NORTHERN TRUST CORP
S-4/A, 1994-03-15
STATE COMMERCIAL BANKS
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<PAGE>
 
    
    As filed with the Securities and Exchange Commission on March 15, 1994

                                                   REGISTRATION NO. 33-52219    
================================================================================
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                         -----------------------------

    
                                PRE-EFFECTIVE 
                                AMENDMENT NO 1 
                                      TO     
                                   FORM S-4
                            REGISTRATION STATEMENT
                       Under the Securities Act of 1933
                         -----------------------------
                          NORTHERN TRUST CORPORATION
            (Exact name of registrant as specified in its charter)

    
   DELAWARE                        6712                          36-2723087
 (State or other            (Primary Standard                (I.R.S. Employer
  jurisdiction                 Industrial                   Identification No.)
of incorporation              Classification 
or organization)                Code Number)                          
                                     
                                    
                          FIFTY SOUTH LASALLE STREET
                            CHICAGO, ILLINOIS 60675
                                 (312) 630-6000
         (Address, including zip code, and telephone number, including
            area code, of registrant's principal executive offices)
                         ----------------------------

                              PETER L. ROSSITER,
                           EXECUTIVE VICE PRESIDENT,
                         GENERAL COUNSEL AND SECRETARY
                          NORTHERN TRUST CORPORATION 
                          FIFTY SOUTH LASALLE STREET
                            CHICAGO, ILLINOIS 60675
                                (312) 630-6000
      (Name, address, including zip code, and telephone number,including 
                       area code, of agent for service)

                                WITH COPIES TO:

      GARY L. MOWDER                                ALEXANDER W. PATTERSON
  SCHIFF HARDIN & WAITE                                 ALSTON & BIRD
    7200 SEARS TOWER                                 ONE ATLANTIC CENTER
 CHICAGO, ILLINOIS 60606                          1201 WEST PEACHTREE STREET
      (312) 258-5514                             ATLANTA, GEORGIA 30309-3424

                      ----------------------------------

  Approximate date of commencement of proposed sale to the public:  As soon
as practicable after the effective date of this Registration Statement.

 If the securities being registered on this Form are being offered in connection
with the formation of a holding company and there is compliance with General
Instruction G, check the following box.  [__]


    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.
===============================================================================

  
<PAGE>
 
                           NORTHERN TRUST CORPORATION
                             CROSS REFERENCE SHEET

     Pursuant to Item 501 of Regulation S-K showing the location in the Proxy
Statement-Prospectus of the responses to the Items of Part I of Form S-4.
<TABLE>
<CAPTION>
 
 
            REGISTRATION STATEMENT                             PROXY STATEMENT-
               ITEM AND CAPTION                               PROSPECTUS CAPTION
            ----------------------                            ------------------
<S>                                              <C>
1.  Forepart of Registration Statement
     and Outside Front Cover Page of
     Prospectus...............................    Facing Page of Registration Statement;
                                                  Outside Front Cover Page of Proxy
                                                  Statement-Prospectus
2.  Inside Front and Outside Back Cover
     Pages of Prospectus......................    Available Information; Incorporation of
                                                  Certain Information by Reference; Table of
                                                  Contents
3.  Risk Factors, Ratio of Earnings to
     Fixed Charges and Other
     Information..............................    Summary
4.  Terms of the Transaction..................    Summary; The Merger
5.  Pro Forma Financial Information...........    *
6.  Material Contacts with the Company
     Being Acquired...........................    *
7.  Additional Information Required for
     Reoffering by Persons and Parties
     Deemed to Be Underwriters................    *
8.  Interests of Named Experts and
     Counsel..................................    Legal Opinion
9.  Disclosure of Commission Position on
     Indemnification for Securities Act
     Liabilities..............................    *
10. Information With Respect to S-3
     Registrants..............................    Incorporation of Certain Information by
                                                  Reference; Summary
11. Incorporation of Certain Information
     by Reference.............................    Incorporation of Certain Information by
                                                  Reference
12. Information With Respect to S-2 or
     S-3 Registrants..........................    *
13. Incorporation of Certain Information
     by Reference.............................    *
</TABLE> 

<PAGE>
 
<TABLE> 
<S>                                               <C> 
14. Information With Respect to
     Registrants Other than S-2 or S-3
     Registrants..............................    *
 
 
15. Information With Respect to S-3
     Companies................................    *
 
16. Information With Respect to S-2 or
     S-3 Companies............................    *
 
17. Information With Respect to
     Companies Other than S-2 or S-3
     Companies................................    Summary; Business of Hazlehurst; Index to
                                                  Financial Statements of Hazlehurst
 
18. Information if Proxies, Consents or
     Authorizations Are To Be Solicited.......    Summary; The Special Meeting; The
                                                  Merger--Interests of Certain Persons in the
                                                  Merger; --Employee Benefits; Appraisal
                                                  Rights of Holders of Hazlehurst Common
                                                  Stock
19. Information if Proxies, Consents or
     Authorizations Are Not To Be
     Solicited or in an Exchange Offer........    *
- -------------------------
</TABLE>
   
*Item is omitted because answer is negative or item is inapplicable.

<PAGE>
 
                          NOTICE OF SPECIAL MEETING OF
               THE STOCKHOLDERS OF HAZLEHURST & ASSOCIATES, INC.

    
                           TO BE HELD APRIL 14, 1994     

To the Stockholders of Hazlehurst & Associates, Inc.:

    
     Notice is hereby given that a Special Meeting of Stockholders of Hazlehurst
& Associates, Inc. ("Hazlehurst") will be held at 400 Perimeter Center Terrace,
Suite 850, Atlanta, Georgia 30346 on Thursday, April 14, 1994, at 10:00 a.m.
local time, for the following purposes:     

    
     1.      To consider and vote upon a proposal to approve an Agreement and
Plan of Reorganization by and among Northern Trust Corporation ("NTC"),
Hazlehurst Merger Corporation, a wholly-owned subsidiary of NTC ("Acquisition"),
and Hazlehurst & Associates, Inc. ("Hazlehurst"), and certain stockholders of
Hazlehurst (the "Principal Stockholders"), and the related Agreement and Plan of
Merger (collectively, the "Merger Agreement"), pursuant to which Acquisition
will be merged with and into Hazlehurst (the "Merger") and Hazlehurst will
become a wholly-owned subsidiary of NTC.  Pursuant to the Merger, each issued
and outstanding share of common stock of Hazlehurst ("Hazlehurst Common Stock")
will be converted into (i) the right to receive that number of whole shares of
common stock of NTC, par value $1.66 2/3 per share (the "NTC Common Stock")
equal to the quotient obtained by dividing the total number of shares of NTC
Common Stock issuable in the Merger, determined in accordance with the
immediately succeeding sentence, by the total number of shares of Hazlehurst
Common Stock outstanding as of the effective time of the Merger.  The number of
shares of NTC Common Stock to be issued in the Merger will be that number of
whole shares of common stock of NTC as shall have a market value equal to
$22,500,000 determined on the basis of the unweighted average of the last-sale
price of the NTC Common Stock, as reported by the National Association of
Securities Dealers Automated Quotation -- National Market System for the fifteen
trading days ending on the third trading day preceding the date on which the
Certificate of Merger of Hazlehurst and Acquisition is filed with the Secretary
of State of Delaware, but not more than 681,818 nor fewer than 468,750 (unless
Hazlehurst shall so elect under the Merger Agreement) shares; and (ii) cash
(without interest) in lieu of any fractional shares, all as more fully described
in the accompanying Proxy Statement-Prospectus.     

     2.      To transact such other business as may properly come before the
meeting and any adjournments or postponements thereof.

    
     Only stockholders of record of Hazlehurst Common Stock designated as Class
A Common Stock at the close of business on March 8, 1994 are entitled to notice
of and to vote at the meeting and any adjournments or postponements 
thereof.     

     You are cordially invited to attend the Special Meeting.  Whether or not
you plan to attend, IF YOU ARE THE HOLDER OF SHARES OF CLASS A COMMON STOCK,
PLEASE COMPLETE, DATE, SIGN AND RETURN THE ENCLOSED PROXY CARD TO ASSURE THAT
YOUR SHARES WILL BE REPRESENTED AT THE SPECIAL MEETING.  A PREPAID RETURN
ENVELOPE IS ENCLOSED FOR YOUR CONVENIENCE.  IF YOU ATTEND THE SPECIAL MEETING,
YOU MAY VOTE YOUR SHARES IN PERSON WHETHER OR NOT YOU HAVE PREVIOUSLY SUBMITTED
A PROXY.

                                      By order of the Board of Directors,

 
                                      -----------------------------------------
                                      Frederick W. Owens, Corporate Secretary
    
March 16, 1994     

<PAGE>
 
                         HAZLEHURST & ASSOCIATES, INC.

                                PROXY STATEMENT
                               __________________

                           NORTHERN TRUST CORPORATION

                                   PROSPECTUS
                               _________________

    
          Northern Trust Corporation, a Delaware corporation ("NTC"), has filed
a Registration Statement on Form S-4 (together with all amendments and exhibits,
the "Registration Statement") with the Securities and Exchange Commission (the
"Commission") pursuant to the Securities Act of 1933, as amended (the
"Securities Act"), covering common shares, par value $1.66 2/3 per share, and
the associated Rights (as hereinafter defined) of NTC ("NTC Common Stock") to be
issued in connection with the Agreement and Plan of Reorganization, dated
December 12, 1993, as amended pursuant to Amendment No. 1 to the Agreement and 
Plan of Reorganization, dated as of March 6, 1994, by and among NTC, Hazlehurst
Merger Corporation, a Delaware corporation and wholly-owned subsidiary of NTC
("Acquisition"), Hazlehurst & Associates, Inc., a Delaware corporation
("Hazlehurst") and certain stockholders of Hazlehurst (the "Principal
Stockholders") and the related Agreement and Plan of Merger (collectively, the
"Merger Agreement" or the "Merger Agreements," as the context requires). The
Merger Agreement provides that, subject to the approval of the Merger Agreement
by the holders of shares of Class A common stock of Hazlehurst at a special
meeting of stockholders of Hazlehurst to be held April 14, 1994, including any
adjournments or postponements thereof (the "Special Meeting"), and satisfaction
of other conditions contained in the Merger Agreement, Acquisition will be
merged into Hazlehurst and Hazlehurst will become a subsidiary of NTC (the
"Merger"), and each issued and outstanding share of common stock of Hazlehurst
("Hazlehurst Common Stock"), other than shares held by persons who do not vote
in favor of the Merger and who properly exercise their appraisal rights by
following the procedures required under the Delaware General Corporation Law
("DGCL"), shall be converted into NTC Common Stock. This Proxy Statement-
Prospectus also constitutes the Prospectus of NTC filed as part of such
Registration Statement. See "Available Information." This Proxy Statement-
Prospectus is first being mailed to stockholders of Hazlehurst on or about March
16, 1994.    

          NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS OTHER THAN THOSE CONTAINED OR INCORPORATED BY REFERENCE IN THIS
PROXY STATEMENT-PROSPECTUS IN CONNECTION WITH THE SOLICITATION OF PROXIES OR THE
OFFERING OF SECURITIES MADE HEREBY AND, IF GIVEN OR MADE, SUCH INFORMATION OR
REPRESENTATION MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED BY NTC OR
HAZLEHURST.  THIS PROXY STATEMENT-PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO
SELL, OR A SOLICITATION OF AN OFFER TO BUY, ANY SECURITIES, OR THE SOLICITATION
OF A PROXY, IN ANY JURISDICTION, TO OR FROM ANY PERSON TO WHOM OR FROM WHOM IT
IS UNLAWFUL TO MAKE ANY SUCH OFFER OR SOLICITATION IN SUCH JURISDICTION.
NEITHER THE DELIVERY OF THIS PROXY STATEMENT-PROSPECTUS NOR ANY DISTRIBUTION OF
SECURITIES MADE HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION
THAT THERE HAS BEEN NO CHANGE IN THE AFFAIRS OF NTC OR HAZLEHURST SINCE THE DATE
OF THIS PROXY STATEMENT-PROSPECTUS OR THAT INFORMATION IN THIS PROXY STATEMENT-
PROSPECTUS OR IN THE DOCUMENTS INCORPORATED BY REFERENCE HEREIN IS CORRECT AS OF
ANY TIME SUBSEQUENT TO THE DATE HEREOF OR THE DATES THEREOF.
                               __________________

THE SECURITIES TO WHICH THIS PROXY STATEMENT-PROSPECTUS RELATES HAVE NOT BEEN
APPROVED OR DISAPPROVED BY THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE
SECURITIES COMMISSION NOR HAS THE SECURITIES AND EXCHANGE COMMISSION OR ANY
STATE SECURITIES COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROXY
STATEMENT-PROSPECTUS.  ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
                               __________________

    
        The date of this Proxy Statement-Prospectus is March 16, 1994.     
<PAGE>
 
                               TABLE OF CONTENTS
<TABLE> 
<CAPTION> 
                                                                           Page
                                                                           ----
<S>                                                                        <C> 
AVAILABLE INFORMATION....................................................     1

INCORPORATION OF CERTAIN INFORMATION BY REFERENCE........................     1

SUMMARY..................................................................     2
     The Companies.......................................................     2
     The Special Meeting.................................................     3
     Voting Rights and Votes Required for Approval.......................     3
     The Merger..........................................................     3
     Recommendation of the Board of Directors of Hazlehurst..............     4
     Regulatory Matters..................................................     4
     Certain Federal Income Tax Consequences.............................     4
     Appraisal Rights....................................................     4
     Interests of Certain Persons........................................     5
     Market Prices and Dividends.........................................     5
     Selected Consolidated Financial Data of NTC.........................     6
     Selected Financial Data of Hazlehurst...............................     7
     Historical and Pro Forma Comparative Per Share Data.................     8

THE SPECIAL MEETING......................................................     9
     Introduction........................................................     9
     Purpose.............................................................     9
     Record Date.........................................................     9
     Votes Required......................................................     9
     Voting and Revocation of Proxies....................................    10
     Solicitation of Proxies.............................................    10
     Certain Beneficial Owners of Hazlehurst Common Stock................    10

THE MERGER...............................................................    11
     Background of the Merger............................................    12
     Reasons for the Merger..............................................    13
     Recommendation of the Board of Directors of Hazlehurst..............    16
     Terms of the Merger.................................................    16
     Effective Time of the Merger........................................    17
     Surrender of Hazlehurst Common Stock Certificates and Payment.......    17
     Conditions to the Merger............................................    18
     Regulatory Approvals................................................    19
     Conduct of Business Pending the Merger..............................    19
     Waiver and Amendment................................................    20
     Termination.........................................................    21
     Indemnification.....................................................    21
     Expenses............................................................    22
     Interests of Certain Persons in the Merger..........................    22
     Employee Benefits...................................................    23
     Accounting Treatment................................................    23
     Certain Federal Income Tax Consequences.............................    23
     Resales of NTC Common Stock Issued in the Merger....................    24
     NASDAQ Reporting of NTC Common Stock Issued in the Merger...........    26
</TABLE> 
<PAGE>
 
<TABLE> 
<S>                                                                         <C> 
APPRAISAL RIGHTS OF HOLDERS OF HAZLEHURST COMMON STOCK..................    26

COMPARISON OF STOCKHOLDER RIGHTS........................................    28
     Capital Stock......................................................    29
     Voting Rights of Capital Stock.....................................    29
     Amendment of Certificate of Incorporation and Bylaws...............    31
     Board of Directors.................................................    32
     Special Meetings of Stockholders...................................    32
     Business Combinations..............................................    33
     Preferred Stock Purchase Rights....................................    34
     Taxation...........................................................    37

BUSINESS OF HAZLEHURST..................................................    37
     General............................................................    37
     Company Business Strategy..........................................    37
     Market Environment.................................................    38
     Employees..........................................................    39
     Properties.........................................................    39
     Legal Proceedings..................................................    39

LEGAL OPINIONS..........................................................    40

EXPERTS.................................................................    40

INDEX TO FINANCIAL STATEMENTS OF HAZLEHURST.............................   F-1
</TABLE> 

    
APPENDIX A:    Agreement and Plan of Reorganization; Amendment No. 1 to
               Agreement and Plan of Reorganization

APPENDIX B:    Agreement and Plan of Merger

APPENDIX C:    Title 8, Chapter 1, Section 262 of the Delaware General
               Corporation Law Relating to Appraisal Rights of Dissenting
               Stockholders     


<PAGE>
 
                             AVAILABLE INFORMATION
    
          NTC is subject to the informational requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance
therewith files reports, proxy statements and other information with the
Commission.  Reports, proxy statements and other information filed by NTC with
the Commission can be inspected and copied at the public reference facilities
maintained by the Commission at Room 1024, 450 Fifth Street, N.W., Washington,
D.C., 20549, and at the Commission's Regional Offices located at Seven World
Trade Center, 13th Floor, New York, New York 10048 and Northwestern Atrium
Center, 500 West Madison Street, Suite 1400, Chicago, Illinois 60661. Copies of
such material can be obtained from the Public Reference Section of the
Commission at 450 Fifth Street, N.W., Washington, D.C. 20549, at prescribed
rates. This Proxy Statement-Prospectus does not contain all of the information
set forth in the Registration Statement, certain parts of which are omitted in
accordance with the rules and regulations of the Commission. For further
information, reference is hereby made to the Registration Statement.    

          The information in this Proxy Statement-Prospectus concerning NTC and
its subsidiaries has been furnished by NTC and the information concerning
Hazlehurst has been furnished by Hazlehurst.  Hazlehurst is not subject to the
informational requirements of the Exchange Act.


               INCORPORATION OF CERTAIN INFORMATION BY REFERENCE
    
          The following documents filed with the Commission by NTC are hereby
incorporated by reference: (i) NTC's Annual Report on Form 10-K for the fiscal
year ended December 31, 1993; (ii) the description of NTC's Common Stock
contained in a Registration Statement filed pursuant to Section 12 of the
Exchange Act, and any amendment or report filed for the purpose of updating such
description, including Exhibit 99 to the Annual Report on Form 10-K for the year
ended December 31, 1993; and (iii) the description of NTC's Preferred Stock
Purchase Rights (the "Rights") contained in NTC's Registration Statement on Form
8-A, dated October 30, 1989.    

          All documents filed by NTC pursuant to Section 13(a), 13(c), 14 or
15(d) of the Exchange Act subsequent to the date of this Proxy Statement-
Prospectus and prior to the date of the Special Meeting shall be deemed to be
incorporated herein by reference and to be a part hereof from the date of such
filing.  Any statement contained herein or in a document incorporated by
reference or deemed to be incorporated by reference herein shall be deemed to be
modified or superseded for purposes of this Proxy Statement-Prospectus to the
extent that a statement contained in this Proxy Statement-Prospectus or in any
other subsequently filed document which also is, or is deemed to be,
incorporated by reference in this Proxy Statement-Prospectus modifies or
supersedes such statement.  Any such statement so modified or superseded shall
not be deemed, except as so modified or superseded, to constitute a part of this
Proxy Statement-Prospectus.

    
          THIS PROXY STATEMENT-PROSPECTUS INCORPORATES BY REFERENCE DOCUMENTS
WHICH ARE NOT PRESENTED HEREIN OR DELIVERED HEREWITH.  THESE DOCUMENTS,
EXCLUDING EXHIBITS UNLESS SPECIFICALLY INCORPORATED HEREIN, ARE AVAILABLE,
WITHOUT CHARGE, UPON WRITTEN OR ORAL REQUEST TO PETER L. ROSSITER, EXECUTIVE
VICE PRESIDENT, GENERAL COUNSEL AND SECRETARY, NORTHERN TRUST CORPORATION, FIFTY
SOUTH LASALLE STREET, CHICAGO, ILLINOIS 60675, TELEPHONE NUMBER (312) 630-6000.
IN ORDER TO ENSURE TIMELY DELIVERY OF THE DOCUMENTS, ANY REQUEST SHOULD BE MADE
BY APRIL 7, 1994.     

                                       1
<PAGE>
 
                                    SUMMARY

          The following is a brief summary of certain information contained
elsewhere in this Proxy Statement-Prospectus.  This summary does not contain a
complete statement of such information or of all material features of the Merger
and is qualified in its entirety by reference to, and should be read in
conjunction with, the detailed information and financial statements included or
incorporated by reference in this Proxy Statement-Prospectus.  Certain
capitalized terms used in this summary are defined elsewhere in this Proxy
Statement-Prospectus.

THE COMPANIES

          NTC.  NTC is a bank holding company within the meaning of the Bank
Holding Company Act of 1956, as amended (the "BHCA").  NTC was organized in
Delaware in 1971 and in that year became the owner of all the outstanding
capital stock, except directors' qualifying shares, of The Northern Trust
Company (the "Bank"), an Illinois banking corporation located in the Chicago
financial district.  NTC also owns three other banks in the Chicago metropolitan
area, a bank in each of Florida, Arizona, Texas and California and various other
non-banking subsidiaries, including a securities brokerage firm and a futures
commission merchant.  NTC expects that although the operations of other
subsidiaries will be of increasing significance, the Bank will in the
foreseeable future continue to be the major source of NTC's assets, revenues and
net income.
    
          At December 31, 1993, NTC had consolidated total assets of
approximately $16.9 billion and stockholders' equity of $1.2 billion.  At June
30, 1993, NTC was the third largest bank holding company headquartered in
Illinois and the fortieth (40th) largest in the United States, based on
consolidated total assets of approximately $16.3 billion on that date.  As of
December 31, 1993, the aggregate market capitalization of NTC's Common Stock,
based on the closing price of $39.63 on that date on the National Association of
Securities Dealers Automated Quotation -- National Market System ("NASDAQ
National Market System") was $2.1 billion.  NTC's net income for the year
ended December 31, 1993 was $167.9 million, up 12% from the same period in
1992.     

