on or before the thirtieth  (30th)
calendar day following the Agreement Date and (B)  thereafter  promptly file any
required supplements or amendments thereto. All applications,  supplements,  and
amendments  shall be  substantially  complete when filed.  BOKF shall deliver to
Swiss  Avenue  Bank a copy of all such  filings,  as  filed,  within  three  (3)
business days after the filing  thereof.  Although all such filings shall be the
responsibility  of BOKF, BOKF shall  nevertheless  advise and consult with Swiss
Avenue Bank on an ongoing  basis with respect to the filings and all matters and
events  related  thereto.  BOKF shall inform and make  available to Swiss Avenue
Bank from time to time all matters  relating  to the filings and the  regulatory
approvals.  BOKF shall  diligently  proceed with reasonable  deliberate speed to
obtain all such approvals. If any regulatory application required to be filed by
BOKF  should be  finally  denied or  disapproved  by the  respective  regulatory
authority, then BOKF shall immediately give notice to Swiss Avenue Bank and this
Merger  Agreement shall thereupon  terminate.  However,  it is understood that a
request  for  additional  information  or  undertaking  by the  applicant,  as a
condition for  approval,  shall not be deemed to be a denial or  disapproval  so
long as the applicant can reasonably be expected to provide

the requested information or undertaking.  In the event an application is denied
pending an appeal,  petition for review,  or similar such act on the part of the
applicant,  then the  application  will be deemed  denied  unless the  applicant
promptly  and  diligently  prepares  and files  such  appeal and  continues  the
appellate process for the purposes of getting the necessary approval.

7.6  CONFIDENTIALITY.  Prior to the  Closing,  BOKF shall  keep all  information
disclosed to BOKF (its employees,  counsel,  accountants,  and other  authorized
representatives)  by Swiss Avenue Bank  respecting  the  business and  financial
condition  of Swiss  Avenue  Bank  confidential  and  shall  make no use of such
information except to conduct the investigation  contemplated by Section 7.1 and
to  consummate  the  transactions  contemplated  hereby  and  shall not use such
information to obtain a competitive advantage in connection with any customer of
Swiss Avenue Bank.  In the event this Merger  Agreement  is  terminated  for any
reason  BOKF  shall (i)  return  all  copies of all  information  and  documents
obtained from Swiss Avenue Bank and Principal  Shareholders  and (ii) thereafter
keep all such information  confidential and not make use of any such information
to obtain a  competitive  advantage  in  connection  with any  customer of Swiss
Avenue Bank.

7.7 BOKF  PROHIBITED  ACTION PRIOR TO CLOSING.  From this date until the Closing
Date, BOKF shall not take any action which would prevent  compliance with any of
the  conditions  of this Merger  Agreement.  BOKF shall not, and shall cause its
subsidiaries not to, make or agree to make any

acquisition,  or take any other action,  that  adversely  affects its ability to
consummate  the  transactions  contemplated  by this Merger  Agreement  and will
otherwise  continue  to conduct  its  business  operations  and shall  cause the
operations of its subsidiaries to be conducted in a manner  consistent with past
operating practices.

7.8 EMPLOYMENT AGREEMENT. Principal Shareholders shall use their best efforts to
cause Carl B. Schieffer to enter into an employment  agreement with Swiss Avenue
Bank in the form and content of Exhibit 7.8 (the "Schieffer Agreement").

7.9 SWISS  AVENUE BANK  COVENANT TO OBTAIN  APPROVALS.  Swiss  Avenue Bank shall
promptly seek and use commercially  reasonable efforts to obtain the approval of
this  Merger  Agreement  and  the  transactions   contemplated   hereby  by  the
shareholders  of Swiss  Avenue  Bank.  Swiss  Avenue  Bank  shall  enter into an
agreement  to merge  with Bank of Texas,  National  Association,  subject to the
Closing of this Merger Agreement, in form and content acceptable to BOKF.

7.10 COVENANTS RESPECTING  EMPLOYMENT AND NON-COMPETITION  AGREEMENTS.  BOKF and
Swiss  Avenue  Bank  shall  use  commercially  reasonable  efforts  to cause all
employment and non-competition agreements which are a condition precedent to the
obligations  of BOKF and Park Cities under this Merger  Agreement to be executed
and delivered by the parties thereto.