          NTC's executive offices are located at Fifty South LaSalle Street,
Chicago, Illinois 60675, and its telephone number is (312) 630-6000.  For
additional information regarding NTC, see "RECENT DEVELOPMENTS."

          HAZLEHURST.  Hazlehurst is an employee benefits firm providing
services designed exclusively for corporate retirement programs.  Hazlehurst's
services include benefit recordkeeping and administrative services, actuarial
and consulting services, and software and systems products and services.
Hazlehurst's corporate headquarters are located in Atlanta, Georgia, and it has
an office in Seattle, Washington.
    
          For the year ended December 31, 1993, Hazlehurst reported net revenues
of approximately $14.9 million and net income of approximately $1.5 million.
     

          Hazlehurst commenced business in 1971 as a Georgia corporation.  In
1976, the Georgia corporation was merged into a newly formed Delaware
corporation, with the Delaware corporation surviving.  Hazlehurst's corporate
headquarters are located at 400 Perimeter Center Terrace, Suite 850, Atlanta,
Georgia 30346, and its telephone number is (404) 395-9880.  For

                                       2
<PAGE>
 
additional information regarding Hazlehurst and its business, see "SUMMARY--
Selected Financial Data of Hazlehurst," "BUSINESS OF HAZLEHURST," and "INDEX TO
FINANCIAL STATEMENTS OF HAZLEHURST."

THE SPECIAL MEETING
    
          The Hazlehurst Special Meeting will be held at 400 Perimeter Center
Terrace, Suite 850, Atlanta, Georgia 30346 on Thursday, April 14, 1994, at
10:00 a.m., local time, for the purpose of considering and voting upon the
Merger Agreement.  Only holders of record of Hazlehurst Common Stock designated
as Class A Common Stock ("Hazlehurst Voting Stock") at the close of business on
March 8, 1994 (the "Record Date") are entitled to vote at the special meeting;
however, all holders of record of Hazlehurst Common Stock, whether designated as
Hazlehurst Voting Stock or Class B Common Stock ("Hazlehurst Nonvoting Stock")
at the close of business on the Record Date are entitled to notice of the
Special Meeting, and, if the Merger is consummated, will have appraisal rights.
See "APPRAISAL RIGHTS OF HOLDERS OF HAZLEHURST COMMON STOCK."  As of the Record
Date, 101,838 shares of Hazlehurst Common Stock were issued and outstanding, of
which 16,350 are designated as Hazlehurst Voting Stock, and 85,488 are
designated as Hazlehurst Nonvoting Stock.  See "THE SPECIAL MEETING."     

VOTING RIGHTS AND VOTES REQUIRED FOR APPROVAL

          Under Delaware law, the Merger Agreement must be approved by the
affirmative vote of the holders of a majority of the outstanding shares of
Hazlehurst Voting Stock.  Each share of Hazlehurst Voting Stock is entitled to
one vote on the Merger Agreement.  Shares of Hazlehurst Nonvoting Stock have no
voting rights.  Approval of the Merger Agreement and the Merger by NTC's
stockholders is not required under Delaware or other applicable law, or the
rules of the National Association of Securities Dealers, Inc., which rules cover
the NASDAQ National Market System on which sales prices of the NTC Common Stock
are reported.  As of the Record Date for the Special Meeting, Hazlehurst's
directors and executive officers held approximately 80.4% of the outstanding
Hazlehurst Voting Stock, and the directors, executive officers and affiliates of
NTC held no shares of Hazlehurst Voting Stock.  Pursuant to the Merger
Agreement, the Principal Stockholders, who owned approximately 76.5% of the
Hazlehurst Voting Stock as of the Record Date, have agreed to vote or direct the
vote of all Hazlehurst Voting Stock over which they have control for approval of
the Merger Agreement.  Accordingly, approval of the Merger Agreement by the
requisite majority vote is assured.  See "THE SPECIAL MEETING."

THE MERGER
    
          The Merger Agreement provides for the merger of Acquisition with and
into Hazlehurst, with Hazlehurst as the surviving corporation.  Except as
described under "THE MERGER--Terms of the Merger," upon consummation of the
Merger, each outstanding share of Hazlehurst Common Stock will be converted into
the right to receive that number of shares of NTC Common Stock equal to the
quotient obtained by dividing the total number of shares of NTC Common Stock
issuable in the Merger, determined in accordance with the immediately succeeding
sentence, by the total number of shares of Hazlehurst Common Stock outstanding
as of the effective time of the Merger.  The number of shares of NTC Common
Stock to be issued in the Merger will be that number of shares having a market
value equal to $22,500,000 determined on the basis of the unweighted average of
the last sale prices for the NTC Common Stock, as reported by NASDAQ National
Market System for the fifteen (15) trading days ending on the third trading day
     
                                       3
<PAGE>
 
preceding the effective time of the Merger (the "Closing Date Value"), but not
more than 681,818 nor fewer than 468,750 (unless Hazlehurst shall so elect as
hereinafter described) shares.  Each outstanding share of NTC's capital stock
will remain outstanding.  Holders of Hazlehurst Common Stock will receive cash
(without interest) in lieu of fractional shares of NTC Common Stock.  See "THE
MERGER--Terms of the Merger."

RECOMMENDATION OF THE BOARD OF DIRECTORS OF HAZLEHURST

          The Board of Directors of Hazlehurst is unanimously of the view that
the Merger is fair to and in the best interests of its stockholders and
recommends a vote FOR the matters to be voted upon by such stockholders in
connection with the Merger.  See "THE MERGER--Reasons for the Merger;
Recommendation of the Board of Directors of Hazlehurst."

REGULATORY MATTERS

          The Merger is subject to the prior approval of the Board of Governors
of the Federal Reserve System (the "Federal Reserve Board") under Section
4(c)(8) of the BHCA.  The Merger Agreement provides that the obligation of each
of NTC and Hazlehurst to consummate the Merger is conditioned upon the approval
of the Federal Reserve Board upon terms and subject to conditions that are
satisfactory to NTC.  NTC has filed an application with the Federal Reserve
Board for prior approval of the Merger.  There can be no assurance as to whether
the Federal Reserve Board will approve or take other required action with
respect to the Merger or as to the date of such approval or action.  See "THE
MERGER--Regulatory Approvals."

CERTAIN FEDERAL INCOME TAX CONSEQUENCES

          Alston & Bird, counsel for Hazlehurst, has delivered to Hazlehurst and
the Principal Stockholders an opinion that, among other things, (i) no gain or
loss will be recognized by a Hazlehurst stockholder who receives solely shares
of NTC Common Stock pursuant to the Merger, (ii) the aggregate tax basis of the
NTC stock received by a Hazlehurst stockholder will equal the aggregate tax
basis of the Hazlehurst stock surrendered therefor by such stockholder and (iii)
the holding period of the NTC stock received generally will include the holding
period of the Hazlehurst stock surrendered.  For a more complete description of
the federal income tax consequences of the Merger, see "THE MERGER--Certain
Federal Income Tax Consequences."  Due to the individual nature of the tax
consequences of the Merger, it is recommended that each Hazlehurst stockholder
consult his or her own tax advisor concerning the tax consequences of the
Merger.

APPRAISAL RIGHTS

          If the Merger is consummated, holders of Hazlehurst Common Stock will
have appraisal rights, provided that such stockholders comply with certain
statutory procedures.  Failure to take any step in connection with the exercise
of such appraisal rights in a timely manner may result in the loss or waiver of
those rights.  Under the terms of the Merger Agreement, NTC and Acquisition are
not obligated to consummate the Merger if the holders of more than 10% of the
shares of Hazlehurst Common Stock seek to exercise appraisal rights.  See "THE
MERGER--Conditions to the Merger" and "APPRAISAL RIGHTS OF HOLDERS OF HAZLEHURST
COMMON STOCK."

                                       4

<PAGE>
 
INTERESTS OF CERTAIN PERSONS

          NTC has agreed that, as of the Effective Time, it will, together with
Hazlehurst, enter into an employment agreement with each of Messrs. James G.
Pope, R. David Parsons, David M. Gladstone, T. Ray McKinney and Barry J. Young
and Ms. Cynthia Jeness.  The employment agreements provide for a five year term
unless otherwise terminated as hereinafter described.  See "THE MERGER--
Interests of Certain Persons in the Merger."

MARKET PRICES AND DIVIDENDS

          NTC Common Stock is traded in the over-the-counter market under the
symbol "NTRS."  The following table sets forth the high and low closing sales
prices per share of NTC Common Stock as reported on the NASDAQ National Market
System for the periods indicated.  The table also sets forth the per share
dividend declared for each quarter presented.  All data in the table have been
adjusted to reflect the three-for-two stock split distributed to NTC
stockholders on December 9, 1992.

<TABLE>
<CAPTION>
                                                              DIVIDENDS
                                               HIGH    LOW    DECLARED
                                              ------  ------  ---------
<S>                                           <C>     <C>     <C>
1992                                                                  
  First Quarter.............................  $35.67  $32.83    $.160 
  Second Quarter............................   40.00   34.00     .160 
  Third Quarter.............................   40.00   37.67     .160 
  Fourth Quarter............................   43.00   37.17     .185 
1993                                                                  
  First Quarter.............................   49.62   40.50     .185 
  Second Quarter............................   50.50   40.00     .185 
  Third Quarter.............................   44.25   39.50     .185 
  Fourth Quarter............................   43.25   37.25     .220 
1994                                                                  
  First Quarter (through March 8, 1994).....   43.00   39.75     .220   
</TABLE>
    
          On December 10, 1993, the last full trading day prior to issuance of a
press release announcing that NTC and Hazlehurst had entered into the Merger
Agreement, the last reported sale price per share of NTC Common Stock was
$41.25.  On March 14, 1994, the last full trading day for which information was
available prior to the mailing of this Proxy Statement-Prospectus, the last
reported sale price per share reported for NTC Common Stock was $42.00.     

          STOCKHOLDERS ARE ADVISED TO OBTAIN CURRENT MARKET QUOTATIONS FOR NTC
COMMON STOCK.  NO ASSURANCE CAN BE GIVEN AS TO THE MARKET PRICE OF NTC COMMON
STOCK AT OR AFTER THE EFFECTIVE TIME OF THE MERGER.

                                       5
<PAGE>
 
SELECTED CONSOLIDATED FINANCIAL DATA OF NTC
    
          The following table sets forth, on an historical basis, certain
selected consolidated financial data for NTC.  This summary has been derived
from, and should be read in conjunction with, the consolidated financial
statements of NTC and the related notes thereto incorporated herein by
reference.     

<TABLE>
<CAPTION>
                                                      Year Ended December 31,
                                      -----------------------------------------------------
                                        1993        1992       1991      1990       1989
                                      ---------  ---------  ---------  ---------  ---------
<S>                                   <C>        <C>        <C>        <C>        <C>
                                           (Dollars in millions, except per share data)
Net Interest Income                   $   329.3  $   311.2  $   281.9  $   249.3  $   237.4
Provision for Credit Losses                19.5       29.5       31.0       14.0       16.0
Noninterest Income
   Trust Fees                             404.8      368.4      303.1      270.7      237.2
   Other                                  147.6      141.0      109.7       98.6       94.9
Noninterest Expenses                      628.2      584.6      500.1      464.9      428.6
Provision for Income Taxes                 66.1       57.0       36.2       24.3       11.7
Net Income                                167.9      149.5      127.4      115.4      113.2
Net Income Applicable to                                                                    
    Common Stock                          161.6      142.7      121.4      109.2      105.8 
Per Common Share
   Net Income - Primary                    2.96       2.64       2.29       2.06       2.08
              - Fully Diluted              2.95       2.64       2.27       2.05       2.01
   Dividends Declared                  0.77 1/2   0.66 1/2       0.58       0.52   0.43 2/3
Average Total Assets                   15,700.2   13,418.0   12,182.5   11,682.1   10,521.9
Notes Payable at Year-End                 326.8      233.2      264.1      171.6      240.8
Senior Medium-Term Notes at Year-End      817.0      312.0        2.0         --         --
</TABLE>
 
Note:  Per common share data reflect the three-for-two stock split in December 
       1992.

                                       6
<PAGE>
 

SELECTED FINANCIAL DATA OF HAZLEHURST
    
       The following table sets forth, on a historical basis, certain selected
financial data for Hazlehurst.  This summary has been derived from, and should
be read in conjunction with, the financial statements of Hazlehurst and the
related notes thereto included elsewhere in this Proxy Statement-Prospectus. See
"INDEX TO FINANCIAL STATEMENTS OF HAZLEHURST."    
<TABLE>
<CAPTION>
                                         Year Ended December 31,           
                               -------------------------------------------
                                1993     1992     1991     1990     1989    
                               -------  -------  -------  -------  -------  
<S>                            <C>      <C>      <C>      <C>      <C>
                              (Dollars in thousands, except per share data)
Total Revenues                 $14,857  $15,473  $15,839  $13,779  $12,821  
Operating Expenses              13,392   13,875   13,883   11,563   10,238  
Income Before Income Taxes       1,465    1,598    1,956    2,216    2,583  
Income Taxes                        --       --       --       --       --  
Net Income                       1,465    1,598    1,956    2,216    2,583  
Total Assets                     9,534    9,367   10,158    8,999    8,868  
Net Income Per Common Share      14.40    15.67    19.22    22.25    26.58  
Dividends Declared Per                                                      
 Common Share                    16.73    15.58    15.33    16.78    15.77 
</TABLE>

                                       7
<PAGE>
 

HISTORICAL AND PRO FORMA COMPARATIVE PER SHARE DATA
    
       The following summary presents selected comparative per share data for
NTC Common Stock and Hazlehurst Common Stock on an historical basis, unaudited
per share data for NTC on a pro forma basis, assuming the Merger had been
effective during the three-year period ended December 31, 1993, and unaudited
per share data for Hazlehurst on an equivalent pro forma share basis, assuming
the Merger had been effective during the three-year period ended December 31, 
1993. The data presented should be read in conjunction with the historical
consolidated financial statements of NTC and the related notes thereto
incorporated by reference herein and the financial statements and the related
notes thereto of Hazlehurst included elsewhere in this Proxy Statement-
Prospectus. See "INDEX TO FINANCIAL STATEMENTS OF HAZLEHURST."    
<TABLE>
<CAPTION>
                                         HISTORICAL               PRO FORMA/1/
                               -----------------------------  ----------------------
                                         Year Ended                Year Ended
                                        December 31,              December 31,
                               -----------------------------  ----------------------
NTC                               1993       1992      1991    1993    1992    1991
- ---                            ----------  ---------  ------  ------  ------  ------
<S>                            <C>         <C>        <C>     <C>     <C>     <C>
Book value per share.........  $    18.42     --        --    $18.35    --      --
Cash dividends declared per
 common share................  $ 0.77 1/2  $0.66 1/2  $ 0.58  $ 0.80  $ 0.69  $ 0.60
Income (Loss) per common
 share - Fully diluted.......  $     2.95  $    2.64  $ 2.27  $ 2.95  $ 2.64  $ 2.29
</TABLE>
 
<TABLE>
<CAPTION>
                                      HISTORICAL                EQUIVALENT/2/
                               ------------------------    -----------------------
                                      Year Ended                 Year Ended
                                     December 31,               December 31,
                               ------------------------    -----------------------
HAZLEHURST                      1993     1992     1991      1993    1992     1991
- ----------                     ------   ------   ------    ------  ------   ------
<S>                            <C>      <C>      <C>       <C>     <C>      <C>
Book value per share.........  $58.63      --      --      $97.17    --       -- 

Cash dividends declared per
 common share................  $16.73   $15.58   $15.33    $ 4.23  $ 3.65   $ 3.20


Income (Loss) per common
 share.......................  $14.40   $15.67   $19.22    $15.61  $13.97   $12.11
</TABLE>
- ----------
    
/1/ Pro forma calculations were prepared as of March 11, 1994.  For purposes
    of these calculations, the number of shares of NTC common stock to be issued
    in the Merger having a market value equal to $22,500,000  was determined
    based on the unweighted average of the last sales prices for the NTC common
    stock as reported by NASDAQ National Market System for the fifteen trading
    days ending on the third trading day preceding March 11, 1994.  Based on
    these assumptions, the estimated number of shares of NTC common stock to be
    issued is 538,600, with an exchange ratio of 5.2959 NTC common shares for
    each Hazlehurst share.     

    
/2/ Equivalent pro forma per share amounts were calculated by multiplying the
    pro forma income per share before non-recurring charges or credits
    directly attributable to the transaction, the pro forma book value per
    share, and the pro forma cash dividends declared per share of NTC by the
    exchange ratio so that the per share amounts are equated to the respective
    values for one share of Hazlehurst.     

                                       8

<PAGE>
 
                              THE SPECIAL MEETING
 
INTRODUCTION
    
        This Proxy Statement-Prospectus is being furnished to the stockholders
of Hazlehurst in connection with the solicitation of proxies by the Board of
Directors of Hazlehurst for use at the Special Meeting.  The Special Meeting
will be held at 400 Perimeter Center Terrace, Suite 850, Atlanta, Georgia 30346
on Thursday, April 14, 1994, at 10:00 a.m., local time.  This Proxy
Statement-Prospectus is first being mailed to stockholders of Hazlehurst on or
about March 16, 1994.     

PURPOSE

        The Special Meeting will be held for the purpose of considering and
voting upon the Merger Agreement and to transact any and all other business that
may properly come before the meeting or any adjournments or postponements
thereof.

RECORD DATE

        Only holders of record of Hazlehurst Voting Stock at the close of
business on the Record Date are entitled to vote at the Special Meeting.
However, holders of record of both Hazlehurst Voting Stock and Hazlehurst
Nonvoting Stock as of the Record Date are entitled to notice of the Special
Meeting, and, if the Merger is consummated, will have the right either to
receive the Merger Price (as hereinafter defined), which will be the same for
the Hazlehurst Voting Stock and the Hazlehurst Nonvoting Stock, or to seek an
appraisal of their shares.  See "THE MERGER--Terms of the Merger" and "APPRAISAL
RIGHTS OF HOLDERS OF HAZLEHURST COMMON STOCK."

VOTES REQUIRED
    
        As of the Record Date, 101,838 shares of Hazlehurst Common Stock were
issued and outstanding, of which 16,350 are designated as Hazlehurst Voting
Stock and 85,488 are designated as Hazlehurst Nonvoting Stock.  Each holder of
record of shares of Hazlehurst Voting Stock is entitled to cast, for each share
registered in his or her name, one vote on the Merger Agreement and on each
other matter presented to a vote of the stockholders at the Special Meeting.
Holders of record of shares of Hazlehurst Nonvoting Stock are not entitled to
vote on the Merger Agreement.     

        The affirmative vote of the holders of a majority of the outstanding
Hazlehurst Voting Stock is required to approve the Merger Agreement.  As of the
Record Date, directors and executive officers of Hazlehurst were the owners of
13,150 shares of Hazlehurst Voting Stock (approximately 80.4% of the outstanding
Hazlehurst Voting Stock).  Pursuant to the Merger Agreement, the Principal
Stockholders have agreed to vote or direct the vote of all Hazlehurst Voting
Stock over which they have control for approval of the Merger Agreement.  As of
the Record Date, the Principal Stockholders were the owners of 12,500 shares of
Hazlehurst Voting Stock (approximately 76.5%). Accordingly, approval of the
Merger Agreement by the requisite majority vote is assured.

                                       9

<PAGE>
 
        Approval of the Merger Agreement by the stockholders of NTC is not
required under Delaware or other applicable law or under the rules of the
National Association of Securities Dealers, Inc., which rules govern the NASDAQ
National Market System on which the sales prices for NTC Common Stock are
reported.

VOTING AND REVOCATION OF PROXIES

        Shares of Hazlehurst Voting Stock represented by a proxy properly signed
and received at or prior to the Special Meeting, unless subsequently revoked,
will be voted in accordance with the instructions thereon.  IF A PROXY IS SIGNED
AND RETURNED WITHOUT ANY VOTING INSTRUCTIONS, SHARES OF HAZLEHURST VOTING STOCK
REPRESENTED BY THE PROXY WILL BE VOTED FOR THE PROPOSAL TO APPROVE THE MERGER
AGREEMENT.  Any proxy given pursuant to this solicitation may be revoked by the
person giving it at any time before the proxy is voted by the filing of an
instrument revoking it or of a duly executed proxy bearing a later date with the
Secretary of Hazlehurst, prior to or at the Special Meeting, or by voting in
person at the Special Meeting.  All written notices of revocation and other
communications with respect to the revocation of Hazlehurst proxies should be
addressed to:  Hazlehurst & Associates, Inc., 400 Perimeter Center Terrace,
Suite 850, Atlanta, Georgia 30346, Attention:  Frederick W. Owens, Corporate
Secretary.  Attendance at a Special Meeting will not, in and of itself,
constitute a revocation of a proxy.

        The Board of Directors of Hazlehurst is not aware of any business to be
acted upon at the Special Meeting other than as described herein.  If, however,
other matters are properly brought before the Special Meeting, or any
adjournments or postponements thereof, the persons appointed as proxies will
have discretion to vote or act on such matters according to their best judgment.