7.11 EMPLOYMENT BENEFITS.  Following the Closing, BOKF shall cause all employees
of Swiss  Avenue Bank to have the same  benefits  provided by BOKF  generally to
employees  of BOKF and its  affiliates.  Employees of Swiss Avenue Bank shall be
credited  for their  actual and  credited  service  with Swiss  Avenue  Bank for
purposes of  eligibility,  vesting and beneficial  accrual for all BOKF employee
benefit plans including the BOKF 401(k) plan; provided,  however, such employees
shall not be credited with prior service in BOKF's defined benefit pension plan.
Swiss  Avenue  Bank  employees  shall  not  be  subject  to any  exclusions  for
pre-existing  conditions  under BOKF's  medical  benefit plan and shall  receive
credit for any deductibles or out-of-pocket expenses previously paid. The annual
salary  of  employees  of Swiss  Avenue  Bank as of the date of the this  Merger
Agreement  shall not be reduced  following the Closing during the period of time
commencing  at the  Closing  and ending at the opening of business on January 1,
2000.

7.12 DELIVERY OF BOKF NOTES IN LIEU OF CASH. BOKF shall, at the Closing, deliver
to any person or entity so  requesting  which  holds as of the  record  date (as
hereafter  defined) one thousand (1,000) shares of Swiss Avenue Common Stock its
negotiable promissory note in usual and customary form acceptable to counsel for
Swiss  Avenue  Bank and  BOKF  (provided  such  acceptance  is not  unreasonably
withheld,  delayed  or  denied)  bearing  interest  compounded  annually  at the
Applicable  Federal  Rate (at the date of Closing  as set forth in the  Internal
Revenue Code) evidencing all, or such portion of the Cash Consideration  payable
to  such  holder  at the  Closing  as  such  person  shall  determine,  in  such
installments and with such  maturities,  not exceeding one year from the date of
Closing, as such person or entity shall determine  (collectively,  the "Notes");
provided, however, BOKF shall not issue a Note

to any holder who does not (i) advise  BOKF in writing on or prior to the record
date of the principal amount, installments,  and maturities such holder desires,
(ii) all Notes shall be non-transferrable by the holders thereof except by gift,
devise,  or  operation of law; and (iii) BOKF shall not issue any Note unless it
shall have  received  an opinion of its counsel  that the  issuance of such Note
does not require  registration  under the Securities Act of 1933, the securities
law of all applicable jurisdictions, and the Trust Indenture Act of 1940.

7.13 EMPLOYMENT OF SENIOR OFFICERS. BOKF shall, upon consummation of the Merger,
cause  Bank of Texas,  National  Association  to enter  into  letter  agreements
respecting  employment,  in the form of Exhibit 7.13, with the following  senior
officers of Swiss Avenue  Bank:  Harlan  Bilton,  Danell  Lichtenwalter,  Reggie
George, Sue Dorsey, Danny Oberst, and Shelby Martin.

8.  CONDITIONS  PRECEDENT TO CLOSING BY BOKF AND PARK CITIES.  The obligation of
BOKF, Park Cities and PC to consummate and close this transaction is conditioned
upon each and all of the following:

8.1 The representations,  warranties and covenants of Swiss Avenue Bank shall be
materially  true at the Closing as though such  representations,  warranties and
covenants were also made at the Closing.

8.2 The Federal Reserve Board shall have approved the Merger, or issued a waiver
of approval,  in accordance  with 12 U.S.C.  Section 1842 and 12 C.F.R.  Section
225. The Texas Banking  Department  shall have approved the Merger in accordance
with Section 31.301 of the Texas Finance Code. The Office of the  Comptroller of
the Currency shall have approved the

Merger  and the  merger  of Swiss  Avenue  Bank  into  Bank of  Texas,  National
Association in accordance with 12 U.S.C.  Section 215a and 12 C.F.R.  5.33. Such
other regulatory approvals as may be required shall have been obtained.

8.3 Swiss  Avenue  Bank and  Principal  Shareholders  shall have  performed  and
complied with, in all material  respects,  all of their  obligations  under this
Merger  Agreement which are to be performed or complied with by them prior to or
on the Closing Date.

8.4 Swiss  Avenue Bank shall have  delivered  to BOKF an opinion of its counsel,
dated the Closing Date, in the form and content of the opinion  attached  hereto
as Exhibit 8.4.

8.5 The  shareholders  of Swiss  Avenue  Bank shall have  approved  this  Merger
Agreement  in  accordance  with the Texas  Finance  Code and the Texas  Business
Corporation Act. Swiss Avenue Bank shall have entered into an agreement to merge
with Bank of Texas, National Association,  subject to the Closing of this Merger
Agreement,  in form and content acceptable to BOKF. 8.6 The Schieffer  Agreement
shall have been  executed  and  delivered.  Each  officer and  director of Swiss
Avenue Bank,  which BOKF deems  critical in BOKF's good faith  judgment,  shall,
prior to or at the Closing, have entered into a non-competition agreement in the
form of Exhibit 8.6.

8.7 Swiss  Avenue Bank taken as a whole  shall not have  suffered  any  material
adverse change in their financial conditions, assets, liabilities, businesses or
properties.

8.8 Holders of no more than five percent  (5%) of the Swiss Avenue  Common Stock
shall have dissented to the Merger.

In the event any one or more of these  conditions  shall not have been fulfilled
prior to or at the Closing,  BOKF, Park Cities, and PC may terminate this Merger
Agreement by written  notice to Swiss Avenue Bank,  in which event neither party
shall  have  any  further  obligation  or  liability  to the  other  except  the
obligations of BOKF set forth in Section 7.6 and the obligations of Swiss Avenue
Bank set forth in Section 5.11.  BOKF, Park Cities,  and PC shall be entitled to
waive  compliance  with  any  one or more  of the  conditions,  representations,
warranties or covenants in whole or in part.

9. CONDITIONS PRECEDENT TO CLOSING BY SWISS AVENUE BANK. The obligation of Swiss
Avenue Bank to consummate and close this  transaction are conditioned  upon each
and all of the following:

9.1 The  representations,  warranties and covenants of BOKF and Park Cities made
in  this  Merger  Agreement  shall  be  true  at  the  Closing  as  though  such
representations, warranties and covenants were also made at the Closing.

9.2 BOKF and Park Cities  shall have  performed  and  complied,  in all material
respects, with all of their obligations under this Merger Agreement which are to
be performed or complied with by them prior to or at the Closing.

9.3 BOKF shall have  delivered  to Swiss  Avenue Bank an opinion of its counsel,
Frederic  Dorwart,  Tulsa,  Oklahoma,  dated the Closing  Date,  in the form and
content of the opinion attached hereto as Exhibit 9.3.

9.4 The Federal Reserve Board shall have approved the Merger, or issued a waiver
of approval,  in accordance  with 12 U.S.C.  Section 1842 and 12 C.F.R.  Section
225. The Texas Banking Department shall have approved the

Merger in accordance  with Section  31.301 of the Texas Finance Code. The Office
of the Comptroller of the Currency shall have approved the Merger and the merger
of Swiss Avenue Bank into Bank of Texas, National Association in accordance with
12 U.S.C.  Section 215a and 12 C.F.R.  5.33. Such other regulatory  approvals as
may be required shall have been obtained.

9.5 The  shareholders  of Swiss  Avenue  Bank shall have  approved  this  Merger
Agreement  and the  transactions  contemplated  hereby as  required by the Texas
Finance Code and the Texas Business Corporation Act.

Swiss Avenue Bank shall be entitled to waive  compliance with any one or more of
the conditions, representations, warranties or covenants in whole or in part. In
the event  any one or more of these  conditions  shall  not have been  fulfilled
prior  to or at the  Closing,  Swiss  Avenue  Bank  may  terminate  this  Merger
Agreement  by notice to BOKF,  in which  event no party  shall have any  further
obligation or liability to the other,  except the  obligations of BOKF set forth
in Section 7.6.

10.  CLOSING.  The Closing  ("Closing"  or "Closing  Date") of the  transactions
contemplated  by this Merger  Agreement  shall take place five (5) business days
following  the  first  day on  which  (i)  BOKF and  Park  Cities  can  lawfully
consummate  the Merger under 12 U.S.C.  Section 1842, 12 C.F.R.  Section 225 and
other applicable  laws,  rules and regulations and (ii) Bank of Texas,  National
Association and Swiss Avenue Bank can merge under 12 U.S.C. Section 215a, and 12
C.F.R.  Section 5.23 and other applicable  laws,  rules and regulations.  In any
event, if the Closing Date does not occur on or before July 1, 1999, then either
BOKF or Swiss  Avenue  Bank may by notice to the other,  terminate  this  Merger
Agreement,  provided  such  notice is given on or before  August  1,  1999.  The
Closing  shall be held at 10:00 a.m. on the Closing Date at the offices of Swiss
Avenue Bank or at such other time and place as BOKF and Swiss  Avenue may agree.
At the Closing,  BOKF,  Park  Cities,  PC,  Swiss  Avenue  Bank,  and  Principal
Shareholders  shall  execute and deliver all of the documents and take all other
actions which are contemplated by the terms hereof.