SOLICITATION OF PROXIES

        All expenses of solicitation of Hazlehurst stockholders in connection
with the Special Meeting will be borne by Hazlehurst.  In addition to
solicitation by use of the mails, proxies may be solicited by directors,
officers and employees of Hazlehurst in person or by telephone, telegram or by
other means of communication.  Such directors, officers and employees will not
be additionally compensated, but may be reimbursed for out-of-pocket expenses in
connection with such solicitation.

CERTAIN BENEFICIAL OWNERS OF HAZLEHURST COMMON STOCK

        As of the date of this Proxy Statement-Prospectus, the following persons
are known by Hazlehurst to be the beneficial owners of more than 5% of the
outstanding shares of Hazlehurst Voting Stock.  The number of shares set forth
opposite each person's name is owned by such person in his or her individual
capacity, and no other person or entity has any rights to beneficial ownership
of the shares.

                                       10


<PAGE>
 
<TABLE>
<CAPTION>
                                   NUMBER OF SHARES OF
 NAME AND ADDRESS                HAZLEHURST VOTING STOCK              PERCENT
OF BENEFICIAL OWNER                BENEFICIALLY OWNED                 OF CLASS
- -------------------              -----------------------              --------
<S>                              <C>                                  <C>
R. David Parsons                           5,000                        30.6%
3588 Tuckers Farm                                                            
Marietta, Georgia 30067                                                      
                                                                             
James G. Pope                              5,000                        30.6%
11275 Bowen Road                                                             
Roswell, Georgia  30075                                                      
                                                                             
David M. Gladstone                         2,500                        15.3%
19119 North Creek Parkway,                                                   
  Suite 200                                                                  
Seattle, Washington  98011                                                   
                                                                             
Cynthia Jeness                             2,500                        15.3% 
329 Robin Hood Road
Atlanta, Georgia  30309
</TABLE>

          As of the date of this Proxy Statement-Prospectus, the directors and
executive officers of Hazlehurst named below and all directors and executive
officers of Hazlehurst as a group beneficially own the following number of
shares of Hazlehurst Voting Stock.  The number of shares set forth opposite each
person's name is owned by such person in his or her individual capacity, and no
other person or entity has any rights to beneficial ownership of the shares.

<TABLE>
<CAPTION>
 
                                           NUMBER OF SHARES          PERCENT
DIRECTORS AND EXECUTIVE OFFICERS          BENEFICIALLY OWNED        OF CLASS
- ----------------------------------        ------------------        ---------
<S>                                       <C>                       <C>
R. David Parsons                                 5,000                30.6%
James G. Pope                                    5,000                30.6%
David M. Gladstone                               2,500                15.3%
T. Ray McKinney                                    650                 4.0%
                                                                           
All Directors and Executive                                                
  Officers as a Group                           13,150                80.4% 
</TABLE>


                                   THE MERGER
    
          This section of the Proxy Statement-Prospectus describes certain
aspects of the proposed Merger.  To the extent that the following description
relates to the Merger Agreements, it does not purport to be complete and is
qualified in its entirety by reference to the Merger Agreements, which are
attached as Appendix A and B to this Proxy Statement-Prospectus and are
incorporated herein by reference.  ALL STOCKHOLDERS ARE URGED TO READ THE MERGER
AGREEMENTS IN THEIR ENTIRETY.     

                                       11
<PAGE>
 
BACKGROUND OF THE MERGER

          In May 1993, NTC and Hazlehurst began discussions regarding the
possibility of NTC purchasing from Hazlehurst certain capabilities to enable NTC
to provide recordkeeping services to its clients.  These capabilities, referred
to by Hazlehurst as "Facilities Management," included systems, associated
maintenance, processes, procedures, training, and assistance from Hazlehurst as
needed to actually perform the recordkeeping services.  Several representatives
from NTC visited Hazlehurst's offices in Atlanta, Georgia in May 1993, but no
agreement on this proposal was ever reached.

          On September 8, 1993, Connie Magnuson, a Senior Vice President of the
Bank, telephoned James G. Pope, President and a Director of Hazlehurst, to
advise him that NTC had made several strategy decisions regarding NTC's business
directions, and she requested that several representatives of NTC be permitted
to visit Hazlehurst's office in Atlanta.  On September 10, 1993, Ms. Magnuson
along with Dennis Sain, a Vice President of the Bank, and Jeffrey H. Wessel, an
Executive Vice President of the Bank, met with Mr. Pope and expressed NTC's
interest in acquiring Hazlehurst.  Mr. Pope indicated that he would like to know
more about NTC's plans and, on September 17, 1993, Mr. Wessel sent to Mr. Pope
by telecopy a statement of NTC's proposal for integrating Hazlehurst as a part
of NTC, focusing on the combined capabilities of the two companies.

          At an informal meeting of Hazlehurst's Board of Directors on September
23, 1993, Mr. Pope informed the other Directors of NTC's initiation of
discussions regarding its possible acquisition of Hazlehurst.  The Directors
unanimously agreed that Hazlehurst should continue to hold discussions with NTC
management about the proposal and that Mr. Pope should act as the company's
representative in these discussions.

          On October 8, 1993, Mr. Sain and Ms. Magnuson met in Atlanta with Mr.
Pope and R. David Parsons, Chairman of the Board of Hazlehurst, to discuss
general information regarding Hazlehurst's capabilities, structure, personnel
and employee benefits, as well as information regarding the management and
financial condition of NTC.  On October 10, 1993, Mr. Pope met with Mr. Wessel
in Chicago to continue the discussions, and on October 20, 1993, Messrs. Pope
and Parsons met in Chicago with each of NTC's Chairman of the Board and Senior
Executive Vice Presidents for the purpose of discussing NTC's management
objectives.

          On November 5, 1993, a meeting was held in Atlanta between Mr. Wessel
of NTC, and Mr. Pope of Hazlehurst, during which the possible price and
structure of the acquisition were discussed for the first time.  NTC proposed
that the transaction be structured as a taxable acquisition of substantially all
of the assets of Hazlehurst.  On November 9, 1993 Messrs. William N. Setterstrom
and Martin J. Joyce, each a Senior Vice President of the Bank, met in Atlanta
with Mr. Parsons to review and compare the employee benefit programs and
practices of Hazlehurst and NTC.  On November 11, 1993, the Hazlehurst Board of
Directors met again on an informal basis, and the Directors reviewed the status
of the discussions with NTC and determined that discussions should continue.

          On November 16, 1993, a dinner meeting was held in Atlanta for the
purpose of introducing and allowing an exchange of information among certain key
officers and employees of Hazlehurst and Mr. Wessel of the Bank.  Present at
this meeting were Messrs. Pope and Parsons,
   
                                      12
<PAGE>
 
and David M. Gladstone and T. Ray McKinney, each an Executive Vice President and
Director of Hazlehurst, and Barry J. Young of Hazlehurst.

          On November 18, 1993, Mr. Pope met in Miami, Florida with the
President and the Chief Financial Officer of NTC's Florida subsidiary bank, and
on November 23, 1993, Mr. Pope talked at length by telephone with the President
of NTC's Texas subsidiary bank.  Both of these communications were for the
purpose of permitting Mr. Pope to gather information about NTC's relationships
with its subsidiaries and field operations.

          Following a meeting of NTC's Board of Directors, on November 23, 1993
Mr. Pope met in Chicago with Messrs. Wessel and Setterstrom.  At this meeting,
the representatives of NTC and Hazlehurst discussed changes that the NTC Board
desired in the preliminary structure of the proposed transaction.  Among these
changes, NTC suggested that the transaction be structured as a nontaxable merger
accounted for as a pooling-of-interests.

          On December 1, 1993, Messrs. Pope and Wessel met in Atlanta, at which
time Mr. Pope responded favorably on behalf of Hazlehurst to certain aspects of
NTC's revised proposal, including structuring the transaction as a merger and
treating it as a pooling-of-interests, and Mr. Pope suggested alternative terms
regarding certain other aspects.  NTC generally accepted the alternative terms,
and the results of this meeting formed the basis for the final period of
negotiations.

    
          From December 1 through December 12, 1993, the respective legal
counsel for NTC and Hazlehurst continued negotiations with respect to the
proposed Merger Agreement and related documents. The Hazlehurst Board of
Directors met in Atlanta on December 12, 1993 and approved the Merger and the
Merger Agreement.  The Merger Agreement was executed that same day.  A public
announcement of the execution and delivery of the Merger Agreement was made on
December 13, 1993. On March 6, 1994, the Merger Agreement was amended in the 
manner set forth in Amendment No. 1 to the Merger Agreement attached hereto as 
Appendix A.      

REASONS FOR THE MERGER

          Hazlehurst.  The Hazlehurst Board of Directors, after consideration of
relevant business, financial, legal and market factors, including the
compatibility of the operations and management of Hazlehurst and NTC, and the
financial condition, results of operations and future prospects of Hazlehurst
and NTC, has concluded that the Merger is in the best interests of Hazlehurst
and its stockholders.  The factors considered included the following:

          1.   The financial terms of the Merger.  In this regard, the Board was
               of the view that the purchase price represents a fair price,
               taking into account Hazlehurst's annual net income, substantial
               retained earnings and its expectations for future growth of
               revenues and profits.  The Board considered Hazlehurst's value
               and projected value, prospects and risks in operating as an
               independent entity in comparison to increased value and enhanced
               prospects in operating on a combined basis with NTC.

          2.   The non-financial terms and structure of the Merger, in
               particular that the Merger is anticipated to be tax-free to
               Hazlehurst stockholders.  See "Certain Federal Income Tax
               Consequences."

                                      13
<PAGE>
 
          3.   A comparison of Hazlehurst's continuing prospects in operating as
               an independent entity as opposed to combining with NTC.  The
               Board in particular concluded that:

               a.   The combination of Hazlehurst and NTC capabilities would
                    enhance Hazlehurst's ability to compete in the rapidly
                    changing, exceedingly competitive market for recordkeeping
                    services.

               b.   Access to NTC's client base would provide a significant
                    opportunity to add clients for both recordkeeping and
                    actuarial services.

               c.   The potential of amortizing Hazlehurst's cost of product
                    development over the broader client base represented by NTC
                    would allow Hazlehurst to maintain competitive pricing while
                    continuing to offer state-of-the-art services.

               d.   Access to NTC's staff, technology and capital would also
                    enhance Hazlehurst's ability to build capacity to meet the
                    growing needs of current and future clients.

          4.   Certain financial and other information concerning NTC.  Such
               information included, among other things, information with
               respect to the business, operations, condition, and future
               prospects of NTC.

          5.   The fact that the combination of Hazlehurst and NTC services,
               including:

               a. Trust and custodial services
               b. Asset management capabilities
               c. Investment consulting services
               d. Personal trust and private banking services
               e. Pension plan recordkeeping and administration services
               f. Retirement and actuarial consulting services
               g. Process engineering capacity
               h. System development capacity

               will provide a competitive advantage in the retirement services
               industry.

          6.   Various other factors, including among them:

               a.   A significant degree of compatibility of Hazlehurst and NTC
                    in several areas, including business strategy, view of the
                    future direction of the retirement plan services market,
                    quality programs, and types of clients serviced.

               b.   The fact that Hazlehurst, as a wholly owned subsidiary of
                    NTC, will be able to maintain the independence and culture
                    that has facilitated its past growth and success.

                                      14
<PAGE>
 
               c.   Significant and expanded career opportunities for
                    Hazlehurst's professional staff and employees generated by
                    anticipated growth.

          The Hazlehurst Board believes that all of the above-noted factors will
allow the combined group to assemble a retirement plan servicing capability, and
a sales and support process, that will allow it to better compete for, and
retain, retirement services business and to rapidly adapt to changes in the
retirement services industry.

          The Board of Directors of Hazlehurst did not identify any material
factors that did not support its recommendation in favor of the Merger.  Due to
the wide variety of factors considered in connection with its evaluation of the
Merger, the Hazlehurst Board did not quantify or otherwise attempt to assign
relative weights or rankings to the specific factors considered in reaching its
determination.

          The Merger was specifically negotiated to bring together Hazlehurst's
recordkeeping and consulting services with NTC's trust and investment management
services.  Therefore, during the course of the Hazlehurst Board's consideration
and approval of the Merger, no other companies were considered or approached by
the Hazlehurst Board regarding a Merger with, or acquisition of, Hazlehurst.

          The Board of Directors of Hazlehurst has not sought or obtained an
opinion of an independent investment banking firm as to the fairness to the
Hazlehurst stockholders, from a financial point of view, of the purchase price
or any other aspect of the Merger.  However, the Board of Directors of
Hazlehurst has reviewed the terms of the Merger, and discussed the same with its
accounting firm and legal counsel, and believes that such terms are fair to the
stockholders of Hazlehurst, and that consummation of the Merger is in the best
interests of Hazlehurst and its stockholders.  Each stockholder is advised to
consider carefully the impact of the failure to have any independent inquiry as
to the fairness of the Merger and, accordingly, is advised to consult his or her
investment or tax advisor when considering the Merger.

          NTC.  The retirement services industry is presently undergoing a major
change, with an increasing shift in focus from defined benefit plans to defined
contribution plans.  As a result, in addition to providing such long-standing
services to the defined contribution plan market as investment management,
custody and trusteeship, NTC believes that in order to remain competitive in the
retirement services market it must be able to offer such additional services as
participant recordkeeping, voice response technology, participant servicing,
plan design, participant education and communication.  Hazlehurst has developed
a variety of technologically advanced administrative products to better serve
the employer and participants in its plans, including voice response technology
for participant asset allocations and daily valuation of account balances.  See
"BUSINESS OF HAZLEHURST."

          NTC believes that the proposed acquisition of Hazlehurst will enable
it to be competitive in serving the retirement market as it changes.  By
combining NTC's capabilities with the additional retirement services that
Hazlehurst provides, NTC believes that it can better service its existing
clients and compete more effectively for new clients in the retirement services
industry.  The proposed Merger with Hazlehurst is intended to facilitate this
goal.

                                      15
<PAGE>
 
RECOMMENDATION OF THE BOARD OF DIRECTORS OF HAZLEHURST

          THE BOARD OF DIRECTORS OF HAZLEHURST UNANIMOUSLY RECOMMENDS THAT YOU
VOTE FOR APPROVAL OF THE MERGER AGREEMENT.

TERMS OF THE MERGER

          At the Effective Time (as defined below), Acquisition will be merged
with and into Hazlehurst, and Hazlehurst shall be the surviving corporation and
a wholly owned subsidiary of NTC.  The Restated Certificate of Incorporation of
Hazlehurst, as in effect immediately prior to the Effective Time, shall continue
in effect as the Restated Certificate of Incorporation of the surviving
corporation until amended or repealed in accordance with applicable law.  The
bylaws of Acquisition, as in effect immediately prior to the Effective Time,
will continue in effect as the bylaws of the surviving corporation until amended
or repealed in accordance with applicable law.

          Each share of Hazlehurst Common Stock issued and outstanding
immediately prior to the Effective Time shall be converted into the right to
receive that number of whole shares of NTC Common Stock equal to the quotient
obtained by dividing the total number of shares of NTC Common Stock issuable in
the Merger, determined in accordance with the immediately succeeding sentence,
by the total number of shares of Hazlehurst Common Stock outstanding as of the
Effective Time (the "Merger Price").  The number of shares of NTC Common Stock
to be issued in the Merger will be that number of shares having a market value
equal to $22,500,000, determined by using the Closing Date Value, but not more
than 681,818 nor fewer than 468,750 (unless Hazlehurst shall so elect as
hereinafter described) shares of NTC Common Stock (before giving effect to the
payment of cash in lieu of fractional shares or to any reduction in the number
of shares issuable in the Merger as a result of the exercise of appraisal rights
by dissenting stockholders of Hazlehurst).  In the event the Closing Date Value
of NTC Common Stock shall be less than $33 per share, Hazlehurst may terminate
the Merger Agreement and, in the event the Closing Date Value of NTC Common
Stock is greater than $48 per share, NTC may, subject to the Company Option (as
hereinafter defined), terminate the Merger Agreement.  See "Termination."
Pursuant to the Merger Agreement, in the event the Closing Date Value shall be
less than $33 per share, Hazlehurst may, notwithstanding its right to terminate
the Merger Agreement as described above, elect for its stockholders to receive
in the aggregate 681,818 shares (i.e., such number of shares of NTC Common Stock
that shall have a market value equal to $22,500,000, derived by using a
valuation of NTC Common Stock of $33 per share).  In the event the Closing Date
Value shall be more than $48 per share, Hazlehurst may elect for its
stockholders to receive in the aggregate fewer than 468,750 shares (i.e., such
number of shares of NTC Common Stock that shall have a market value equal to
$22,500,000, derived by using the Closing Date Value).  The option of Hazlehurst
to elect for its stockholders to receive the number of shares described in the
two immediately preceding sentences, is referred to herein as the "Company
Option."

          No fractional shares of NTC Common Stock will be issued in the Merger.
Instead, the Merger Agreement provides that each holder of Hazlehurst Common
Stock who would otherwise have been entitled to receive a fraction of a share of
NTC Common Stock (after taking into account all certificates evidencing
Hazlehurst Common Stock delivered by such holder) will receive, in lieu thereof,
a cash amount equal to the value of such fractional share based upon the Closing
Date Value of NTC Common Stock.

                                      16
<PAGE>
 
          Shares of NTC capital stock issued and outstanding immediately prior
to the Effective Time will remain issued and outstanding.

EFFECTIVE TIME OF THE MERGER
    
          The Merger will become effective at the time (the "Effective Time")
and the date (the "Effective Date") that a duly executed and acknowledged
Certificate of Merger is filed with the Secretary of State of the State of
Delaware in accordance with the requirements of the DGCL.  The parties intend to
make such a filing as promptly as possible following the Special Meeting,
provided that the Merger and the Merger Agreement are approved by the
affirmative vote of the holders of a majority of the outstanding shares of
Hazlehurst Voting Stock, the Federal Reserve Board has approved the acquisition
of control of Hazlehurst by NTC resulting from the Merger pursuant to the BHCA,
and all other conditions precedent to consummation of the Merger are satisfied.
The parties currently anticipate that the Merger will occur on or about April
15, 1994, although there can be no assurance as to whether or when the Merger
will occur.  NTC and Hazlehurst each have the right to terminate the Merger
Agreement if the Merger has not been consummated on or before June 30, 1994.
See "Conditions to the Merger," "Regulatory Approvals" and "Termination."
     

SURRENDER OF HAZLEHURST COMMON STOCK CERTIFICATES AND PAYMENT

          Not later than promptly after the Effective Time, Harris Trust and
Savings Bank, acting in the capacity of exchange agent for NTC (the "Exchange
Agent"), will mail to each former holder of record of shares of Hazlehurst
Common Stock a form of letter of transmittal, together with instructions for the
exchange of Hazlehurst stock certificates for certificates representing NTC
Common Stock.

          STOCKHOLDERS SHOULD NOT SEND IN THEIR CERTIFICATES UNTIL THEY RECEIVE
THE LETTER OF TRANSMITTAL FORM AND INSTRUCTIONS.

          Upon surrender to the Exchange Agent of one or more certificates for
Hazlehurst Common Stock, together with a properly completed letter of
transmittal, there will be issued and mailed to the holder thereof a certificate
or certificates representing the number of shares of NTC Common Stock to which
such holder is entitled, together with all declared but unpaid dividends in
respect of such shares and, where applicable, a check for the amount
representing any fractional shares (without interest).  A certificate for NTC
Common Stock or any check representing cash in lieu of fractional shares and/or
declared but unpaid dividends, may be issued in a name other than the name in
which the surrendered certificate is registered only if (i) the certificate
surrendered is properly endorsed, accompanied by a guaranteed signature if
required by the letter of transmittal and otherwise in proper form for transfer
and (ii) the person requesting the issuance of such certificate either pays to
the Exchange Agent any transfer or other taxes required by reason of the
issuance of a certificate for such shares in a name other than the registered
holder of the certificate surrendered or establishes to the satisfaction of the
Exchange Agent that such tax has been paid or is not applicable.  Lost, stolen,
mutilated or destroyed certificates will be replaced by the Exchange Agent with
a newly issued certificate if the owner of the lost, stolen, mutilated, or
destroyed certificate gives the Exchange Agent an indemnification bond against
any claim that may be made concerning the lost, stolen, mutilated, or destroyed
certificate or the newly-issued certificate.

                                      17
<PAGE>
 
          All NTC Common Stock issued pursuant to the Merger will be deemed
issued as of the Effective Time.  Dividends declared by NTC after the Effective
Time will include dividends on all shares of NTC Common Stock issued in the
Merger and will be paid when the Hazlehurst certificates have been surrendered.
After the Effective Time, there will be no transfers on the transfer books of
Hazlehurst of the shares of Hazlehurst Common Stock that were outstanding
immediately prior to the Effective Time.  If, after the Effective Time,
certificates representing such shares are presented for transfer to the Exchange
Agent, they will be canceled and exchanged for certificates representing shares
of NTC Common Stock in accordance with the Merger Agreement.

CONDITIONS TO THE MERGER

          The Merger will occur only if the Merger Agreement is approved by the
requisite vote of the holders of Hazlehurst Voting Stock.  The consummation of
the Merger is further subject to the satisfaction of certain other conditions
specified in the Merger Agreement, unless waived (to the extent that waiver is
permitted by law).  Such conditions include the following:  (i) the receipt of
the approval of the Federal Reserve Board, upon terms and conditions
satisfactory to NTC, and there shall be no motion for rehearing or appeal from
such approval or commencement of any suit or action seeking to enjoin the
transactions provided for pursuant to the Merger Agreement or to obtain
substantial damages in respect of them; (ii) the effectiveness of the
Registration Statement and the absence of a stop order suspending such
effectiveness; (iii) the absence of an order, decree or injunction of a court or
agency of competent jurisdiction enjoining or prohibiting consummation of the
Merger; (iv) the receipt by NTC from Arthur Andersen & Co., independent public
accountants, of a letter satisfactory in form and in substance to NTC that the
Merger qualifies for pooling-of-interests accounting treatment; (v) receipt by
Hazlehurst of an opinion of its counsel to the effect that the Merger will
constitute a reorganization within the meaning of Section 368 of the Code, and
that no gain or loss will be recognized by the stockholders of Hazlehurst to the
extent that they receive NTC capital stock solely in exchange for their
Hazlehurst capital stock in the Merger; (vi) no material adverse change in the
business, income, operations, assets, liabilities, financial condition or
prospects of Hazlehurst, on the one hand, or NTC on the other hand, shall have
occurred between the date of the Merger Agreement and the Effective Date; (vii)
Hazlehurst shall have received any third party consents to the transactions
contemplated by the Merger Agreement required under any contracts to which
Hazlehurst is a party; (viii) certain key employees of Hazlehurst shall have
entered into employment agreements with Hazlehurst and NTC; (ix) NTC and
Hazlehurst shall have received comfort letters, dated the date of this Proxy
Statement-Prospectus and the Effective Date, from Arthur Andersen & Co. and
Price Waterhouse, respectively, reasonably satisfactory to NTC and Hazlehurst
and their respective counsel, covering matters requested by NTC and Hazlehurst;
and (x) not more than 10% of the holders of shares of Hazlehurst Common Stock
shall  have sought to exercise appraisal rights.  See "Regulatory Approvals,"
"Waiver and Amendment" and "Termination."

          Each party's obligation to effect the Merger is also subject, unless
waived, to (i) the absence of any material breach by the other party in the
performance of its obligations under the Merger Agreement and (ii) the continued
accuracy, on the Effective Date, of the representations and warranties of the
other party contained in the Merger Agreement.  Such representations and
warranties relate, among other things, to the organization and capitalization of
NTC and Hazlehurst, the authorization and enforceability of the Merger
Agreement, the financial statements of NTC and Hazlehurst and certain documents
filed by NTC with the Commission, the operations of NTC and Hazlehurst since the
date of the most recent balance sheet of each company, and, with respect to

                                       18

<PAGE>
 
Hazlehurst, compliance with laws, litigation, absence of undisclosed
liabilities, taxes, properties and assets, and absence of certain changes or
events.

          No assurance can be given as to when or if all of the conditions
precedent to the Merger can or will be satisfied or waived by the party
permitted to waive such condition.

REGULATORY APPROVALS

          The Merger is subject to prior approval by the Federal Reserve Board
under the BHCA.  Section 4(c)(8) of the BHCA requires that NTC obtain the
approval of the Federal Reserve Board prior to acquiring any company engaged in
nonbanking activities.  NTC may acquire such an entity only after the Federal
Reserve Board has determined (by order or regulation) that the activities of
such an entity are so closely related to banking or to managing or controlling
banks as to be a proper incident thereto.

          In evaluating NTC's application, the Federal Reserve Board will also
consider whether NTC's performance of the non-banking activities referred to in
its application can reasonably be expected to produce benefits to the public,
such as greater convenience, increased competition, and gains in efficiency,
that outweigh possible adverse effects, such as a new concentration of
resources, decreased or unfair competition, conflicts of interest and unsound
banking practices.  The Federal Reserve Board will also evaluate the financial
and managerial resources of Northern, its subsidiaries and Hazlehurst and the
effect of the proposed Merger on those resources.

          The BHCA provides for the publication of notice and public comment on
the applications and authorizes the Federal Reserve Board to permit interested
parties to intervene in the proceedings.  If an interested party is permitted to
intervene, such intervention could delay the regulatory approvals required for
consummation of the Merger.  NTC filed its application with the Federal Reserve
Board on January 25, 1994.

          The Merger Agreement provides that the obligation of each of NTC and
Hazlehurst to consummate the Merger is conditioned upon the receipt of all
requisite regulatory approvals, including the approval of the Federal Reserve
Board, upon terms and subject to conditions satisfactory to NTC.  See
"Conditions to the Merger," "Waiver and Amendment" and "Termination."  There can
be no assurance that the Federal Reserve Board will approve NTC's application to
acquire Hazlehurst, and, if approval is received, there can be no assurance as
to the date of such approval, that such approval will not be conditioned upon
matters that would cause the parties to abandon the Merger or that no action
will be brought challenging such approvals or action, or, if such a challenge is
made, the result thereof.

CONDUCT OF BUSINESS PENDING THE MERGER

          Under the Merger Agreement, NTC and Hazlehurst have each agreed to
conduct their businesses in the ordinary course consistent with past practice
pending the Merger.  Hazlehurst has agreed to use its best efforts to preserve
its reputation and relationship with suppliers, clients, customers, employees
and others with which it has business relationships.  In addition, Hazlehurst
has agreed that, except as expressly contemplated by the Merger Agreement or
with the prior written consent of NTC, prior to the Effective Time (i) no change
shall be made in the certificate of incorporation or bylaws of Hazlehurst; (ii)
no change shall be made in the

                                       19

<PAGE>
 
capitalization of Hazlehurst or in the number of issued and outstanding shares
of Hazlehurst, except for any repurchases by Hazlehurst of its shares of common
stock pursuant to the terms of the Stockholder Agreement dated July 31, 1987,
and for the issuance of the Bonus Plan Shares (as defined in the Merger
Agreement); (iii) the compensation or benefits of officers or key employees of
Hazlehurst shall not be increased and no bonuses shall be paid except for normal
and customary increases made or bonuses paid or accrued or booked on or before
September 30, 1993 in accordance with past practices; (iv) except for a normal
year-end dividend of $880,000 in the aggregate, no dividends or other
distributions shall be declared or paid by Hazlehurst; (v) Hazlehurst shall use
its best efforts to maintain its present insurance coverage in respect to its
properties and business; (vi) no significant changes shall be made in the
general nature of the business conducted by Hazlehurst; (vii) no employment,
consulting, or other similar agreements shall be entered into by Hazlehurst that
are not terminable by Hazlehurst on 30 days' notice or less without penalty or
obligation, except for contracts with existing or new clients of Hazlehurst and
normal maintenance contracts of Hazlehurst entered into in the ordinary course
consistent with past practice; (viii) Hazlehurst shall not take any action that
would result in a termination, partial termination, curtailment, discontinuance
of a Benefit Plan (as defined in the Merger Agreement) or merger of any Benefit
Plan into another plan or trust; (ix) the stockholders owning in excess of 2% of
the shares of Hazlehurst Common Stock shall file all tax returns in a timely
manner and shall not make any application for or consent to any extension of
time for filing any tax return or any extension of the period of limitations
applicable thereto; (x) Hazlehurst shall not make any expenditure for fixed
assets in excess of $125,000 for any single item, or $500,000 in the aggregate,
or enter into leases of fixed assets having an annual rental in excess of
$100,000; (xi) Hazlehurst shall not incur any liabilities or obligations, make
any commitments or disbursements, acquire or dispose of any property or asset,
make any contract or agreement, or engage in any transaction except in the
ordinary course consistent with past practices; (xii) Hazlehurst shall not do or
fail to do anything that will cause a breach of, or default under, any contract,
agreement, commitment, obligation, appointment, plan, trust or other arrangement
to which Hazlehurst is a party or by which it is otherwise bound; and (xiii) no
changes of a material nature shall be made in Hazlehurst's accounting
procedures, methods, policies or practices or the manner in which Hazlehurst
maintains its records.

WAIVER AND AMENDMENT

          Prior to or at the Effective Time, any provision of the Merger
Agreement, including, without limitation, the conditions to the consummation of
the Merger, may be waived, to the extent permitted under law, in writing by the
party which is entitled to the benefits thereof.  The Merger Agreement provides
that the parties may amend or modify the Merger Agreement by mutual agreement in
writing.  Under Section 251 of the DGCL, however, any amendment to the Merger
Agreement made after its adoption by the holders of Hazlehurst Voting Stock and
by NTC, as sole stockholder of Acquisition, may not (1) alter or change the
amount or kind of shares, securities, cash, property and/or rights to be
received in exchange for or on conversion of the Hazlehurst Common Stock, (2)
alter or change any term of the certificate of incorporation of the surviving
corporation, or (3) alter or change any of the terms or conditions of the Merger
Agreement if such alteration or change would adversely affect the holders of any
class or series of stock of either Hazlehurst or Acquisition, unless such
amendment is approved by NTC, as sole stockholder of Acquisition, and by the
requisite vote of the holders of Hazlehurst Voting Stock.

                                       20

<PAGE>
 
TERMINATION

          The Merger Agreement provides that it will terminate (i) at any time
by written agreement among the parties thereto, (ii) automatically if the
Closing (as defined in the Merger Agreement) has not occurred by June 30, 1994
(or such later date agreed to by the Boards of Directors of NTC and Hazlehurst),
as a result of the failure to satisfy any conditions to NTC's obligation to
close, which failure is the result of the occurrence of (1) a material adverse
change since September 30, 1993 in the business, income, operations, assets,
liabilities, financial condition, or prospects of Hazlehurst, or (2) any
condition, event, circumstance, fact or other occurrence that may reasonably be
expected to have or result in such a material adverse change (a "Company
Material Adverse Change"), (iii) automatically upon the parties entering into a
Software Licensing Agreement (as hereinafter described), (iv) at the election of
Hazlehurst, if the Closing Date Value of the NTC Common Stock is less than $33
per share, and (v) subject to the Company Option, at the election of NTC, if the
Closing Date Value of the NTC Common Stock is greater than $48 per share.

          The Merger Agreement also provides that in the event any of the
conditions to Closing (as defined in the Merger Agreement) shall fail to be
satisfied by June 30, 1994 and such failure is not the result of a Company
Material Adverse Change, the parties will, in lieu of consummating the Merger
Agreement, enter into a Software Licensing Agreement pursuant to which
Hazlehurst will lease all of the software it uses in the conduct of its business
to NTC and will provide the expertise necessary to operate such software for a
period of five years from the date of such agreement at an annual minimum cost
of $1,500,000.  In the event the parties enter into a Software Licensing
Agreement, Hazlehurst will grant NTC a right of first refusal to acquire
Hazlehurst in the event it receives a third party acquisition offer upon terms
substantially similar to those set forth in such third party offer.

          In the event of the termination of the Merger Agreement pursuant to
the termination provisions thereof, the Merger Agreement will become void and
have no effect, except that no party will be relieved or released from any
liability arising out of any breach of any provision of the Merger Agreement
occurring prior to such termination, nor shall any termination affect any rights
accrued prior to such termination.

INDEMNIFICATION

    
          The Merger Agreement provides that certain stockholders of Hazlehurst
owning in the aggregate 91.7% of the outstanding shares of Hazlehurst Common
Stock (the "Indemnifying Stockholders") will jointly and severally indemnify NTC
and Hazlehurst, as the surviving corporation, against (i) all losses,
liabilities, claims, demands, deficiencies, causes of actions or suits (the
"Claims") arising out of or resulting from any breach or incorrectness of any of
the statements, representations, warranties, or agreements of Hazlehurst or the
Principal Stockholders contained in the Merger Agreement (except Section 2.4 of
the Merger Agreement for which indemnification is several but not joint) or in
any documents delivered to NTC by or on behalf of Hazlehurst or the Principal
Stockholders, (ii) the reasonable expenses or costs incurred by NTC or
Hazlehurst, including reasonable attorneys' fees, in connection with
investigating or defending against Claims asserted against NTC or Hazlehurst for
which NTC or Hazlehurst is entitled to be indemnified.  Under the Merger
Agreement, neither NTC nor Hazlehurst is entitled to be indemnified until the
aggregate amount of liability suffered by either of them exceeds $500,000,
whereupon NTC and Hazlehurst will be entitled to indemnification for the
aggregate of all liabilities suffered in excess     

                                       21

<PAGE>
 
of $500,000.  In any event, the Indemnifying Stockholders will not be obligated
to indemnify NTC or Hazlehurst for any liabilities exceeding in the aggregate $8
million.  NTC has agreed to indemnify the Principal Stockholders on the same
terms described above for claims and related expenses and costs arising out of
breaches by NTC.

          The indemnification obligations of both NTC and the Indemnifying
Stockholders will continue for a period of one year after the Effective Date.

EXPENSES

          The Merger Agreement provides that each of the parties will bear its
own costs and expenses (including fees and disbursements of counsel,
accountants, and financial or other advisors) incurred by it in connection with
the consummation of the transactions contemplated thereby.

INTERESTS OF CERTAIN PERSONS IN THE MERGER

          Pursuant to the Merger Agreement, NTC has agreed, together with
Hazlehurst, to enter into employment agreements with each of Messrs. James G.
Pope, R. David Parsons and David M. Gladstone, each of whom is a Principal
Stockholder, director and executive officer of Hazlehurst (each an "Executive").
The basic terms of these employment agreements provide that each Executive will
serve for a period of five years, unless otherwise terminated as hereinafter
described.  Each Executive will also be entitled for so long as he is employed
by Hazlehurst to participate in NTC's Long-Term Performance Stock Plan on the
basis of performance goals relating to the financial performance of Hazlehurst
and NTC, and to receive an annual cash incentive award in accordance with an
incentive plan that will be based primarily on the financial performance of
Hazlehurst and will be consistent with other existing compensation plans of
NTC.  The employment agreement of any Executive may be terminated by either NTC
or Hazlehurst at any time for "cause" or in the event of an Executive's death or
disability.  The term "cause" is defined in the employment agreements to include
an Executive's (i) conviction of any criminal violation involving dishonesty,
fraud or breach of trust, (ii) wilful engagement in any misconduct in the
performance of his duties that injures Hazlehurst in a significant manner, (iii)
wilful and substantial nonperformance of assigned duties, or (iv) violation of
certain non-competition and confidentiality provisions contained in the
employment agreements.

          Pursuant to the employment agreements, each Executive has agreed
during the term of his employment and for a period of three years thereafter not
to solicit or render services to any client of Hazlehurst or to compete with
Hazlehurst in any geographical area in which Hazlehurst presently does business.
Each Executive has also agreed to certain restrictions on the use of
confidential information of Hazlehurst.

          NTC has also agreed, together with Hazlehurst, to enter into
employment agreements with each of Messrs. T. Ray McKinney and Barry J. Young
and Ms. Cynthia Jeness (the "Additional Executives").  The basic terms of each
Additional Executive's employment agreement provide that such Additional
Executive will serve for a period of five years, unless otherwise terminated
for "cause" (as defined above) or in the event of such Additional Executive's
death or disability.  Each of the Additional Executives will also be entitled 
for so long as he or she is employed by Hazlehurst to participate in the NTC
Incentive Stock Plan and to receive an annual cash incentive award in accordance
with an additional incentive plan that will be based primarily on the financial
performance of Hazlehurst and will be consistent with other existing
compensation plans of NTC.

                                       22

<PAGE>
 
          Pursuant to these employment agreements, each Additional Executive,
during the term of his or her employment and for a period of two years
thereafter, shall be subject to a covenant restricting competition with
Hazlehurst.  Each Additional Executive shall also be subject to certain
restrictions on the use of confidential information of Hazlehurst.

EMPLOYEE BENEFITS

          NTC has agreed, effective as of January 1, 1995, to provide generally
to employees of Hazlehurst, employee benefits, including without limitation,
pension benefits, health and welfare benefits, and vacation arrangements, on
terms and conditions substantially similar to those provided from time to time
by NTC and its subsidiaries to their similarly situated employees.  Following
the Effective Time and through December 31, 1994, employees of Hazlehurst will
continue to participate in Hazlehurst's existing benefit programs.

ACCOUNTING TREATMENT

          Consummation of the Merger is conditioned upon the receipt by NTC of a
letter from Arthur Andersen & Co., NTC's independent public accountants, to the
effect that the Merger qualifies for pooling-of-interests accounting treatment
if consummated in accordance with the Merger Agreement.

          Under the pooling-of-interests method of accounting, the historical
basis of the assets and liabilities of NTC and Hazlehurst will be combined at
the Effective Time and carried forward at their previously recorded amounts, and
the stockholders' equity accounts of NTC and Hazlehurst will be combined on
NTC's consolidated balance sheet and no goodwill or other intangible assets will
be created.

          The unaudited pro forma per share information contained in this Proxy
Statement-Prospectus has been prepared based upon the use of the pooling-of-
interests accounting method to account for the Merger.  See "SUMMARY--
Comparative Unaudited Per Share Information."

CERTAIN FEDERAL INCOME TAX CONSEQUENCES

          The following is a summary description of certain federal income tax
consequences of the Merger.  This summary is not a complete description of all
the consequences of the Merger and, in particular, may not address federal
income tax considerations that may affect the treatment of a stockholder who
acquired Hazlehurst stock pursuant to an employee stock option.  Each
stockholder's individual circumstances may affect the tax consequences of the
Merger to such stockholder.  In addition, no information is provided herein with
respect to the tax consequences of the Merger under applicable foreign, state or
local laws.  Consequently, each Hazlehurst stockholder is advised to consult his
or her own tax advisor as to the specific tax consequences of the Merger.

          Neither NTC nor Hazlehurst has requested or will receive an advance
ruling from the Internal Revenue Service as to the tax consequences of the
Merger.  Hazlehurst has received an opinion from Alston & Bird, its counsel,
concerning certain federal income tax consequences, based upon certain customary
representations set forth therein.  Based, in part, on such representations,
Alston & Bird has advised Hazlehurst and the Principal Stockholders that in its
opinion:

                                       23

<PAGE>
 
          (i) The Merger will constitute a reorganization within the meaning of
     Section 368(a) of the Internal Revenue Code of 1986, as amended (the
     "Code"), and NTC, Acquisition and Hazlehurst will each be a party to the
     reorganization within the meaning of Section 368(b) of the Code;

          (ii)  No gain or loss will be recognized by Hazlehurst stockholders
     who receive solely shares of NTC Common Stock pursuant to the Merger;

          (iii)  The receipt of cash in lieu of fractional shares of NTC Common
     Stock will be treated as if the fractional shares were distributed as part
     of the exchange and then were redeemed by NTC.  The tax consequences of the
     assumed redemption will be determined in accordance with Section 302 of the
     Code.  If the redemption meets one of four tests set forth in that section,
     the Hazlehurst stockholder will be treated as if the stockholder sold his
     or her fractional share of NTC Common Stock for the amount of cash
     received.  Therefore, such stockholder will recognize gain (or loss) to the
     extent that the amount of the cash received exceeds (or is less than) the
     tax basis allocable to the fractional share.  Generally, the tax basis of
     the fractional share will equal a pro rata portion of the total basis of
     all the stockholder's NTC Common Stock received in the exchange.  Any gain
     or loss recognized will be a capital gain or loss, assuming that the
     fractional share of NTC Common Stock would have been a capital asset in the
     hands of the Hazlehurst stockholder, such gain or loss will be a long-term
     capital gain or loss if such Hazlehurst Common Stock was held for more than
     one year, and the holding period for the fractional share will include the
     stockholder's holding period for his Hazlehurst Common Stock surrendered.
     If none of the four tests provided in Section 302 is met, the assumed
     redemption will be treated as a dividend, and the Hazlehurst stockholder
     will most likely be required to recognize as ordinary income the full
     amount of the cash received;

          (iv)  The tax basis of the shares of NTC Common Stock received by a
     Hazlehurst stockholder will be equal to the tax basis of the shares of
     Hazlehurst Common Stock exchanged therefor, decreased by the amount of any
     cash received the Hazlehurst stockholder and increased by the amount of
     gain recognized by the Hazlehurst stockholder on such exchange; and

          (v)  The holding period of the shares of NTC Common Stock received
     pursuant to the Merger by the Hazlehurst stockholders will include the
     holding period of the shares of Hazlehurst Common Stock exchanged therefor
     provided that the Hazlehurst Common Stock was held as a capital asset at
     the Effective Time of the Merger.

RESALES OF NTC COMMON STOCK ISSUED IN THE MERGER

     Stockholders of Hazlehurst who are not "affiliates" of Hazlehurst (as such
term is defined under the Securities Act) may resell NTC Common Stock acquired
by them in connection with the Merger without restriction.

     As required by the Merger Agreement, each person who may be deemed to be
an "affiliate" of Hazlehurst has executed and delivered to NTC an agreement
("Affiliate Letter") which provides, among other things, that such affiliate
will not sell, transfer, or otherwise dispose of any NTC Common Stock to be
received by such affiliate pursuant to the Merger except in compliance with the
Securities Act and the rules and regulations promulgated thereunder.  The NTC
Common

                                       24
<PAGE>
 
Stock held by affiliates of Hazlehurst who do not become affiliates of NTC after
the consummation of the Merger may not be sold except pursuant to an effective
registration statement under the Securities Act covering such shares, or in
compliance with Rule 145 promulgated under the Securities Act or another
applicable exemption from the registration requirements of the Securities Act. 
Generally, Rule 145 permits NTC Common Stock held by such stockholders to be
sold in accordance with certain provisions of Rule 144 under the Securities 
Act.  In general, these provisions of Rule 144 permit a person to sell on the
open market in broker's transactions within any three-month period a number of
shares that does not exceed the greater of 1% of the then outstanding shares of
NTC Common Stock or the average weekly trading volume in NTC Common Stock on the
NASDAQ National Market System during the four calendar weeks proceeding such
sale.  Sales under Rule 144 are also subject to the availability of current
public information about NTC.  The restrictions on sales will cease to apply
under most circumstances once the former Hazlehurst affiliate has held the NTC
Common Stock  for at least two years.  The NTC Common Stock  held by affiliates
of Hazlehurst who will be affiliates of NTC will be subject to additional
restrictions on the ability of such persons to sell such shares.