10.1 Without limiting the generality of Section 10 of this Merger Agreement, the
following actions shall be taken at the Closing concurrently.  Swiss Avenue Bank
shall:

10.1.1 Use  commercially  reasonable  efforts to cause to be  delivered  to Park
Cities certificates representing the Swiss Avenue Common Stock;

10.1.2  Deliver the opinion of Swiss Avenue Bank's  counsel  pursuant to Section
8.4; and,

10.1.3 Except as otherwise  set forth on Exhibit  10.1.3,  cause the  employment
agreements,  plans and payments  described in Exhibit 5.15 to be terminated  and
discharged at no cost to Swiss Avenue Bank.

10.2 Without limiting the generality of Section 10 of this Merger Agreement, the
following actions shall be taken at the Closing concurrently. BOKF, Park Cities,
or PC shall:

10.2.1 Pay, by corporate  check,  to each of the holders of Swiss Avenue  Common
Stock of record on the third  business  day  preceding  the Closing (the "Record
Date") the amounts to which such holders are entitled pursuant to Section 3.7 or
deliver Notes in lieu thereof as provided in Section 7.12.

10.2.2   Establish the Escrow.

10.2.3 Deliver the opinion of BOKF's counsel pursuant to Section 9.3.

10.2.4 Cause appropriate  evidences of the Merger to be filed in accordance with
applicable law.

11. THE ESCROW.  The Escrow  shall be  established  on the  following  terms and
conditions:

11.1 The escrow agent shall be Bank of Texas Trust Company, National Association
("Escrow Agent").

11.2 The Escrow  shall be  governed  by the  standard  form of escrow  agreement
generally in use by the Escrow Agent (the "Escrow Agreement").

11.3 BOKF shall  deliver the Escrow  Amount to the Escrow  Agent at the Closing.
The Escrow Agent shall invest the Escrow Amount in three month  certificates  of
deposit issued by Bank of Texas,  National  Association ("BOT") on the terms and
conditions being offered by BOT to the public at the time of such investment and
shall  thereafter  renew such  certificates  of deposit upon  maturity as to the
total amount  remaining in the Escrow  after  payment of any Allowed  Claim (for
like periods and on the terms and conditions  being offered by BOT to the public
at the time of such renewal). Interest on the certificates shall be added to the
Escrow and deemed part of the Escrow Amount.

11.4 In the event BOKF claims a breach of the  representations and warranties of
Swiss Avenue Bank arising under this Merger Agreement, BOKF shall give notice of
the claim (a  "Claim") to the Agent (as  hereafter  defined).  The notice  shall
identify the representations and warranties which BOKF claims have been breached
and describe in reasonable detail the basis of the Claim.

11.5 In the event BOKF makes a Claim(s) prior to the Claim Notice Deadline,  the
Escrow Agent shall continue to hold the Escrow Amount until such Claim(s)

is  resolved  by (i) the  mutual  agreement  of  Agent  and BOKF or (ii) a final
adjudication  determining  the merits of the Claim(s),  at which time the Escrow
shall terminate and the Escrow Agent shall pay (a "Claim  Payment") the Claim as
mutually agreed or finally adjudicated (an "Allowed Claim").

11.6 The Escrow shall terminate at the later of the Claim Notice Deadline or the
date on which all timely noticed  Claims have been resolved by mutual  agreement
or final adjudication and all Allowed Claims, if any, shall have been paid.

11.7 Upon  termination  of the Escrow the Escrow Amount  remaining in the Escrow
shall be  delivered  to the holders of Swiss  Avenue  Common Stock on the Record
Date in accordance with their respective interests.

11.8 The rights of the holders of Swiss Avenue Common Stock to receive  payments
from the Escrow shall not be assignable or  transferable  except by operation of
law or by intestacy or with the  approval of BOKF (which  approval  shall not be
unreasonably  withheld,  delayed,  or denied) and will not be  evidenced  by any
certificate or other evidence of ownership.

11.9 BOKF shall pay the fees and costs of the Escrow  Agent with  respect to the
Escrow.

11.10 The Agent shall be Sam Davis. The Executive Committee of Swiss Avenue Bank
on the  Record  Date may by  majority  vote and upon  notice to BOKF  change the
Agent.  The  Agent  shall  have  authority  to  act  for  and on  behalf  of the
stockholders of Swiss Avenue Bank in resolving,  whether  through  settlement or
litigation,  any Claim.  The Agent shall be reimbursed for his reasonable  costs
and expenses,  including  attorneys' fees, by the Escrow Agent out of the Escrow
Fund. The Agent

shall not be deemed a fiduciary of the holders of Swiss Avenue  Common Stock and
shall be  liable  to such  holders  only for  gross  negligence  or  intentional
wrongdoing.

12. MISCELLANEOUS PROVISIONS. The following miscellaneous provisions shall apply
to this Agreement:

12.1 All notices or advices  required or permitted to be given by or pursuant to
this Agreement, shall be given in writing. All such notices and advices shall be
(i)  delivered  personally,  (ii)  delivered  by  facsimile or delivered by U.S.
Registered or Certified Mail,  Return Receipt Requested mail, or (iii) delivered
for overnight  delivery by a nationally  recognized  overnight  courier service.
Such  notices  and  advices  shall be deemed  to have  been  given (i) the first
business  day  following  the date of delivery  if  delivered  personally  or by
facsimile,  (ii) on the third  business  day  following  the date of  mailing if
mailed by U.S. Registered or Certified Mail, Return Receipt Requested,  or (iii)
on the date of receipt if  delivered  for  overnight  delivery  by a  nationally
recognized overnight courier service. All such notices and advices and all other
communications related to this Agreement shall be given as follows:

BOKF and Park Cities:

James A. White, Executive Vice President BOK FINANCIAL CORPORATION P.O. Box 2300
Tulsa, OK 74192 (918) 588-6853 - Facsimile

C. Fred Ball, Jr. 7600 West Northwest Highway Dallas, Texas 75225 Attention:  C.
Fred Ball, Jr. Telephone No: (214) 706-0336 Telecopy No.: (214) 706-0350

and Frederic Dorwart, Secretary and General Counsel to BOK Financial Corporation
Old City Hall 124 East Fourth Street Tulsa, OK 74103 (918) 583-8251 - Facsimile

Swiss Avenue Bank and Principal Shareholders:

Carl  B.  Schieffer   President  Swiss  Avenue  State  Bank  4217  Swiss  Avenue
214-824-4760 - Telephone 214-823-3918 - Facsimile

and Robert S.  Addison  Payne & Blanchard,  L.L.P.  700 North Pearl Street Suite
500, LB 393 Dallas,  TX  75201-7424  214-871-4336  -  Telephone  214-220-0439  -
Facsimile

or to such other address as the party may have furnished to the other parties in
accordance  herewith,  except  that  notice  of  change  of  addresses  shall be
effective only upon receipt.

12.2 This  Agreement  shall be subject to, and  interpreted by and in accordance
with, the laws (excluding conflict of law provisions) of the State of Texas.

12.3 This  Agreement  is the entire  Agreement  of the  parties  respecting  the
subject  matter  hereof.  There  are no  other  agreements,  representations  or
warranties, whether oral or written, respecting the subject matter hereof.

12.4 No course of prior  dealings  involving  any of the  parties  hereto and no
usage of trade shall be relevant or advisable to interpret,  supplement, explain
or vary any of the terms of this Agreement, except as expressly provided herein.

12.5 This Agreement,  and all the provisions of this Agreement,  shall be deemed
drafted  by all  of  the  parties  hereto.  12.6  This  Agreement  shall  not be
interpreted strictly for or against any party, but solely in accordance with the
fair meaning of the provisions hereof to effectuate the purposes and interest of
this  Agreement.  12.7 Each party hereto has entered into this  Agreement  based
solely upon the agreements,  representations and warranties  expressly set forth
herein and upon his own  knowledge and  investigation.  Neither party has relied
upon any  representation  or warranty of any other party hereto  except any such
representations or warranties as are expressly set forth herein.

12.8 Each of the persons  signing  below on behalf of a party hereto  represents
and warrants  that he or she has full  requisite  power and authority to execute
and  deliver  this  Agreement  on  behalf of the  parties  for whom he or she is
signing and to bind such party to the terms and conditions of this Agreement.

12.9 This  Agreement  may be  executed in  counterparts,  each of which shall be
deemed an original.  This Agreement shall become  effective only when all of the
parties  hereto shall have  executed the original or  counterpart  hereof.  This
agreement  may be  executed  and  delivered  by a  facsimile  transmission  of a
counterpart signature page hereof.

12.10 In any action brought by a party hereto to enforce the  obligations of any
other party hereto,  the prevailing  party shall be entitled to collect from the
opposing  party to such  action such  party's  reasonable  litigation  costs and
attorneys  fees  and  expenses  (including  court  costs,   reasonable  fees  of
accountants and experts, and other expenses incidental to the litigation).

12.11 This Agreement shall be binding upon and shall inure to the benefit of the
parties and their respective successors and assigns.

12.12  This  is not a third  party  beneficiary  contract  except  as  otherwise
expressly  stated  herein.  No person or entity other than a party  signing this
Agreement  shall  have any  rights  under  this  Agreement  except as  otherwise
expressly stated herein.