     Each Affiliate Letter also provides that, notwithstanding the permissible
sales of stock described above, each affiliate of Hazlehurst may not sell or in
any other way reduce his or her risk relative to, any shares of Hazlehurst
Common Stock or of NTC Common Stock during the period commencing thirty days
prior to the Effective Date and ending on the date on which financial results
covering at least thirty days of post-Merger combined operations of NTC and
Hazlehurst have been published.

                                       25
<PAGE>
 
NASDAQ REPORTING OF NTC COMMON STOCK ISSUED IN THE MERGER

          Sales of the NTC Common Stock to be issued in the Merger in exchange
for Hazlehurst Common Stock will be reported on the NASDAQ National Market
System.


             APPRAISAL RIGHTS OF HOLDERS OF HAZLEHURST COMMON STOCK

          Under Section 262 of the DGCL ("Section 262"), if the Merger is
consummated, holders of record of shares of Hazlehurst Common Stock with respect
to which appraisal rights have been perfected and not withdrawn or lost will be
entitled, by complying with the provisions of Section 262, to have the "fair
value" of their shares of Hazlehurst Common Stock at the Effective Time
(exclusive of any element of value arising from the accomplishment or
expectation of the Merger) judicially determined and paid to them.

          The following summary of Section 262 sets forth the procedures by
which a holder of Hazlehurst Common Stock may dissent from the Merger and demand
statutory appraisal rights.  The following summary does not purport to be a
complete statement of the provisions of Section 262 and is qualified in its
entirety by reference to Section 262, a copy of which is attached hereto as
Appendix B, and to any amendments to Section 262 as may be adopted after the
date of this Proxy Statement-Prospectus.  The provisions for demanding appraisal
are complex and must be complied with precisely.  Any Hazlehurst stockholder
intending to dissent from the proposed Merger should review carefully the text
of Section 262 and is also advised to consult legal counsel.

          Holders of record of Hazlehurst Common Stock who desire to exercise
their appraisal rights must satisfy all of the following conditions.  A written
demand for appraisal of shares of Hazlehurst Common Stock must be delivered to
the Corporate Secretary of Hazlehurst before the taking of the vote to approve
the Merger Agreement.  Such written demand for appraisal of shares of Hazlehurst
Common Stock must be in addition to and separate from any proxy or vote
abstaining from voting on or voting against the adoption of the Merger
Agreement.  Voting against, abstaining from voting on or failing to vote on the
Merger Agreement will not constitute a demand for appraisal within the meaning
of Section 262.  In addition, any holder of Hazlehurst Common Stock wishing to
exercise his or her appraisal rights must hold such shares of record on the date
the written demand for appraisal is made, must continue to hold such shares
until the Effective Time of the Merger, and must otherwise comply with the
provisions of Section 262.

          Holders of Hazlehurst Common Stock electing to exercise their
appraisal rights under Section 262 must not vote for the adoption of the Merger
Agreement or consent thereto in writing.  If a holder of Hazlehurst Common Stock
returns a signed proxy but does not specify a vote against adoption of the
Merger Agreement or a direction to abstain from voting on the adoption of the
Merger Agreement, the proxy will be voted for adoption of the Merger Agreement.
Such action will have the effect of waiving such holder's appraisal rights and
will nullify any written demand for appraisal submitted by such holder.

          A demand for appraisal must be executed by or for the stockholder of
record, fully and correctly, as such stockholder's name appears on the stock
certificate representing such stockholder's shares of Hazlehurst Common Stock.
If shares of Hazlehurst Common Stock are owned of record in a fiduciary
capacity, such as by a trustee, guardian or custodian, such demand must be
executed by the fiduciary.  If shares of Hazlehurst Common Stock are owned of
record by

                                      26
<PAGE>
 
more than one person, as in a joint tenancy or tenancy in common, such demand
must be executed by all owners.  An authorized agent, including an agent for two
or more joint or common owners, may execute the demand for appraisal for a
stockholder of record; however, the agent must identify the record owner or
owners and expressly disclose the fact that, in exercising the demand, he is
acting as agent for the record owner or owners.

          A record owner who holds Hazlehurst Common Stock as a nominee for
others may exercise his right of appraisal with respect to the shares of
Hazlehurst Common Stock held for all or less than all beneficial owners of
shares as to which he is the record owner.  In such case, the written demand
must set forth the number of shares of Hazlehurst Common Stock covered by such
demand.  Where the number of shares is not expressly stated, the demand will be
presumed to cover all shares of Hazlehurst Common Stock outstanding in the name
of such record owner.  Hazlehurst stockholders who hold shares in brokerage
accounts or other nominee forms and who wish to exercise appraisal rights are
urged to consult with their brokers to determine the appropriate procedures for
the making of a demand for appraisal by such a nominee.

          A stockholder who elects to exercise appraisal rights should mail or
deliver his written demand to Hazlehurst & Associates, Inc., 400 Perimeter
Center Terrace, Suite 850, Atlanta, Georgia 30346, Attention: Frederick W.
Owens, Corporate Secretary.  The written demand for appraisal should specify the
stockholder's name and mailing address and the number of shares of Hazlehurst
Common Stock covered by the demand and should state that the stockholder is
thereby demanding appraisal of such shares.  Within ten days after the Effective
Date, Hazlehurst, as the surviving corporation, must provide notice that the
Merger has become effective to all Hazlehurst stockholders who timely complied
with Section 262 and did not vote for adoption of the Merger Agreement.

          Within 120 days after the Effective Date but not thereafter, either
Hazlehurst, as the surviving corporation, or any holder of shares of Hazlehurst
Common Stock who has complied with the requirements of Section 262 may file a
petition in the Delaware Court of Chancery demanding a determination of the fair
value of the shares of Hazlehurst Common Stock held by all stockholders entitled
to appraisal.  Inasmuch as Hazlehurst has no obligation to file such a petition,
the failure of a stockholder to do so within the period specified could nullify
such stockholder's previous written demand for appraisal.  In any event, at any
time within 60 days after the Effective Date (or at any time thereafter with the
written consent of Hazlehurst), any stockholder who has demanded appraisal has
the right to withdraw the demand and to accept payment of the merger
consideration provided in the Merger Agreement.

          If a petition for appraisal is duly filed by a Hazlehurst stockholder
and a copy thereof is delivered to Hazlehurst, Hazlehurst will then be obligated
within 20 days to provide the Court of Chancery with a duly verified list
containing the names and addresses of all stockholders who have demanded an
appraisal of their shares.  After notice to such stockholders, the Court of
Chancery is empowered to conduct a hearing upon the petition to determine those
stockholders who have compiled with Section 262 and who have become entitled to
appraisal rights under that section.  The Court may require the stockholders who
demanded payment for their shares to submit their stock certificates to the
Register in Chancery for notation thereon of the pendency of the appraisal
proceedings; and if any stockholder fails to comply with such direction, the
Court may dismiss the proceedings as to such stockholder.

                                      27
<PAGE>
 
          If a petition for appraisal is timely filed, after a hearing on such
petition, the Delaware Court of Chancery will determine which stockholders are
entitled to appraisal rights and thereafter will appraise the shares of
Hazlehurst Common Stock, determining the fair value of such shares exclusive of
any element of value arising from the accomplishment or expectation of the
Merger.  When the value is so determined, the Court will direct the payment by
Hazlehurst of such value, together with a fair rate of interest thereon if the
Court so determines, to the stockholders entitled to receive the same.
Stockholders considering seeking appraisal should be aware that the fair value
of their shares of Hazlehurst Common Stock as determined under Section 262 could
be more than, the same as or less than the consideration they would receive
pursuant to the Merger if they did not seek appraisal of their shares.

          In determining fair value, the court is to take into account all
relevant factors.  The Delaware Supreme Court has stated that "proof of value by
any techniques or methods which are generally considered acceptable in the
financial community and otherwise admissible in court" should be considered in
an appraisal proceeding and that "fair price obviously requires consideration of
all relevant factors involving the value of a company."  The Delaware Supreme
Court has stated that, in making such determination of fair value, the court
must consider market value, asset value, dividends, earnings prospects, the
nature of the enterprise and any other facts which could be ascertained as of
the date of the merger which cast light on future prospects of the merged
corporation.  Section 262 provides that fair value is to be "exclusive of any
element of value arising from the accomplishment or expectation of the merger."
The Delaware Supreme Court has also held that "elements of future value,
including the nature of the enterprise, which are known or susceptible of proof
as of the date of the merger and not the product of speculation, may be
considered."

          The cost of the appraisal proceeding may be determined by the Delaware
court and taxed against the parties as the court deems equitable in the
circumstances.  Upon application of a dissenting stockholder, the court may
order that all or a portion of the expenses incurred by any dissenting
stockholder in connection with the appraisal proceeding, including, without
limitation, reasonable attorneys' fees and the fees and expenses of experts, be
charged pro rata against the value of all shares of Hazlehurst Common Stock
entitled to appraisal.

          Any holder of Hazlehurst Common Stock who has duly demanded appraisal
in compliance with Section 262 and has not subsequently withdrawn such demand
will not, after the Effective Date, be entitled to vote for any purpose the
shares of Hazlehurst Common Stock subject to such demand or to receive payment
of dividends or other distributions on such shares.

          NTC is not obligated to proceed with the Merger if more than 10% of
the holders of Hazlehurst Common Stock seek to exercise appraisal rights under
Section 262 of the DGCL.  See "THE MERGER--Conditions to the Merger;
Termination."


                        COMPARISON OF STOCKHOLDER RIGHTS

          Both NTC and Hazlehurst are incorporated under the laws of the State
of Delaware and, accordingly, the rights of stockholders of NTC and Hazlehurst
are governed by the DGCL.  The rights of the stockholders of NTC and Hazlehurst
also are governed by their respective Certificates of Incorporation and Bylaws.
Upon consummation of the Merger, Hazlehurst stockholders will become NTC
stockholders and, as such, their rights will be governed by NTC's

                                      28
<PAGE>
 
Restated Certificate of Incorporation (the "NTC Certificate of Incorporation"),
and Bylaws (the "NTC Bylaws").  The following is a summary of the material
differences between the rights of holders of Hazlehurst Common Stock and holders
of NTC Common Stock.  This summary is qualified in its entirety by reference to
the full text of such documents, copies of which are incorporated by reference
in this Proxy Statement-Prospectus.

CAPITAL STOCK
    
          NTC.  The NTC Certificate of Incorporation authorizes the issuance of
140,000,000 shares of NTC Common Stock, of which 53,337,983 were 
outstanding as of February 28, 1994, and 10,000,000 shares of preferred stock
(the "NTC Preferred Stock"), of which 51,200 shares were outstanding as of
February 28, 1994. The NTC Board of Directors is authorized by the NTC
Certificate of Incorporation to issue, from time to time, one or more series of
NTC Preferred Stock having such rights and preferences as the Board may
designate. The series of NTC Preferred Stock currently outstanding have rights
superior to the NTC Common Stock with respect to dividends and distributions
upon liquidation. 

          Hazlehurst. The Hazlehurst Certificate of Incorporation authorizes the
issuance of 19,500 shares of Hazlehurst Voting Stock, of which 16,250 were
outstanding as of February 28, 1994 and 150,000 shares of Hazlehurst Nonvoting
Stock, of which 85,451 were outstanding as of February 28, 1994. In all respects
other than voting rights (discussed below), the rights of the Hazlehurst Voting
Stock and the Hazlehurst Nonvoting Stock are identical.     

VOTING RIGHTS OF CAPITAL STOCK

          DGCL.  Under the DGCL, each stockholder is entitled to one vote for
each share of stock held by such stockholder, unless the certificate of
incorporation provides otherwise.  A corporation may designate in its
certificate of incorporation the number of votes necessary to transact any
business.

          Even shares that are not granted any voting rights under the
certificate of incorporation have voting rights under the DGCL in some
circumstances: holders of the outstanding shares of a class of stock, whether or
not entitled to vote under the certificate of incorporation, are entitled to
vote as a class on a proposed amendment, if the amendment would (i) increase or
decrease the par value of shares in the class, or (ii) alter the powers,
preferences, or rights of a class adversely.

          Similarly, holders of the outstanding shares of a class of stock,
whether or not entitled to vote under the certificate of incorporation, are
entitled to vote as a class on a proposed amendment that would increase or
decrease the aggregate number of authorized shares in the class of such holders,
unless the certificate of incorporation provides that such an increase or
decrease may be approved by a majority of the outstanding shares that have
general voting rights under the certificate of incorporation.  As will be
described below, both the NTC Certificate of Incorporation and the Hazlehurst
Certificate of Incorporation do provide that only voting shares need approve
amendments that would increase or decrease the aggregate number of authorized
shares of stock in any class.

                                      29
<PAGE>
 
          The DGCL does not require that the business and affairs of the
corporation be managed by the board of directors.  Thus, it is permissible for
stockholders to have direct control over management of the corporation.

          NTC.  The NTC Certificate of Incorporation provides that holders of
NTC Common Stock are entitled to one vote per share on all matters voted upon by
stockholders.  In addition, holders of NTC Common Stock have cumulative voting
rights in the election of directors.  Accordingly, each stockholder is entitled
to as many votes as shall equal the number of his shares of NTC Common Stock
multiplied by the number of directors to be elected.  Provision for cumulative
voting has the effect of allowing a relatively smaller number of shares to have
the power to elect a single director.

          The NTC Certificate of Incorporation provides that holders of NTC
Preferred Stock have voting rights only in the following circumstances:

     (i) the holders of 66 2/3 % of the NTC Preferred Stock must approve as a
     class any amendment to the NTC Certificate of Incorporation that would
     adversely affect the powers, preferences, rights or privileges of the NTC
     Preferred Stock (provided that, if such an amendment would adversely affect
     only one or more, but not all, series of NTC Preferred Stock, then only the
     series so affected would be entitled to the above-described vote);

     (ii) the holders of 66 2/3 % of the NTC Preferred Stock must approve as a
     class the creation, authorization, or issuance of any shares of stock of
     NTC (or obligation or security convertible into or evidencing the right to
     purchase such shares) ranking prior to the NTC Preferred Stock as to
     dividends or upon liquidation, or any reclassification of authorized stock
     into such prior shares;

     (iii) in the event that at the time of any annual meeting of stockholders
     for the election of directors there shall exist a default in payment of a
     specified number of dividends (generally six quarterly dividends or
     dividends payable over at least 540 days), the number of directors on the
     NTC Board of Directors shall be increased by two (2), and the holders of
     NTC Preferred Stock, voting as a class and to the exclusion of the holders
     of NTC Common Stock, shall have the right to elect two directors to fill
     such vacancies to serve full terms, and such voting rights shall continue
     until there are no dividends in arrears upon the NTC Preferred Stock.

          Currently, all outstanding shares of NTC Preferred Stock rank on a
parity with one another as to dividends and upon liquidation and, accordingly,
vote together as a class in the circumstances described above.

          The NTC Certificate of Incorporation provides that an amendment to the
Certificate that increases or decreases the authorized capital stock of any
class or classes of stock may be adopted by the affirmative vote of the holders
of a majority of the outstanding shares of voting stock of NTC.

          Hazlehurst.  The Hazlehurst Certificate of Incorporation provides that
holders of Hazlehurst Voting Stock are entitled to one vote per share on all
matters upon which stockholders have the right to vote.  The Hazlehurst
Certificate of Incorporation further provides that, except

                                      30
<PAGE>
 
as otherwise required by law, holders of Hazlehurst Nonvoting Stock do not have
any voting rights.  (However, as described above, the DGCL grants voting rights
to otherwise nonvoting stock in certain situations.)  Finally, the Hazlehurst
Certificate of Incorporation provides that the number of authorized shares of
any class or classes of stock may be increased or decreased by the affirmative
vote of the holders of a majority of the shares of Hazlehurst Voting Stock,
without any requirement that such increase or decrease be approved by a class
vote on the part of any other class of stock.

          The Hazlehurst Certificate of Incorporation confers upon the holders
of Hazlehurst Voting Stock the power to establish guidelines and policies
governing the management of Hazlehurst and the powers and duties of the Board of
Directors and officers of Hazlehurst, and all such guidelines and policies so
established are binding on the Board of Directors and officers.  Holders of NTC
Common Stock have no such powers of management.

AMENDMENT OF CERTIFICATE OF INCORPORATION AND BYLAWS

          DGCL.  Under the DGCL, a certificate of incorporation may be amended
by a board resolution approved by a majority of the outstanding stock entitled
to vote, as well as a majority of the outstanding stock entitled to vote as a
class pursuant to an amendment that (i) increases or decreases the par value of
shares of the class, (ii) adversely affects the class, or (iii) increases or
decreases the number of authorized shares of the class (unless provision is made
otherwise in the certificate of incorporation), all as described above in
"Voting Rights of Capital Stock."

          The DGCL provides that the power to adopt, amend or repeal bylaws
shall be in the stockholders entitled to vote, provided, however, that any
corporation may, in its certificate of incorporation, confer upon the directors
the power to adopt, amend or repeal bylaws.  The fact that such power has been
conferred upon the directors shall not, however, divest the stockholders of the
power nor limit their power to adopt, amend or repeal bylaws.

          NTC.  The NTC Certificate of Incorporation provides that, subject to
the protective conditions and restrictions of outstanding NTC Preferred Stock,
NTC reserves the right to amend, alter, change or repeal any provision of the
Certificate of Incorporation, in the manner now or hereafter prescribed by
statute.  The protective conditions and restrictions allowing holders of NTC
Preferred Stock to vote as a class under certain circumstances, are described
above in "Voting Rights of Capital Stock."

          The NTC Certificate of Incorporation also provides that the Board of
Directors is authorized to make, alter or repeal the bylaws of NTC.

          Hazlehurst.  The Hazlehurst Certificate of Incorporation provides that
provisions of the Hazlehurst Certificate may be amended, altered or repealed,
and other provisions authorized by the laws of Delaware may be added in the
manner prescribed by the laws of Delaware.  For a discussion of provisions in
the Hazlehurst Certificate of Incorporation on increasing or decreasing the
number of authorized shares of any class or classes of stock, see "Voting Rights
of Capital Stock."

          The Hazlehurst Bylaws provide that the Bylaws may be made, altered,
amended, or repealed upon the affirmative vote or written consent of the holders
of a majority of the total number of the outstanding shares of Hazlehurst Voting
Stock, or by the Board of Directors, subject

                                      31
<PAGE>
 
to alteration, amendment or repeal by the holders of a majority of the total
number of the outstanding shares of Hazlehurst Voting Stock.

BOARD OF DIRECTORS

          DGCL.  Under the DGCL, the board of directors must consist of one or
more members, and the number of directors may be fixed by or in the manner
prescribed in the bylaws, or else the number may be fixed by the certificate of
incorporation.  In addition, under the DGCL any director may be removed either
with or without cause by the stockholders, provided that no director may be
removed without cause in the case of a corporation whose board is classified,
or, in the case of a corporation having cumulative voting; if less than the
entire board is being removed, no director may be removed without cause if the
votes cast against removal would be sufficient to elect such director if then
cumulatively voted at an election of the entire board of directors.

          NTC.  Under the NTC Bylaws, the number of directors of NTC shall be
determined from time to time by the Board of Directors of NTC, but shall not be
fewer than 5 nor more than 25.  Directors serve from the time of election until
the next annual meeting, at which time new directors are elected.

          Under the NTC Certificate of Incorporation and Bylaws, vacancies in
the Board may be filled by the remaining directors, and a director so chosen
will serve until the next annual meeting of stockholders.

          Hazlehurst.  The Hazlehurst Board of Directors, unlike the NTC Board
of Directors, must operate within management guidelines and policies that may be
established by the holders of Hazlehurst Voting Stock.  This provision has the
effect of allowing a greater degree of intervention in corporate management by
holders of Hazlehurst Voting Stock than by holders of NTC Common Stock.
However, the provision does not affect the holders of Hazlehurst Nonvoting
Stock, who have no greater management powers than do holders of NTC Common
Stock.  On the contrary, holders of Hazlehurst Nonvoting Stock will receive
voting stock of NTC in the Merger, and thus will have greater voting powers
after the Merger than before.

          The number of directors of Hazlehurst is fixed by the Board of
Directors, but shall be at least one.  Directors serve until the next annual
meeting of stockholders, at which time a new Board of Directors are elected.
There is no provision for cumulative voting in the Hazlehurst Certificate of
Incorporation.

          Under the Hazlehurst Bylaws, directors may be removed with or without
cause by holders of Hazlehurst Voting Stock, and vacancies in the Board are
filled by the holders of Hazlehurst Voting Stock.

SPECIAL MEETINGS OF STOCKHOLDERS

          Under both the NTC Bylaws and the Hazlehurst Bylaws, a special meeting
of stockholders may be called at any time by its Board of Directors, or the
Chairman of the Board, the President, or certain other officers.  In addition, a
special meeting shall be called upon the request of a specified number of shares
of voting stock outstanding which for NTC is 33 1/3% and for Hazlehurst is 51%.

                                      32
<PAGE>
 
BUSINESS COMBINATIONS

          Section 203 of the DGCL ("Section 203") restricts certain transactions
between a corporation organized under Delaware law (or its majority-owned
subsidiaries) and any person holding 15% or more of the corporation's
outstanding voting stock, together with the affiliates or associates of that
person (an "Interested Stockholder").  Section 203 prevents, for a period of
three years following the date that a person becomes an Interested Stockholder,
the following types of transactions between the corporation and the Interested
Stockholder (unless certain conditions, described below, are met):  (a) mergers
or consolidations, (b) sales, leases, exchanges or other transfers of 10% or
more of the aggregate assets of the corporation, (c) issuance or transfers by
the corporation of any stock of the corporation which would have the effect of
increasing the Interested Stockholder's proportionate share of the stock of any
class or series of the corporation, (d) any other transaction which has the
effect of increasing the proportionate share of the stock of any class or series
of the corporation which is owned by the Interested Stockholder, and (e) receipt
by the Interested Stockholder of the benefit (except proportionately as a
stockholder) of loans, advances, guarantees, pledges or other financial benefits
provided by the corporation.

          The three-year ban does not apply if either the proposed transaction
or the transaction by which the Interested Stockholder became an Interested
Stockholder is approved by the board of directors of the corporation prior to
the date the stockholder becomes an Interested Stockholder.  Additionally, an
Interested Stockholder may avoid the statutory restriction if, upon the
consummation of the transaction whereby the stockholder becomes an Interested
Stockholder, the stockholder owns at least 85% of the outstanding voting stock
of the corporation without regard to those shares owned by the corporation's
officers and directors or certain employee stock plans.  Business combinations
are also permitted within the three-year period if approved by the board of
directors and authorized at an annual or special meeting of stockholders, by the
holders of at least 66 2/3% of the outstanding voting stock not owned by the
Interested Stockholder.  In addition, any transaction is exempt from the
statutory ban if it is proposed at a time when the corporation has proposed, and
a majority of certain continuing directors of the corporation have approved, a
transaction with a party who is not an Interested Stockholder of the corporation
(or who becomes such with board approval) if the proposed transaction involves
(a) certain mergers or consolidations involving the corporation, (b) a sale or
other transfer of over 50% of the aggregate assets of the corporation, or (c) a
tender or exchange offer for 50% or more of the outstanding voting stock of the
corporation.

          A corporation may, at its option, exclude itself from the coverage of
Section 203 by amending its certificate of incorporation or bylaws by action of
its stockholders to exempt itself from coverage, provided that such bylaw or
charter amendment shall not become effective until 12 months after the time it
is adopted.  Section 203 does not apply to corporations with fewer than 2000
stockholders of record or without voting stock listed on a national securities
exchange or listed for quotation with a registered national securities
association.

          NTC.  NTC has not adopted a provision in its certificate or bylaws
excluding itself from the coverage of Section 203.

          Hazlehurst.  Since Hazlehurst has fewer than 2000 stockholders and
Hazlehurst stock is not listed on any exchange or quotation system, Section 203
does not apply to Hazlehurst.

                                      33
<PAGE>
 
          Section 203, in effect, encourages a party seeking to control a
corporation, in advance of the party becoming an Interested Stockholder, to
negotiate and reach an agreement with the board of directors as to the terms of
its proposed business combination.  Without such a prior agreement (whereby the
party is, by the terms of Section 203, exempt from the three-year ban), it could
take three years for a party who is an Interested Stockholder to complete its
proposed business combination, unless the Interested Stockholder owns 85% of the
outstanding voting stock or such proposed business combination is approved by
the requisite 66 2/3% vote, in each case as described above.  As a result of
these restrictions on business combinations with Interested Stockholders,
takeovers that might be favored by a majority of a corporation's stockholders
may be impeded or prevented.  On the other hand, the negotiation of terms of a
takeover transaction in advance is likely to result in more favorable terms for
all of the stockholders of a corporation than are likely to be offered in
takeovers initialed without advance negotiations.

PREFERRED STOCK PURCHASE RIGHTS

          NTC.  In 1989, the Board of Directors of NTC declared a dividend
distribution of one Preferred Stock Purchase Right (a "Right") on each
outstanding share of NTC's Common Stock to the stockholders of record on October
31, 1989.  Initially, each Right entitled stockholders to purchase from NTC one
one-hundredth of a share of a newly authorized Junior Preferred Stock at an
exercise price of $250, subject to adjustment.  As a result of the two-for-one
stock split on May 1, 1990 and a three-for-two stock split on December 9, 1992,
each Right will be exercisable for one-third of one-hundredth of a share (a
"Unit") of Junior Preferred Stock at an exercise price of $83.33 per Unit.  The
description and terms of the Rights are set forth in a Rights Agreement, dated
as of October 17, 1989, between NTC and Harris Trust and Savings Bank, as Rights
Agent (the "Rights Agreement"), which is incorporated as an exhibit to the
Registration Statement of which this Prospectus is a part.  The following
summary of the Rights Agreement is subject to, and qualified in its entirety by,
the Rights Agreement.
                      
          The Rights currently attach to all NTC Common Stock certificates
representing shares outstanding, and no separate Rights certificates have been
distributed.  The Rights will separate from the NTC Common Stock and a
"Distribution Date" will occur upon the earlier of (i) 20 days following a
public announcement that a person or group of affiliated or associated persons
(an "Acquiring Person") has acquired, or obtained the right to acquire,
beneficial ownership of 15% or more of the outstanding shares of NTC Common
Stock (the "Stock Acquisition Date"), or (ii) 20 days following the commencement
of, or first public announcement of the intent of any person to commence, a
tender offer or exchange offer that would result in a person or group
beneficially owning 25% or more of such outstanding shares of NTC Common Stock.

          Until the Distribution Date, (i) the Rights will be evidenced by the
NTC Common Stock certificates (including NTC Common Stock certificates issued
upon conversion of certain NTC Preferred Stock (the "NTC Convertible Preferred
Stock") into NTC Common Stock) and will be transferred with and only with such
NTC Common Stock certificates, (ii) new NTC Common Stock certificates (including
NTC Common Stock certificates issued upon conversion of the NTC Convertible
Preferred Stock) will contain a notation incorporating the Rights Agreement by
reference and (iii) the surrender for transfer of any certificates for NTC
Common Stock outstanding will also constitute the transfer of the Rights
associated with the NTC Common Stock represented by such certificate.

                                      34
<PAGE>
 
          The Rights are not exercisable until after the Distribution Date and
will expire at the close of business on October 31, 1999, unless earlier
redeemed.

          As soon as practicable after the Distribution Date, rights
certificates will be mailed to holders of record of the NTC Common Stock as of
the close of business on the Distribution Date and, thereafter, the separate
Rights certificates alone will represent the Rights.  All shares of NTC Common
Stock issued prior to the Distribution Date (including shares of NTC Common
Stock issued upon conversion of NTC Convertible Preferred Stock) will be issued
with Rights.

    
          In the event that (i) an Acquiring Person shall merge into or
otherwise combine with NTC, NTC shall be the continuing or surviving
corporation, and the Common Stock of NTC shall remain outstanding and shall not
be changed or exchanged, (ii) an Acquiring Person shall engage in certain self-
dealing transactions with NTC, (iii) any reclassification, recapitalization,
merger or consolidation of NTC with any of its subsidiaries, or any other
transaction or series of transactions with NTC or its subsidiaries occurs that
would have the effect of increasing by more than 1% the proportionate share of
the outstanding securities of NTC or any of its subsidiaries owned by the
Acquiring Person or its affiliates or associates, or (iv) a person becomes the
beneficial owner of 25% or more of the then outstanding shares of Common Stock
(except pursuant to an offer for all outstanding shares of Common Stock which at
least a majority of the members of the Board of Directors who are not officers
of NTC and who are not representatives, nominees, affiliates or associates of an
Acquiring Person determines to be fair to and otherwise in the best interests of
NTC and its stockholders), then each holder of a Right will thereafter have the
right to receive, upon exercise, Common Stock (or, in certain circumstances,
cash, property or other securities of NTC) having a current market value equal
to two times the exercise price of the Right. Notwithstanding any of the
foregoing, following the occurrence of any of the events set forth in this
paragraph, all Rights that are, or (under certain circumstances specified in the
Rights Agreement) were, beneficially owned by any Acquiring Person will be null
and void. However, the Rights are not exercisable following the occurrence of
any of the events set forth above until such time as the Rights are no longer
redeemable by NTC as set forth below.     

          In the event that, at any time following the Stock Acquisition Date,
(i) NTC is acquired in a merger or other business combination transaction in
which NTC is not the surviving corporation (other than a merger which follows an
offer described in subparagraph (iv) of the preceding paragraph), (ii) any
person shall consolidate with, or merge with or into, NTC, and NTC shall be the
surviving Corporation (other than a merger which follows an offer described in
subparagraph (iv) of the preceding paragraph) and, in connection therewith, all
or part of the outstanding shares of Common Stock shall be changed into or
exchanged for stock or other securities of any other person or cash or any other
property, or (iii) more than 50% of NTC's assets or earning power is sold or
transferred, each holder of a Right (except Rights which previously have been
voided as set forth above) shall thereafter have the right to receive, upon
exercise, common stock of the acquiring company having a current market value
equal to two times the exercise price of the Right.  The events set forth in
this paragraph and in the preceding paragraph are referred to as the "Triggering
Events."

          The purchase price payable, and the number of Units of the Junior
Preferred Stock or other securities or property issuable, upon exercise of the
Rights are subject to adjustment from time to time to prevent dilution in the
event of (i) a stock dividend on, or a subdivision, combination or consolidation
of, the Junior Preferred Stock or the NTC Common Stock, or (ii) a
reclassification or recapitalization of the Junior Preferred Stock or the NTC
Common Stock into

                                      35
<PAGE>
 
another class of capital stock (including any such reclassification or
recapitalization in connection with a consolidation or merger in which NTC is
the continuing or surviving corporation).

          No adjustment in the purchase price will be required until cumulative
adjustments amount to at least 1% of the purchase price.  No fractional Units
will be issued and, in lieu thereof, an adjustment in cash will be made based on
the market price of the Junior Preferred Stock on the last trading date prior to
the date of exercise.
                                     
          In general, at any time until 20 days following the Stock Acquisition
Date, NTC may redeem the Rights in whole, but not in part, at a price of $.01
per Right.  After the redemption period has expires, NTC's right of redemption
may be reinstated if an Acquiring Person reduces his beneficial ownership to 10%
or less of the outstanding shares of NTC Common Stock in a transaction or series
of transactions not involving NTC.  Immediately upon the action of the Board of
Directors ordering redemption of the Rights, the Rights will terminate and the
only right of the holders of Rights will be to receive the $.01 redemption
price.

          Until a Right is exercised, the holder thereof, as such, will have no
rights as a stockholder of NTC, including, without limitation, the right to vote
or to receive dividends.

          Except as provided below, any of the provisions of the Rights
Agreement may be amended by the Board of Directors of NTC prior to the
Distribution Date.  After the Distribution Date, the provisions of the Rights
Agreement may be amended by the Board in order to cure any ambiguity, to make
changes which do not adversely affect the interests of holders of Rights or to
shorten or lengthen any time period under the Rights Agreement; provided,
however, that no amendment to adjust the time period governing redemption shall
be made at such time as the Rights are not redeemable.  Either before or after
the Distribution Date, the provisions of the Agreement relating to the principal
economic terms of the Rights may only be amended in certain limited
circumstances.

          In connection with the Rights Agreement, 350,000 shares of Junior
Preferred Stock have been authorized and reserved.  No shares of the Junior
Preferred Stock are outstanding.  The Junior Preferred Stock ranks senior to the
Common Stock and is junior to any other series of NTC's preferred stock with
respect to payment of dividends and distributions of assets upon liquidation.

          The Rights have certain anti-takeover effects.  The Rights will cause
substantial dilution to a person or group that attempts to acquire NTC in a
manner defined as a Triggering Event unless the offer is conditioned on a
substantial number of Rights being acquired.  The Rights, however, should not
affect any prospective offeror willing to make an offer for all outstanding
shares of Common Stock and other voting securities at a fair price and otherwise
in the best interests of NTC and its stockholders as determined by the Board of
Directors or affect any prospective offeror willing to negotiate with the Board
of Directors.  The Rights should not interfere with any merger or other business
combination approved by the Board of Directors since the Board of Directors may,
at its option, at any time prior to the close of business on the twentieth day
after the Stock Acquisition Date, redeem all, but not less than all, of the then
outstanding Rights at a redemption price of $.01 per Right.

          Hazlehurst.  Hazlehurst has not adopted any rights or similar plan.

                                      36
<PAGE>
 
TAXATION

     Although the Merger will be a tax-free reorganization pursuant to Section
368(a) of the Code (see "THE MERGER--Certain Federal Income Tax Consequences"),
taxation of Hazlehurst and its stockholders will change as a result of the
transaction.  Prior to the Merger, Hazlehurst considered itself taxable as an S
corporation, as defined in Section 1361 of the Code.  Accordingly, as a general
matter, income of Hazlehurst has not been subject to tax, but instead its
stockholders have reported Hazlehurst's income, whether or not distributed, on
their own tax returns and paid tax with respect thereto.  Generally, dividends
and other distributions of Hazlehurst have not been subject to tax but rather
effected a reduction in the basis of a stockholder's shares.  As a result of the
Merger, Hazlehurst will no longer be an S corporation, and the NTC stock
received will not be stock of an S corporation.  As holders of shares of stock
in a regular taxable corporation, subject to Subchapter C of the Code,
Hazlehurst stockholders following the Merger will only be subject to tax on
dividends actually received, and NTC will pay tax on all of its corporate
income.  Accordingly, NTC corporate income distributed to stockholders is
subject to two taxes, while income of Hazlehurst prior to the Merger was subject
to only one tax.
                                             

                             BUSINESS OF HAZLEHURST

GENERAL

          Hazlehurst is an employee benefits firm providing a family of services
designed exclusively for corporate retirement programs.  Hazlehurst provides for
its clients recordkeeping and administration services, actuarial and consulting
services, and software and systems products and services.  Hazlehurst's
corporate headquarters are located in Atlanta, Georgia and it has an office in
Seattle, Washington.  Hazlehurst commenced business in 1971 as a Georgia
corporation.  So that the company could operate under Delaware corporate law,
the Georgia corporation was merged into the current Hazlehurst, a Delaware
corporation, in 1976.  The Delaware corporation had been formed solely for the
purpose of that merger and had no other business at the time of that merger.

COMPANY BUSINESS STRATEGY

          Hazlehurst has adopted a focused business strategy of providing
services for retirement plans to medium sized and larger (Fortune 1000)
corporations.  Hazlehurst targets companies with defined benefit plans having
500 or more participants and companies with defined contribution plans having
1,000 or more participants.  Hazlehurst's primary services are briefly described
below.

          Recordkeeping and Administration.  Hazlehurst currently offers a
comprehensive set of recordkeeping and other administrative services with
respect to the defined contribution plans of its clients, including maintenance
of basic plan records, administration of enrollments, allocations, loans and
distributions, participants statements and discrimination testing.  Hazlehurst
currently provides recordkeeping services to approximately one hundred twenty
401(k) plans with a total of approximately 450,000 participants.  These services
are made possible in part by Hazlehurst's state-of-the-art computer
recordkeeping system which is capable of handling plans with as many as 75,000
participants, and its automated voice response systems, which enable
participants to conduct transactions via a toll-free telephone number. 
Hazlehurst estimates that its recordkeeping and

                                       37

<PAGE>
 
administrative services represent from time to time approximately 60% of total
firm revenues from ongoing operations.

          Actuarial and Consulting Services.  Hazlehurst provides comprehensive
actuarial services for defined benefit pension plans (qualified and
nonqualified) and retiree medical plans.  The firm's actuarial capabilities
include valuations to meet requirements of the Internal Revenue Service and the
Pension Benefit Guaranty Corporation, as well as requirements under financial
accounting standards.  Hazlehurst currently employs approximately 16 actuaries
who are enrolled actuaries with the Joint Board for the Enrollment of Actuaries.
In addition to actuarial services, Hazlehurst provides a variety of consulting
services to its clients including retirement plan design, annual discrimination
testing and employee communications and education.
                                       
Hazlehurst's consulting services are provided by approximately 13 consultants,
and Hazlehurst estimates that actuarial and consulting services combined
represent from time to time approximately 30% of the firm's revenues from
ongoing operations.

          Software and Systems Services.  Hazlehurst develops and builds
software primarily for its own internal use.  Hazlehurst also licenses certain
software to its clients for use in administering their plans.  Systems licensed
to clients include defined benefit pension administration systems, DC on-line
(which provides on-line access to employee data for defined contribution plans)
and Section 415 systems (which track the limits on the amounts contributed to,
and paid from, qualified pension plans).  Hazlehurst provides maintenance and
support to licensees of its software.  Hazlehurst estimates that software
systems and service represent from time to time less than 10% of the firm's
revenues from ongoing operations.

          DC OPTIMUM.  DC OPTIMUM is a service mark used by Hazlehurst to refer
to its integrated approach to delivering defined contribution plan services.
Hazlehurst is positioned to provide to its DC OPTIMUM clients diversified
investment management, recordkeeping services, consulting and compliance
services, trust services and employee education and communication.  Through
relationships developed with nationally recognized mutual fund managers, the DC
OPTIMUM program offers to clients opportunities to invest in over 100 mutual
funds.  Hazlehurst is precluded from registering the DC OPTIMUM service mark
because it is similar to a mark already registered and used by another entity.
Hazlehurst has agreed to stop using this mark by December 31, 1995, but it
currently intends to offer this package of services thereafter under a different
name.

MARKET ENVIRONMENT

          Hazlehurst believes that the employee benefit services industry is
currently in a state of major change.  Hazlehurst's experience shows that the
defined contribution industry is experiencing a significant amount of upheaval.
Plan assets are growing significantly and in some cases equal or exceed the
total capitalization of the plan sponsor.  Participants are demanding better and
more responsive service, as well as numerous quality investment options with
strong track records.  Providing these features increases plan costs, and many
plan sponsors are shifting the burden of asset allocation and cost of
administration to the participant.  As clients become more focused on plan
costs, Hazlehurst and its competitors will need to provide quality, value-added
services at reasonable rates.  Hazlehurst believes that the current trend by
plan sponsors to review their benefit plan service providers with a focus on
investment diversity, participant service,

                                       38

<PAGE>
 
customization, flexibility and cost will continue for some time and may result
in consolidation of benefit consulting firms.

EMPLOYEES

          As of September 30, 1993, Hazlehurst had approximately 145 employees,
110 of whom work out of the Atlanta office and the remainder out of the Seattle
office.  None of Hazlehurst's employees is covered by a collective bargaining
agreement.  Hazlehurst considers its relations with its employees to be good.

PROPERTIES

          Hazlehurst's corporate headquarters in Atlanta, Georgia are housed in
approximately 31,000 square feet of office space in The Terraces office
building, located at 400 Perimeter Center Terrace.  Hazlehurst's lease for this
space expires in December 1995, and it currently pays annual rent therefor of
approximately $620,000.  Hazlehurst's office in Seattle, Washington is housed in
approximately 10,000 square feet of office space at 19119 Northcreek Parkway.
Hazlehurst's lease for the Seattle space expires in December 1996, and
Hazlehurst currently pays annual rent therefor of approximately $180,000. In
addition to this office space, Hazlehurst leases offsite storage space in both
Atlanta and Seattle.  Hazlehurst does not own any real property.  Hazlehurst
believes that its properties generally are in good condition and adequate for
its requirements.

LEGAL PROCEEDINGS

          Hazlehurst is involved from time to time in certain legal proceedings
arising in the normal course of its business.  Management believes that the
outcome of these matters will not have a material adverse effect on Hazlehurst.
    
     

                                       39

<PAGE>
 
    
    

                                LEGAL OPINIONS

          The legality of the NTC Common Stock to be issued pursuant to the
Merger has been passed upon for NTC by Schiff Hardin & Waite, 7200 Sears Tower,
Chicago, Illinois 60606.

          Alston & Bird, counsel for Hazlehurst, has delivered an opinion to 
Hazlehurst and the Principal Stockholders concerning certain federal income tax 
consequences of the Merger. See "THE MERGER--Certain Federal Income Tax 
Consequences."

                                    EXPERTS
    
          The consolidated financial statements of NTC incorporated into this
Proxy Statement-Prospectus by reference to NTC's Annual Report on Form 10-K for
the year ended December 31, 1993 have been audited by Arthur Andersen & Co.,
independent accountants, as indicated in their reports with respect thereto, and
are incorporated by reference in this Proxy Statement-Prospectus in reliance
upon the authority of said firm as experts in accounting and auditing in giving
said reports.

          The financial statements of Hazlehurst & Associates, Inc. as of 
December 31, 1993 and for the year then ended appearing in this Proxy 
Statement-Prospectus have been so included in reliance on the report of Price 
Waterhouse, independent accountants, given on the authority of said firm as 
experts in accounting and auditing.      

                                       40

<PAGE>
 
                  INDEX TO FINANCIAL STATEMENTS OF HAZLEHURST
<TABLE>
<CAPTION>
 
 
                                                                          Page
                                                                          ----
<S>                                                                       <C>
Report of Independent Accountants........................................  F-2
Balance Sheets as of December 31, 1993 (audited) and 1992 (unaudited)....  F-3
Statements of Income for each of the years ended December 31, 1993 
   (audited), 1992 (unaudited) and 1991 (unaudited)......................  F-4
Statements of Changes in Stockholders' Equity for each of the years ended 
   December 31, 1993 (audited), 1992 (unaudited) and 1991 (unaudited)....  F-5
Statements of Cash Flows for each of the years ended December 31, 1993 
   (audited), 1992 (unaudited) and 1991 (unaudited)......................  F-6
Notes to Financial Statements............................................  F-7
Management's Discussion and Analysis of Financial Condition and Results
   of Operations.........................................................  F-10
 
</TABLE>

                                      F-1
<PAGE>
       
                       REPORT OF INDEPENDENT ACCOUNTANTS



To the Board of Directors and Stockholders of
Hazlehurst & Associates, Inc.