12.13  This  Agreement  may be  amended  or  modified  only in a  writing  which
specifically references this Agreement.

12.14     This Agreement may not be assigned by any party hereto.

12.15 A party to this  Agreement  may decide or fail to  require  full or timely
performance  of any  obligation  arising under this  Agreement.  The decision or
failure  of a  party  hereto  to  require  full  or  timely  performance  of any
obligation  arising  under this  Agreement  (whether on a single  occasion or on
multiple occasions) shall not be deemed a waiver of any such obligation. No such
decisions or failures shall give rise to any claim of estoppel,  laches,  course
of dealing,  amendment of this Agreement by course of dealing,  or other defense
of any nature to any obligation arising hereunder.

12.16 The  repudiation,  breach,  or failure to perform any  obligation  arising
under this Agreement by a party after reasonable  notice thereof shall be deemed
a repudiation,  breach,  and failure to perform all of such party's  obligations
arising under this Agreement.

12.17 Time is of the essence with respect to each obligation  arising under this
Agreement.  The failure to timely perform an obligation  arising hereunder shall
be deemed a failure to perform the obligation.

12.18 All actions taken and  documents  delivered at the Closing shall be deemed
to have been taken and  executed  simultaneously  and no action  shall be deemed
taken nor any document delivered until all have been taken and delivered.

Dated and effective the date first set forth above.

SWISS AVENUE STATE BANK

By   /s/ NOBLE HURLEY
     ---------------------------------------

SHAREHOLDERS OF SWISS AVENUE BANK (As Set Forth On Exhibit 1.3)

By 
     ---------------------------------------

BOK FINANCIAL CORPORATION

By   /s/ JAMES F. ULRICH 
     ---------------------------------------

PARK CITIES BANCSHARES, INC., a Texas Corporation

By   /s/ C.F. BALL, JR. 
     ---------------------------------------

PC INTERIM STATE BANK (Dated ______________, _____, 1999)

By ---------------------------------------

                               EXHIBIT 1.3
                                   TO
                            MERGER AGREEMENT

                         Principal Shareholders

              NAME                                     # OF SHARES


          Willis I. Cottel, M.D.



          David H. Hitt   /s/ DAVID H. HITT                 5,933


          Hitt Family Trust   /s/ DAVID H. HITT             5,934


          Noble Hurley   /s/ NOBLE HURLEY                     853


          Sanford Family Trust   /s/ H. SANFORD



          Smith Marital Trust   /s/ GLORIA SMITH            30,004


          Baptist Foundation of Texas   /s/ LYNN CRAFT      84,021


          Carl B. Schieffer   /s/ CARL B. SCHIEFFER          1,920


EXHIBIT 5.3
TO
MERGER AGREEMENT

                              Subsidiaries

                                  None

                              EXHIBIT 5.6.3
                                   TO
                            MERGER AGREEMENT

                          Material Liabilities

                                  None

                               EXHIBIT 5.7
                                   TO
                            MERGER AGREEMENT

             Conduct of Business Prior to Closing Exceptions

                                  None

                               EXHIBIT 5.9
                                   TO
                            MERGER AGREEMENT

                        Contracts and Commitments

None; except as listed below:

                              EXHIBIT 5.10
                                   TO
                            MERGER AGREEMENT

                               Litigation

                                  None

                              EXHIBIT 5.11
                                   TO
                            MERGER AGREEMENT

                         Brokers and Commissions

                                  None

                              EXHIBIT 5.15
                                   TO
                            MERGER AGREEMENT

                  Employee Contracts and Benefit Plans

                                  None

Swiss  Avenue  State Bank Profit  Sharing Plan which  includes  Employee  Thrift
Contribution. It is a 401 A with a balance of $1,290,343.22.

                              EXHIBIT 7.3.7
                                   TO
                            MERGER AGREEMENT

                         Compensation Exceptions

                                  None

                               EXHIBIT 7.8
                                   TO
                            MERGER AGREEMENT

                           Schieffer Agreement

                              EXHIBIT 7.13
                                   TO
                            MERGER AGREEMENT

                 Letter Agreements With Senior Officers

                       ________________, ____ 1999

             Bank of Texas, National Association Letterhead

Dear  _________________:

As you know Swiss  Avenue  State  Bank will soon  become a member of the Bank of
Texas  group of banks.  For an  interim  period  of time  Swiss  Avenue  will be
operated as a separate  bank.  In due course,  Swiss  Avenue will be merged into
Bank of Texas.

I  want  to  welcome  you,  as a  key  member  of  Swiss  Avenue  Bank,  to  our
organization. We are confident you will enjoy and prosper as part of the Bank of
Texas team.

Officers  within  the Bank of Texas  group  of  banks  generally  serve at will;
however, because of the transition,  we think it advisable that we each agree to
a one year employment  agreement.  Bank of Texas will cause your employment with
Swiss Avenue Bank to be continued  for this one year period;  after the one year
period,  your  employment  will  continue  with  Swiss  Avenue (or Bank of Texas
following the merger) on the usual basis.

Your annual salary will remain the same. Salary reviews, incentive compensation,
and other benefits will be transitioned  from Swiss Avenue Bank to those of Bank
of Texas.  In exchange for our one year  commitment,  we ask you to commit to us
for the  same  one  year  period.  If you are  willing  to make  this  one  year
commitment  with us,  please  indicate  your  acceptance  of this  commitment by
signing and returning a copy of this letter to us.

Again, welcome to Bank of Texas. I look forward to a good and long relationship.
Please let me know if you have any questions.

                               EXHIBIT 8.4
                                   TO
                            MERGER AGREEMENT

                   Swiss Avenue Bank Counsel's Opinion

       [To be prepared by mutual agreement of counsel to BOKF and
                     counsel to Swiss Avenue Bank.]

                               EXHIBIT 8.6
                                   TO
                            MERGER AGREEMENT

                        AGREEMENT NOT TO COMPETE

This   Agreement  Not  to  Compete   ("Agreement")   is  made  effective  as  of
_____________, 199___ (the "Effective Date") between:

(i) _____________________ ("Principal"); and,

                (ii) BOK Financial Corporation ("BOKF").

In consideration of the mutual covenants contained herein, the adequacy of which
is hereby  expressly  acknowledged,  and  intending to be legally  bound hereby,
Principal and BOKF agree as follows:

(1)  PURPOSE OF THIS  AGREEMENT  NOT TO COMPETE.  Principal  is a key officer or
director and  shareholder  of Swiss Avenue Bank.  BOKF and the  shareholders  of
Swiss  Avenue Bank are  contemporaneously  herewith  entering  into that certain
Merger Agreement dated effective as of  ______________,  1998 to which reference
is hereby made (the "Merger  Agreement").  The Merger Agreement  constitutes the
sale of the  goodwill of the  business of Swiss  Avenue Bank to BOKF.  Principal
acknowledges  that  competition by Principal with BOKF would damage the goodwill
being sold by Principal. The purpose of this agreement is to set forth the terms
and conditions on which  Principal  agrees not to compete with BOKF. The defined
terms  set  forth  herein  shall  have the  meanings  set  forth  in the  Merger
Agreement.

(2)  Principal  hereby  agrees  that,  from and after the  Closing  for one year
following the closing, Principal shall not directly or indirectly (whether as an
officer,  director,  employee,  partner,  stockholder,   creditor  or  agent  or
representative  of other persons or entities or in any other  manner)  engage in
the banking business in the Dallas-Ft.  Worth Metropolitan Area or in any county
contiguous  thereto or in such other area where Swiss Avenue Bank has heretofore
regularly conducted business or maintained an office.

(3) Paragraph 2 hereof shall not apply to any investment by the Principal in any
widely-held  class of  securities  of any  banking  business,  which  investment
comprises less than 5% of the total number of shares of that class of securities
outstanding.

(4) Principal agrees that:

(a) This  Agreement is entered into in connection  with the sale of the goodwill
of Swiss Avenue Bank.

(b) The restrictions  imposed by this Agreement  (particularly  the geographical
and time  restrictions)  are fair,  reasonable  and  necessary  to  protect  the
goodwill of Swiss Avenue Bank which is being sold to BOKF.

(c) Any remedy at law for any breach of this Agreement  would be inadequate and,
in the  event of any such  breach,  BOKF  shall be  entitled  to  immediate  and
permanent  injunctive  relief to preclude  any such  breach (in  addition to any
remedies  at law to  which  BOKF  may be  entitled)  without  any  necessity  of
establishing irreparable injury or posting bond or security therefore.

(d) Without  limiting the generality of the  obligations  imposed by Paragraph 2
hereof,  Principal  agrees  that the  Principal  shall not  solicit  persons  or
entities who are customers or clients of Swiss Avenue Bank at the date hereof or
solicit  employees  of Swiss Avenue Bank to seek  employment  with any person or
entity  except  BOKF  and  its  subsidiaries,  whether,  in  either  case,  such
solicitation is made within or without the area described in Paragraph 2 hereof.

(e) Principal represents that Principal is entering into this Agreement in order
to  induce  BOKF  to  enter  into  and  consummate  the  Merger   Agreement  and
acknowledges that the consideration  received in the Merger is full and adequate
consideration for the promises of Principal made herein.