In our opinion, the accompanying balance sheets and the related statements of
income, of changes in stockholders' equity and of cash flows present fairly, in
all material respects, the financial position of Hazlehurst & Associates, Inc.
at December 31, 1993, and the results of its operations and its cash flows for
the year in conformity with generally accepted accounting principles.  These
financial statements are the responsibility of the Company's management; our
responsibility is to express an opinion on these financial statements based on
our audit.  We conducted our audit of these statements in accordance with
generally accepted auditing standards which require that we plan and perform the
audit to obtain reasonable assurance about whether the financial statements are
free of material misstatement.  An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements,
assessing the accounting principles used and significant estimates made by
management, and evaluating the overall financial statement presentation.  We
believe that our audit provides a reasonable basis for the opinion expressed
above.



PRICE WATERHOUSE
Atlanta, Georgia
February 11, 1994

                                      F-2
<PAGE>
 
                         HAZLEHURST & ASSOCIATES, INC.
                                 BALANCE SHEETS
                                 --------------
<TABLE>
<CAPTION>
                                                               December 31,
                                                       -----------------------------
                                                       
                                                            1992           1993
                                                       -------------  --------------
                                                        (unaudited)
<S>                                                    <C>            <C>
                      Assets                          
                      ------                          
Current assets:                                       
 Cash and cash equivalents                               $  837,458      $  661,311
 Marketable securities                                    4,754,129       5,052,829
 Accounts receivable, net of allowance for            
  doubtful accounts of $11,919 in                     
  1992 and $21,611 in 1993                                2,251,501       2,419,614
 Other assets                                               133,962         120,953
                                                         ----------      ----------
    Total current assets                                  7,977,050       8,254,707
Property and equipment, net (Note 3)                      1,389,382       1,271,410
Other assets                                                    800           7,500
                                                         ----------      ----------
                                                         $9,367,232      $9,533,617
                                                         ==========      ==========
                                                      
      Liabilities and Stockholders' Equity            
      ------------------------------------            
Current liabilities:                                  
 Accounts payable                                        $  152,956      $  250,113
 Accrued compensation and employee benefits               1,720,394       2,002,227
 Other accured liabilities                                   48,752          56,583                                  
 Dividends payable                                          728,169         880,000
                                                         ----------      ----------
    Total current liabilities                             2,650,271       3,188,923
Deferred rent                                               195,852          97,926
Deferred compensation                                       322,513         283,651
                                                         ----------      ----------
                                                          3,168,636       3,570,500
                                                         ----------      ----------
Redeemable common stock                                   6,042,188       5,878,919
                                                         ----------      ----------
Stockholders' equity (Note 2):                        
 Class A Common Stock, $.0125 par value,              
  19,500 shares authorized; 18,600 issued in 1992 
  and 1993; 16,350 and 16,250 outstanding in 1992 
  and 1993, respectively                                        233             233 
                                                      
                                                      
 Class B Common Stock, $.0125 par value,              
  150,000 shares authorized; 86,160                   
  issued in 1992 and 1993, 85,351 and 85,451                                  
  outstanding in 1992 and 1993, respectively                  1,077           1,077
                                                      
Capital in excess of par value                              609,405         609,405
Retained earnings                                         5,673,369       5,437,890
                                                         ----------      ----------
                                                          6,284,084       6,048,605
                                                      
Less - Treasury Stock - 2,250 and 2,350 shares 
       of Class A Common Stock in 1992 and 1993, 
       respectively, and 809 and 709 shares of           
       Class B Common Stock in 1992 and 1993, 
       respectively, at cost                                (85,488)        (85,488)

       Redeemable Common Stock                           (6,042,188)     (5,878,919)
Commitments (Note 6)                                              -               -
                                                         ----------      ----------
                                                         $9,367,232      $9,533,617
                                                         ==========      ==========
  The accompanying notes are an integral part of these financial statements.
</TABLE>

                                      F-3
<PAGE>
 
                         HAZLEHURST & ASSOCIATES, INC.
    
                           STATEMENTS OF INCOME     
                   ------------------------------------------
<TABLE>
<CAPTION>
 
                                                For the years ended December 31,
                                          --------------------------------------------
                                              1991           1992            1993
                                          -------------  -------------  --------------
                                           (unaudited)    (unaudited)    
<S>                                       <C>             <C>            <C>
Revenues:                               
 Actuarial and other services              $15,541,337    $15,177,458     $14,487,053
 Other, principally interest                   297,543        295,484         369,962
                                           -----------    -----------     -----------
                                            15,838,880     15,472,942      14,857,015
                                           -----------    -----------     -----------

Operating Expenses:                     
 Salaries and other compensation             9,534,646      9,120,964       8,942,911
 Payroll taxes and employee benefits         1,546,388      1,639,719       1,629,324
 Equipment and office rentals                  693,961        792,931         780,706
 Depreciation and amortization                 441,437        530,888         536,718
 Maintenance                                   265,459        316,174         269,642
 Office supplies                               311,421        273,845         189,597
 Interest                                       11,017            321              --
 Travel and entertainment                      238,222        270,911         194,291
 Taxes and licenses                            117,153         98,436         116,975
 Insurance                                      90,543         91,423          91,674
 Telephone                                     115,144        136,667          75,324
 Other operating expenses                      517,852        602,613         564,899
                                           -----------    -----------     -----------
                                            13,883,243     13,874,892      13,392,061
                                           -----------    -----------     -----------
                                        
Net income                                 $ 1,955,637    $ 1,598,050     $ 1,464,954
                                           ===========    ===========     ===========
 
</TABLE>

See notes to financial statements.

                                      F-4
<PAGE>
 
                         HAZLEHURST & ASSOCIATES, INC.
                 STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY
             FOR THE YEARS ENDED DECEMBER 31, 1991, 1992 AND 1993
<TABLE>
<CAPTION> 
                                Class A             Class B
                             Common Stock        Common Stock      Capital in                              Redeemable
                           ----------------    ----------------     Excess of    Retained     Treasury       Common
                           Shares    Amount    Shares    Amount     Par Value    Earnings       Stock        Stock          Total  
<S>                        <C>       <C>       <C>       <C>       <C>          <C>          <C>          <C>            <C> 
Balance, December 31,
1990 (unaudited)           18,600     $233     85,214    $1,065     $518,242    $5,263,363   $ (28,744)   $(5,451,777)   $  302,282

Net Income                                                                       1,955,637                                1,955,637

Distributions to 
Stockholders                                                                    (1,560,103)                              (1,560,103)

Repurchase of Common 
Stock                                                                                           (4,869)                      (4,869)

Purchase of Stock by
Employees                                         946        12       77,342                    13,340                       90,694

Net Change in Redeemable
Common Stock                                                                                                 (552,458)     (552,458)
                           ------   -------    ------    ------     --------    ----------   ---------    -----------    ----------
Balance, December 31, 
1991 (unaudited)           18,600       233    86,160     1,077      595,584     5,658,897     (20,273)    (6,004,235)      231,283

Net Income                                                                       1,598,050                                1,598,050

Distributions to 
Stockholders                                                                    (1,583,578)                              (1,583,578)

Repurchase of Common 
Stock                                                                                         (113,404)                    (113,404)

Purchase of Stock by 
Employees                                                             13,821                    48,189                       62,010

Net Change in Redeemable 
Common Stock                                                                                                  (37,953)      (37,953)
                           ------   -------    ------    ------     --------    ----------   ---------    -----------    ----------
Balance, December 31, 
1992 (unaudited)           18,600       233    86,160     1,077      609,405     5,673,369     (85,488)    (6,042,188)      156,408

Net Income                                                                       1,464,954                                1,464,954

Distributions to 
Stockholders                                                                    (1,700,433)                              (1,700,433)

Net Change in Redeemable 
Common Stock                                                                                                  163,269       163,269
                           ------   -------    ------    ------     --------    ----------   ---------    -----------    ----------
Balance, December 31, 
1993                       18,600      $233    86,160    $1,077     $609,405    $5,437,890   $ (85,488)   $(5,878,919)   $   84,198
                           ======   =======    ======    ======     ========    ==========   =========    ===========    ==========
</TABLE>


  The accompanying notes are an integral part of these financial statements.

                                      F-5


       

<PAGE>
 
                         HAZLEHURST & ASSOCIATES, INC.

                            STATEMENTS OF CASH FLOWS
<TABLE>
<CAPTION>
                                                                    For the Years Ended December 31,
                                                              --------------------------------------------
                                                                  1991           1992            1993
                                                              -------------  -------------  --------------
                                                               (unaudited)    (unaudited)
<S>                                                           <C>            <C>             <C>
Cash flows from operating activities:                        
 Net income                                                    $ 1,955,637    $ 1,598,050     $ 1,464,954
                                                               -----------    -----------     -----------
 Adjustments to reconcile net income to net cash provided    
  by operating activities:                                   
     Depreciation and amortization                                 441,437        530,888         536,718
     Gain on sale of fixed assets                                   (1,201)          (125)           (402)
     (Increase) decrease in accounts receivable                   (951,692)       523,688        (168,113)
     Decrease in other current assets                              114,462          3,853          13,009
     Decrease (increase) in other assets                            13,120         15,602          (6,700)
     Increase (decrease) in accounts payable,                
       accrued compensation and other accrued                
       liabilities                                                 209,339       (637,637)        386,821
     Decrease in deferred rent                                     (89,302)      (106,086)        (97,926)
     Increase (decrease) in deferred compensation                   22,867        109,905         (38,862)
                                                               -----------    -----------     -----------
       Total adjustments                                          (240,970)       440,088         624,545
                                                               -----------    -----------     -----------
       Net cash provided by operating activities                 1,714,667      2,038,138       2,089,499
                                                               -----------    -----------     -----------
                                                             
Cash flows from investing activities:                        
 Purchases of fixed assets                                        (695,780)      (549,823)       (418,353)
 Proceeds from sale of property and equipment                        1,440            125              --
 Purchases of marketable securities                             (5,125,534)    (4,374,690)     (4,114,130)
 Sales of marketable securities                                  4,545,959      4,708,716       3,815,430
                                                               -----------    -----------     -----------
     Net cash used for investing activities                     (1,273,915)      (215,672)       (717,053)
                                                               -----------    -----------     -----------
                                                             
Cash flows from financing activities:                        
 Sale of common stock                                               90,694         62,010              --    
 Repurchase of common stock                                         (4,869)      (113,404)             --       
 Principal payments of subordinated debentures                      (9,875)            --              --
 Distributions to stockholders                                  (1,016,339)    (1,703,179)     (1,548,593)    
                                                               -----------    -----------     -----------
     Net cash used in financing activities                        (940,389)    (1,754,573)     (1,548,593)
                                                               -----------    -----------     -----------
Net (decrease) increase in cash and cash equivalents              (499,637)        67,893        (176,147) 
Cash and cash equivalents, beginning of year                   $ 1,269,202    $   769,565         837,458   
                                                               -----------    -----------     -----------
Cash and cash equivalents, end of year                         $   769,565    $   837,458     $   661,311  
                                                               ===========    ===========     ===========
                                                             
Supplemental disclosures of cash flow information           
                                                             
 Cash paid during the year for                              
     Interest                                                  $    12,083    $       321              --
                                                               ===========    ===========     ===========
      
</TABLE>
    
The accompanying notes are an integral part of these financial statements.     

                                      F-6
<PAGE>
 
                         HAZLEHURST & ASSOCIATES, INC.
                                        
                         NOTES TO FINANCIAL STATEMENTS
    
                       DECEMBER 31, 1991, 1992 AND 1993      
                                  

1. DESCRIPTION OF THE BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

    
  Hazlehurst & Associates, Inc. ("Hazlehurst" or the "Company") is an actuarial
firm that provides consulting and administrative services for employee benefit
plans. Significant accounting policies of Hazlehurst are as follows:     

    
Revenue recognition: Revenue from services is recognized when services are
rendered.     

    
Cash and cash equivalents: Hazlehurst considers all highly liquid short-term
investments with original maturities of 90 days or less to be cash 
equivalents.     

    
Marketable securities: Hazlehurst has short-term investments in certain bond
funds which are readily marketable. The investments are carried at market value,
which approximates costs.     

Property and equipment:  Office furniture and fixtures, computer equipment and
other fixed assets are depreciated using the straight-line method over estimated
useful lives of five years.  Leasehold improvements are amortized using the
straight-line method over the life of the related lease.

    
Income taxes:  Hazlehurst has elected to be taxed as an S Corporation.  Under
the provisions of the Internal Revenue Code, an S Corporation is not subject to
federal income tax, as its taxable income or loss accrues to its stockholders.
Accordingly, no provision for income taxes has been recorded in the accompanying
financial statements.     

    
Deferred rent: Due to rent concessions and scheduled rent increases over the
lease term, rental expense recognition for accounting purposes and actual rent
paid differ. This difference is recorded as deferred rent liabilities. Rent
expense is recognized using the straight-line method over the initial term of
the lease agreement.     

    
Deferred compensation: Deferred compensation represents bonuses awarded to
employees which are payable at least one year after award.     

    
December 31, 1991 and 1992 financial statements (unaudited): The financial
statements as of and for the years ended December 31, 1991 and 1992 are
unaudited; however, in the opinion of Hazlehurst, the financial statements
include all adjustments, consisting only of normal recurring adjustments,
necessary for a fair statement of balances and results for these periods.      

2.  STOCKHOLDERS' EQUITY

    
  Hazlehurst has entered into agreements with its employees/stockholders
requiring Hazlehurst to repurchase and the employees/stockholders to sell their
Class A or Class B shares when they cease to be active employees of Hazlehurst.
Class A and Class B shares have identical characteristics and privileges except
that Class B stock is non-voting. The repurchase price is the tangible book
value per share of Hazlehurst as defined in the stockholders' agreement dated
May 15, 1980.     

    
  Hazlehurst has established incentive stock bonus plans (the "Plans") under
which certain employees of Hazlehurst receive cash bonuses and may elect to
purchase a specified number of shares of the Company's Class A and Class B
common stock. Under the Plans, the eligibility to purchase stock is determined
based on performance requirements specified by the Board of Directors.
Hazlehurst records compensation expense based on the employee's calculated cash
bonus and the issuance of common stock using tangible book value per share of
Hazlehurst's  common stock at the date the employee elects to purchase the
shares.     

                                     F-7 
<PAGE>
 
    
  At December 31, 1993, Hazlehurst had recorded $1,347,456 of bonuses payable to
employees. Management has not determined the number of shares employees will be
eligible to purchase once bonuses have been paid. As a result, the 1993 stock
purchases, which are expected to occur by March 1, 1994, have not been reflected
in the accompanying financial statements. During 1991 and 1992, Hazlehurst
allowed employees to purchase 1,098 and 856 shares, respectively, of Class B
Common Stock related to the awards.     
 
    
  Under the terms of the Plans, the employees are required to sell their shares
back to Hazlehurst upon termination of employment.  The repurchase price is
equal to 20% of the tangible book value per share of Hazlehurst if termination
occurs within one year from the date of the award, increasing by 20% each year
until the repurchase price reaches 100% of the tangible book value per share of
Hazlehurst.      

    
  During 1992, Hazlehurst repurchased 350 shares of Class A Common Stock and
1,665 shares of Class B Common Stock, originally awarded under the Plans from a
terminated employee for an average of $56 per share. During 1991, Hazlehurst
repurchased 152 shares of Class B Common Stock from a terminated employee for an
average of $32 per share.      

    
  During 1993, Hazlehurst declared cash dividends totalling $1,700,433.
Dividends of $880,000 which were accrued as of December 31, 1993 were
subsequently paid in January 1994.     

3. PROPERTY AND EQUIPMENT

  Property and equipment is summarized as follows:

<TABLE>
<CAPTION>
                                             December 31,
                                    -----------------------------
                                           1992              1993        
                                    -----------       -----------        
                                     (unaudited)                  
<S>                                 <C>               <C>                
Computer equipment                  $ 2,838,335       $ 3,153,240        
Office furniture and fixtures           897,191           911,168        
Leasehold improvements and                                        
 other                                  671,742           731,785        
                                    -----------       -----------        
                                      4,407,268         4,796,193        
Less -  Accumulated                                               
 depreciation and amortization       (3,017,886)       (3,524,783)      
                                    -----------       -----------       
                                    $ 1,389,382       $ 1,271,410       
                                    ===========       ===========       
</TABLE>


                                      F-8
<PAGE>
     
     Depreciation and amortization expense totalled approximately $441,000,
$531,000, and $537,000, respectively, for the years ended December 31, 1991,
1992 and 1993.     

    
4.  EMPLOYEE SAVINGS AND PROFIT-SHARING PLAN

     Hazlehurst has a qualified savings and profit-sharing plan which covers
substantially all employees with at least one year of service. Hazlehurst's
annual contributions to the plan, determined at the discretion of the Board of
Directors, are made to a trust fund for investment on behalf of each
participant. Contributions for the years ended December 31, 1991, 1992 and 1993
were approximately $636,000, $658,000, and $647,000, respectively.     

    
5.  RELATED PARTIES

    Hazlehurst rents certain office space from a partnership in which certain
officers and stockholders of Hazlehurst are limited partners. The lease
agreement with the partnership expires December 31, 1996. Rent payments under
the agreement were approximately $183,000 in 1992 and 1993.     

    
6.  COMMITMENTS

     Hazlehurst leases office space under agreements which expire at various
times through 1996. At December 31, 1993, future minimum lease
payments for non-cancelable leases with terms in excess of one year are
approximately as follows:     

<TABLE>
<CAPTION>
                For the year ending                        
                     December 31,                          
                -------------------                        
                <S>                             <C>        
                       1994                      $  800,000
                       1995                         725,000
                       1996                         177,000
                                                 ----------
                                                 $1,702,000
                                                 ==========  
</TABLE>

    
7.  PLAN OF MERGER AND REORGANIZATION

     On December 12, 1993, Hazlehurst entered into the "Agreement and Plan of 
Reorganization" with Northern Trust Corporation ("NTC"), Hazlehurst Merger 
Corporation, a wholly-owned subsidiary of NTC, and certain stockholders of 
Hazlehurst (collectively, the "Merger Agreement"). Among other things, the 
Merger Agreement provides that Hazlehurst will be merged into Hazlehurst Merger 
Corporation and all outstanding Hazlehurst Class A and Class B common stock will
be exchanged for NTC common stock having an aggregate market value of $22.5 
million. The merger is subject to the approval of Hazlehurst shareholders and is
expected to be completed during April 1994.     


                                      F-9
<PAGE>

              HAZLEHURST MANAGEMENT'S DISCUSSION AND ANALYSIS OF 
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS

    
YEAR ENDED DECEMBER 31, 1993 VS. DECEMBER 31, 1992

     Total revenue for the year ended December 31, 1993 decreased 3.9% to $14.9
million compared to $15.5 million for the year ended December 31, 1992. Net
income decreased 6.0% to $1.5 million compared to $1.6 million for 1992. The
reduction in revenue was due in part to increased competition, particularly from
mutual fund companies, and in part from the sale of municipal client business to
a former employee of Hazlehurst in 1992. Two initiatives during 1993 that helped
address this reduction included enhancing interactive voice response services
with the addition of participant service representatives and starting to develop
a product offering of outsourcing services. The participant services
representatives are available to provide expanded information and services over
those that are available to plan participants using the automated voice response
system, as well as to answer questions and provide investment information.
Hazlehurst's development of outsourcing services enables Hazlehurst to assume
complete, rather than partial, responsibility for the administration of a
client's total retirement program.     
 
    
          The cost of operating the two office locations, Atlanta and Seattle,
during the year ended December 31, 1993 decreased 3.6% to $13.4 million compared
to $13.9 million for 1992. General expenses decreased 9.7% to $2.8 million in
1993 from $3.1 million in 1992. Additionally, personnel related expenses
decreased 1.9% to $10.6 million in 1993 from $10.8 million in 1992. These
decreases were due to a managed effort to control personnel and general expenses
and to ongoing progress on re-engineering Hazlehurst's products and systems.    

YEAR ENDED DECEMBER 31, 1992 VS. DECEMBER 31, 1991

          Total revenues for the year ended December 31, 1992 were $15.5 million
as compared to $15.8 million in 1991. The decrease in revenues was primarily
the result of increased competition from mutual fund companies. To address the
increased competition, Hazlehurst introduced two new products.

          In January 1992, Hazlehurst began introducing its clients to a more
sophisticated computer environment. For this new environment, Hazlehurst
developed a completely new defined contribution recordkeeping system using
transaction-based processing as opposed to the previous accumulator based
approach. Expansion of the network, continued development of the recordkeeping
system and transition of existing clients to this state-of-the-art system
continued through 1993.
 
          In July 1992, Hazlehurst introduced DC OPTIMUM, which is an integrated
set of services designed to meet all of a client's 401(k) plan needs. DC
OPTIMUM combines a diversified selection of top-ranked investment management
options, state-of-the-art daily recordkeeping, reliable trust services,
increased administrative efficiency, extensive employee communications and
quality-based processes.

          The development and introduction of the state-of-the-art computer
system and the DC OPTIMUM services did not contribute significantly to revenues
in 1992 but helped position Hazlehurst for future growth.

          Total operating costs were $13.9 million in both 1992 and 1991.
Personnel-related expenditures decreased approximately $320,000 as a result of a
reduction in personnel, offset by increases in depreciation and computer
equipment expenses.

          Net income was $1.6 million for the year ended December 31, 1992 and
$2.0 million for 1991. The decrease is primarily the result of a decrease in
revenues without a corresponding decrease in costs as Hazlehurst developed new
products.

 
                                      F-10
  
<PAGE>
 

LIQUIDITY AND CAPITAL RESOURCES
    
          Hazlehurst's net cash provided by operations was $2.1 million, $2.0 
million and $1.7 million for the years ended December 31, 1993, 1992 and 1991, 
respectively. Cash flow from operations is primarily composed of net income of 
$1.5 million, $1.6 million and $2.0 million for the corresponding periods,
increased by the noncash depreciation charge.     
    
          Net cash used in investing activities was $717,000, $216,000 and 
$1,274,000 for the years ended December 31, 1993, 1992 and 1991, respectively. 
Net sales (purchases) of marketable securities were ($299,000), $334,000 and 
($580,000) for each of the three years, respectively. Hazlehurst's use of 
cash in investing activities also includes the purchase of fixed assets,
primarily computers.     
    
          Net cash used in financing activities was $1.5 million, $1.8 million
and $0.9 million for the years ended December 31, 1993, 1992 and 1991,
respectiely. Financing cash flows consist primarily of cash distributions to
stockholders.    
    
          Hazlehurst has historically financed its growth through internally
generated funds. Working capital at December 31, 1993 was approximately $5.1
million. Management believes that Hazlehurst's present working capital and
future anticipated operation cash flows will be sufficient to fund operations
for the foreseeable future.     

                                      F-11

<PAGE>
 
                                                                      APPENDIX A

                                                                  EXECUTION COPY

                     AGREEMENT AND PLAN OF REORGANIZATION

                                     AMONG

                          NORTHERN TRUST CORPORATION,

                         HAZLEHURST MERGER CORPORATION,

                         HAZLEHURST & ASSOCIATES, INC.

                                      AND

          THE PRINCIPAL STOCKHOLDERS OF HAZLEHURST & ASSOCIATES, INC.

                         DATED AS OF DECEMBER 12, 1993


<PAGE>
 
                               TABLE OF CONTENTS
                               -----------------
                                                                            PAGE
                                                                            ----
AGREEMENT AND PLAN OF REORGANIZATION.....................................      1
ARTICLE I................................................................      1
     MERGER AGREEMENT; CLOSING...........................................      1
      1.1   Merger Agreement.............................................      1
      1.2   Effective Date...............................................      2
      1.3   Determination of Number of Shares of NTC Common Stock........      2
      1.4   Closing Date.................................................      2
      1.5   Actions at Closing...........................................      2
 
ARTICLE II...............................................................      3
     REPRESENTATIONS AND WARRANTIES OF THE COMPANY AND THE PRINCIPAL
          STOCKHOLDERS...................................................      3
      2.1   Organization and Existence of the Company....................      3
      2.2   Organizational Documents; Minutes and Stock Records..........      3
      2.3   Capitalization of the Company................................      3
      2.4   Ownership of the Common Stock of the Company.................      4
      2.5   Authorization of Transactions and Agreements.................      4
      2.6   Financial Statements.........................................      4
      2.7   Undisclosed Liabilities......................................      4
      2.8   Properties and Assets........................................      5
      2.9   Insurance....................................................      5
      2.10  Litigation and Compliance with Laws..........................      5
      2.11  Significant Contracts........................................      6
      2.12  No Defaults..................................................      6
      2.13  Taxes........................................................      6
      2.14  Employee Benefit Plans.......................................      7
      2.15  Environmental Liabilities....................................      8
      2.16  No Material Adverse Changes..................................      9
      2.17  Conduct of Business in Normal Course.........................      9
      2.18  Change in Business Relationships.............................      9
      2.19  Brokers' and Finders' Fees...................................      9
      2.20  No Omissions.................................................      9
ARTICLE III 9
     REPRESENTATION AND WARRANTIES OF NTC AND MERGER CO..................      9
      3.1   Organization and Existence of NTC and Merger Co..............      9
      3.2   Capitalization...............................................     10
      3.3   Authorization of Transactions and Agreements.................     10
      3.4   SEC Filings and Financial Statements.........................     10
      3.5   Brokers' and Finders' Fees...................................     11
      3.6   No Adverse Changes; Conduct of Business in Normal Course.....     11
ARTICLE IV...............................................................     11
     ADDITIONAL AGREEMENTS...............................................     11
      4.1   Conduct of Business..........................................     11

                                      -i-
<PAGE>
 
      4.2   Access to Information.........................................    12
      4.3   Stockholders Meeting; Proxy Statement.........................    12
      4.4   Regulatory Approval...........................................    13
      4.5   Registration Statement........................................    13
      4.6   Information to be Included in Proxy Statement and Registration
              Statement...................................................    13
      4.7   Affiliate Letters.............................................    14
      4.8   Merger Co. Stockholder Approval...............................    14
      4.9   Board of Directors' Notices and Minutes.......................    14
      4.10  Best Efforts..................................................    14
      4.11  Software Licensing Agreement..................................    14
      4.12  Company Option................................................    15
      4.13  Business Relations and Publicity..............................    15
      4.14  No Conduct Inconsistent with this Agreement...................    15
      4.15  Untrue Representations and Warranties.........................    15
      4.16  Indemnification by Stockholders...............................    15
 
ARTICLE V.................................................................    16
     CONDITIONS PRECEDENT TO OBLIGATIONS OF NTC AND MERGER CO.............    16
      5.1   Representations and Warranties; Performance of Agreements.....    16
      5.2   Closing Certificate...........................................    16
      5.3   Regulatory Approvals..........................................    16
      5.4   Approval of Merger and Delivery of Merger Agreement...........    16
      5.5   Effectiveness of the Registration Statement and Approval for 
              Listing.....................................................    16
      5.6   No Litigation.................................................    16
      5.7   Audt..........................................................    17
      5.8   Opinion of Counsel............................................    17
      5.9   No Material Adverse Changes...................................    18
      5.10  Pooling of Interests Comfort Letter...........................    18
      5.11  Affiliate Letters.............................................    18
      5.12  Consents and Permissions......................................    18
      5.13  Comfort Letter................................................    19
      5.14  Employment Agreements.........................................    19
      5.15  Stock Options and Stockholders Agreement......................    19
      5.16  Indemnification by Stockholders...............................    19
      5.17  Other Documents...............................................    19
ARTICLE VI................................................................    19
     CONDITIONS PRECEDENT TO OBLIGATIONS OF THE COMPANY AND THE PRINCIPAL
          STOCKHOLDERS....................................................    19
      6.1   Representations and Warranties; Performance of Agreements.....    19
      6.2   Closing Certificate...........................................    20
      6.3   Regulatory Approvals..........................................    20
      6.4   Approval of Merger and Delivery of Merger Agreement...........    20
      6.5   Effectiveness of the Registration Statement...................    20
      6.6   No Litigation.................................................    20
      6.7   Opinion of Counsel............................................    20
      6.8   Tax Opinion...................................................    21

                                     -ii-
<PAGE>
 
      6.9   No Adverse Changes............................................    22
      6.10  Comfort Letter................................................    22
      6.11  Employment Agreements.........................................    22
      6.12  Other Documents...............................................    22
ARTICLE VII...............................................................    22
      SURVIVAL OF REPRESENTATIONS AND INDEMNITY...........................    22
      7.1   Survival of Representations...................................    22
      7.2   Indemnification...............................................    22
      7.3   Indemnification...............................................    23
ARTICLE VIII..............................................................    24
      GENERAL.............................................................    24
      8.1   Further Assurances............................................    24
      8.2   Expenses......................................................    24
      8.3   Termination...................................................    24
      8.4   Confidential Information......................................    24
      8.5   Non-Assignment................................................    25
      8.6   Notices.......................................................    25
      8.7   Specific Performance..........................................    26
      8.8   Counterparts..................................................    26
      8.9   Entire Agreement..............................................    26
      8.10  Severability..................................................    26
      8.11  Governing Law.................................................    26
 
                                     -iii-
<PAGE>
 
                      AGREEMENT AND PLAN OF REORGANIZATION


     THIS AGREEMENT AND PLAN OF REORGANIZATION (this "Agreement") is entered
into as of the 12th day of December, 1993, by and among NORTHERN TRUST
CORPORATION, a Delaware corporation ("NTC"), HAZLEHURST MERGER CORPORATION, a
Delaware corporation, the shares of which are all owned directly or indirectly
by NTC ("Merger Co."), HAZLEHURST & ASSOCIATES, INC., a Delaware corporation
(the "Company"), and those stockholders of the Company whose names appear on the
signature page hereto (collectively, the "Principal Stockholders").

     WHEREAS, this Agreement provides for the merger of Merger Co. with and into
the Company (the "Merger") and the conversion pursuant to the Merger of all
outstanding shares of common stock of the Company into shares of common stock of
NTC, all in accordance with the terms and conditions of the Merger Agreement (as
hereinafter defined); and

     WHEREAS, the Principal Stockholders and the respective Boards of Directors
of the parties hereto deem the Merger desirable and in the best interests of the
parties and their respective stockholders; and

     WHEREAS, the parties hereto desire and intend that the Merger qualify as a
reorganization in accordance with Sections 368(a)(1)(A) and 368(a)(2)(E) of the
Internal Revenue Code of 1986, as amended (the "Code");

     NOW THEREFORE, the parties hereby covenant and agree as follows:


                                   ARTICLE I
                           MERGER AGREEMENT; CLOSING

     1.1  MERGER AGREEMENT. The Company and Merger Co. each agree to authorize,
approve and execute a merger agreement, substantially in the form attached as
Exhibit A hereto (the "Merger Agreement"), in accordance with and subject to the
terms, provisions and conditions of this Agreement, pursuant to which Merger Co.
shall be merged with and into the Company, the separate corporate existence of
Merger Co. shall cease, and the Company shall be the surviving corporation.  As
set forth more fully in the Merger Agreement, pursuant to the Merger:

     (a)  the certificate of incorporation of the Company, as in effect
immediately prior to the Effective   Date, shall be, from and after the
Effective Date, the certificate of incorporation of the surviving corporation;

     (b)  the by-laws of Merger Co., as in effect immediately prior to the
Effective  Date, shall be, from and after the Effective Date, the by-laws of the
surviving corporation;

     (c)  the directors of Merger Co., immediately prior to the Effective Date,
and Mr. James G. Pope shall be, from and after the Effective Date, the directors
of the surviving corporation; and

     (d)  the officers of the Company, immediately prior to the Effective Date,
and Dennis Sain shall be, from and after the Effective Date, the officers of the
surviving corporation.


<PAGE>
 
     1.2  EFFECTIVE DATE.  The Merger shall be effective on a date, mutually
agreed upon by the parties and specified in a certificate of merger to be filed
with the Secretary of State of the State of Delaware (the "Effective Date"),
which date shall be on or after the date of filing of the properly executed
certificate of merger with the Secretary of State of the State of Delaware in
the manner provided for by the applicable laws of the State of Delaware.

     1.3  DETERMINATION OF NUMBER OF SHARES OF NTC COMMON STOCK.  Subject to
the consummation of the Merger in accordance with the terms and provisions of
this Agreement and the Merger Agreement, all validly issued and outstanding
shares of Common Stock of the Company (as hereinafter defined) on the Effective
Date shall be converted, by virtue of the Merger, into such number of shares of
common stock of NTC as shall have a market value equal to $22,500,000,
determined on the basis of the unweighted average of the last-sale prices for
the common stock of NTC, as reported by the National Association of Securities
Dealers Automated Quotations ("NASDAQ") for the twenty trading days ending on
the fifth trading day preceding the  Closing (the "Closing Date Value"), but not
more than 681,818, nor less than 468,750, unless the Company shall so elect
pursuant to Section 4.12 hereof (before giving effect to the payment of cash in
lieu of fractional shares or to any reduction in the number of shares issuable
in the Merger as a result of the exercise of appraisal rights), shares of common
stock of NTC.  On or before the Effective Date, NTC shall authorize the issuance
of and shall make available to Merger Co. a sufficient number of shares of
common stock of NTC to enable Merger Co. to deliver, if and when required, the
number of shares of common stock of NTC that the stockholders of the Company
shall be entitled to receive as provided in this Agreement and the Merger
Agreement.  As provided in the Merger Agreement, no fractional shares of common
stock of NTC shall be issued in the Merger, and cash shall be paid in lieu of
fractional shares.

     1.4  CLOSING DATE.  The consummation of the transactions contemplated by
this Agreement and the Merger Agreement shall take place at a closing (the
"Closing") to be held on a date which shall be mutually agreed upon by the
parties (the "Closing Date"), which date shall be on the last day of the month
in which all of the conditions to the Merger set forth in Sections 5.3 and 5.4
have been satisfied.  In the event that any litigation of the type contemplated
by Sections 5.6 or 6.6 is filed, NTC or the Company may postpone the Closing by
written notice until such approvals have been obtained or such motion, appeal or
litigation is resolved, but in no event shall such Closing be postponed beyond
the close of business on June 30, 1994.

     1.5  ACTIONS AT CLOSING.  At the Closing, the parties shall (i) exchange
the various documents contemplated hereby, and (ii) cause a certificate of
merger to be filed with the Secretary of State of the State of Delaware, as
provided by the statutes of the State of Delaware.  Upon verification that the
Merger has become effective as provided by the statutes of the State of
Delaware, NTC and the Company shall take all actions provided for in the Merger
Agreement for delivery of common stock of NTC in exchange for the Common Stock
of the Company.  The Closing shall take place at 10:00 o'clock a.m., local time,
on the Closing Date at the offices of Schiff Hardin & Waite, 7200 Sears Tower,
Chicago, Illinois 60606, or at such other place upon which the parties may
agree.

                                      -2-
<PAGE>
 
                                  ARTICLE II
                 REPRESENTATIONS AND WARRANTIES OF THE COMPANY
                         AND THE PRINCIPAL STOCKHOLDERS

     This Agreement is entered into by NTC and Merger Co. upon the
understanding, and the Company and the Principal Stockholders jointly and
severally, with the exception of Section 2.4 hereof which is given severally by
each Principal Stockholder as to his shares, represent and warrant, that the
following statements are true and correct on the date of this Agreement,
subject, however, to exceptions and disclosures to be made by the Company and
the Principal Stockholders in the Disclosure Schedule and any other schedules to
this Agreement to be delivered to NTC on or before January 15, 1994.  It is
acknowledged that NTC shall have the right by written notice to terminate on or
before February 15, 1994, its obligations under this Merger Agreement and all
related documents, without the requirement to enter into the Software Licensing
Agreement described in Section 4.11 hereof, in the event that the disclosures in
the Disclosure Schedule contain disclosures not already known to NTC which
constitute a material adverse change in the business, income, operations,
assets, liabilities, financial condition, or prospects of the Company or the
value of this proposed transaction to NTC.  To the best knowledge of the
Principal Stockholders, on the date of this Agreement there are no material
liabilities of the type required to be disclosed under the terms of this
Agreement that have not been previously disclosed to NTC, or disclosed, reserved
against, or accrued for in the Financial Statements (as hereinafter defined);
provided, however, that this separate representation shall lapse and be of no
further affect in the event NTC does not exercise its right to terminate based
on the Disclosure Schedule.

     2.1  ORGANIZATION AND EXISTENCE OF THE COMPANY.  The Company is a
corporation duly organized, validly existing and in good standing under the laws
of the State of Delaware, has the corporate power to own its properties and to
carry on its business as it is now being conducted, and is duly qualified and in
good standing as a foreign corporation in each jurisdiction where the location
and character of its properties and the business conducted by it require such
qualification.  The Company has no subsidiaries.

     2.2  ORGANIZATIONAL DOCUMENTS; MINUTES AND STOCK RECORDS. The Company has
furnished NTC with copies of the certificate of incorporation and the by-laws of
the Company, in each case as amended to the date hereof, and with such other
documents relating to the authority of the Company to conduct its business as
NTC has requested.  All such documents are complete and correct.  The stock
register and minute books of the Company are complete and correct in all
material respects and accurately reflect all meetings, consents, and other
actions of the organizers, incorporators, stockholders, board of directors, and
committees of the board of directors of the Company and all transactions in the
capital stock of the Company occurring since its initial organization.

     2.3  CAPITALIZATION OF THE COMPANY.  The authorized capital stock of the
Company consists of 169,500 shares of common stock, par value $0.0125 per share
(the "Common Stock of the Company"), of which 19,500 shares are designated as
Class A Common Stock, 16,350 of which are issued and outstanding, and 150,000
shares are designated as Class B Common Stock, 85,351 of which are issued and
outstanding.  The issued and outstanding shares of Common Stock of the Company
have been duly and validly authorized and issued, are fully paid and
nonassessable, and are free of preemptive rights.  Except for rights of NTC and
Merger Co. under this Agreement and the shares of Common Stock of the Company to
be issued prior to the Closing under the Company's bonus plan in an amount which
shall not cause the total issued and outstanding shares

                                      -3-
<PAGE>
 
of the Company's common stock to exceed 105,000 shares (the "Bonus Plan
Shares"), there are no options, agreements, contracts, or other rights in
existence to purchase or acquire from the Company any shares of capital stock of
the Company, whether now or hereafter authorized or issued.

     2.4  OWNERSHIP OF THE COMMON STOCK OF THE COMPANY.  Each Principal
Stockholder represents and warrants separately that he is the record and
beneficial owner of the number of shares of Common Stock of the Company set
forth opposite his name on the signature page hereto and that he holds his
shares of Common Stock of the Company free and clear of any lien, encumbrance,
mortgage, pledge, security interest, or charge of any kind and has full power
and authority to transfer those shares pursuant to this Agreement and to take
all other steps necessary to complete the Merger.

     2.5  AUTHORIZATION OF TRANSACTIONS AND AGREEMENTS.  The execution,
delivery and performance of this Agreement have been duly authorized by the
board of directors of the Company in accordance with the certificate of
incorporation and by-laws of the Company and governing Delaware law.  This
Agreement constitutes the legal, valid, and binding obligations of the Company
and the Principal Stockholders, enforceable against the Company and the
Principal Stockholders in accordance with its terms.  The Merger Agreement will
constitute the legal, valid and binding obligation of the Company, enforceable
against the Company in accordance with its terms.  Subject to such approval by
the stockholders of the Company as may be required by the laws of the State of
Delaware and the certificate of incorporation and by-laws of the Company, the
Company has the corporate power to execute, deliver and perform this Agreement
and the Merger Agreement and to consummate the transactions herein and therein
contemplated, and such execution, delivery and performance do not violate any
provisions of the certificate of incorporation or by-laws of the Company or any
agreement to which the Company is a party or by which the Company is otherwise
bound.  Except for the approval of the stockholders of the Company referred to
in Sections 5.4 and 6.4 hereof, no consent of any regulatory authority or other
person is required to be obtained by the Company in order to permit consummation
of the Merger.

     2.6  FINANCIAL STATEMENTS.  The Company has furnished NTC with true and
complete copies of the following financial statements (the "Financial
Statements"):  (a) unaudited balance sheets of the Company as at December 31,
1992 and 1991 and the related statements of income and retained earnings for the
years then ended, together with the notes thereto, and (b) an unaudited interim
balance sheet of the Company as at September 30, 1993 and related statements of
income and retained earnings for the nine-month period then ended.  Each of the
Financial Statements referred to in clauses (a) and (b) of this Section 2.6 has
been prepared in conformity with generally accepted accounting principles
applied on a consistent basis and presents fairly the financial position of the
Company at the dates shown and the results of its operations and changes in
financial position for the periods then ended.  The interim Financial Statements
of the Company as at, and for, the period ending September 30, 1993, include all
adjustments necessary for a fair presentation of the financial position of the
Company and the results of its operations for the interim period presented,
subject to normal, recurring year-end adjustments that are not material and the
omission of footnote disclosure.

     2.7  UNDISCLOSED LIABILITIES.  The Company has no liabilities, whether
accrued, absolute, contingent, or otherwise, existing or arising out of any
transaction or state of facts existing on or prior to the date hereof, except
(a) as and to the extent disclosed, reflected or reserved against in the
Financial Statements; (b) as and to the extent arising under contracts,
commitments,

                                      -4-
<PAGE>
 
transactions, or circumstances identified in the schedules provided for herein,
excluding any liabilities for breaches; (c) as and to the extent incurred in the
ordinary course of business since September 30, 1993, and (d) liabilities, not
material in the aggregate and incurred in the ordinary course of business,
which, under generally accepted accounting principles, would not be required to
be reflected on a balance sheet prepared as of the date hereof.  Any liabilities
incurred in connection with judicial, administrative or arbitration proceedings
or claims against the Company shall not be deemed to be incurred in the ordinary
course of business.

     2.8  PROPERTIES AND ASSETS.  The Schedule of Real Property sets forth a
complete and correct description of all real property owned or leased by the
Company.  The Company owns, or has a valid right to use or a leasehold interest
in, all real property used by it in the conduct of its business as such business
has been or are now being conducted.  Except as otherwise disclosed on the
Schedule of Real Property, the Company's ownership or leasehold interest in such
property is subject to no mortgage, pledge, lien, option, conditional sale
agreement, encumbrance, security interest, title exception or restriction or
claim or charge of any kind.  All material certificates, licenses and permits
required for the lawful use and occupancy of any real property by the Company
have been obtained and are in full force and effect.  The Schedule of Tangible
Personal Property which sets forth a complete and correct description of all
material personal property owned by the Company or used by the Company in the
conduct of