(5) MISCELLANEOUS.  The following  miscellaneous  provisions shall apply to this
Agreement:

(a) This  Agreement  shall be subject to, and  interpreted  by and in accordance
with, the laws of the State of Texas  (excluding the conflicts of law provisions
thereof).

(b) This Agreement is the entire agreement of the parties respecting the subject
matter  hereof.  There  are  no  other  agreements,  whether  oral  or  written,
respecting the subject matter hereof.

(c) This  Agreement  may be  executed  in  counterparts,  each of which shall be
deemed an original.  This Agreement shall become  effective only when all of the
parties hereto shall have executed the original or a counterpart hereof. This

Agreement may be delivered by facsimile  transmission of an executed original or
counterpart hereof.

(d) In any action  brought by a party hereto to enforce the  obligations  of any
other party hereto,  the prevailing  party shall be entitled to collect from the
opposing parties to such action such party's reasonable attorneys fees and costs
(including  court costs,  reasonable fees of accountants and experts,  and other
expenses incidental to the action).

(e) This is not a third party  beneficiary  contract.  No person or entity other
than an express party hereto shall have any rights hereunder.

(f) This  Agreement  shall be  binding  upon the  parties  and their  respective
successors  and assigns.  The rights of the parties under this Agreement may not
be assigned without the prior written consent of the parties hereto.

By -----------------------------------

BOK FINANCIAL CORPORATION

By -----------------------------------

                               EXHIBIT 9.3
                                   TO
                            MERGER AGREEMENT

                         BOKF Counsel's Opinion

[To be  prepared  by mutual  agreement  of counsel to BOKF and  counsel to Swiss
Avenue Bank.]

                             EXHIBIT 10.1.3
                                   TO
                            MERGER AGREEMENT

                     EMPLOYMENT AGREEMENT EXCEPTIONS

                                  None


<TABLE> <S> <C>


<ARTICLE>                                            9
<LEGEND>
This  schedule  contains  summary  financial   information  extracted  from  BOK
Financial  Corporation's  10-Q  for the  period  ended  March  31,  1999  and is
qualified in its entirety by reference to such financial statements.
</LEGEND>                                               
<MULTIPLIER>                                  1,000
       
<S>                             <C>
<PERIOD-TYPE>                   3-mos
<FISCAL-YEAR-END>                              Dec-31-1999
<PERIOD-END>                                   MAR-31-1999
<CASH>                                         405,396
<INT-BEARING-DEPOSITS>                               0
<FED-FUNDS-SOLD>                               8,031
<TRADING-ASSETS>                               51,924
<INVESTMENTS-HELD-FOR-SALE>                    2,375,630
<INVESTMENTS-CARRYING>                         230,190
<INVESTMENTS-MARKET>                           229,719
<LOANS>                                        3,591,398
<ALLOWANCE>                                    67,959
<TOTAL-ASSETS>                                 7,044,000
<DEPOSITS>                                     4,342,835
<SHORT-TERM>                                   1,944,010
<LIABILITIES-OTHER>                            88,580
<LONG-TERM>                                    149,268
                          0
                                    25
<COMMON>                                       3
<OTHER-SE>                                     519,179
<TOTAL-LIABILITIES-AND-EQUITY>                 7,044,000
<INTEREST-LOAN>                                70,500
<INTEREST-INVEST>                              35,134
<INTEREST-OTHER>                               874
<INTEREST-TOTAL>                               106,508
<INTEREST-DEPOSIT>                             32,500
<INTEREST-EXPENSE>                             56,610
<INTEREST-INCOME-NET>                          49,898
<LOAN-LOSSES>                                  3,370
<SECURITIES-GAINS>                             274
<EXPENSE-OTHER>                                63,593
<INCOME-PRETAX>                                29,800
<INCOME-PRE-EXTRAORDINARY>                     19,817
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                                   19,817
<EPS-PRIMARY>                                  .43
<EPS-DILUTED>                                  .38
<YIELD-ACTUAL>                                 3.57
<LOANS-NON>                                    15,007
<LOANS-PAST>                                   12,917
<LOANS-TROUBLED>                               0
<LOANS-PROBLEM>                                71,224
<ALLOWANCE-OPEN>                               64,931
<CHARGE-OFFS>                                  1,200
<RECOVERIES>                                   858
<ALLOWANCE-CLOSE>                              67,959
<ALLOWANCE-DOMESTIC>                           67,959
<ALLOWANCE-FOREIGN>                            0
<ALLOWANCE-UNALLOCATED>                        0
        


</TABLE>


© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission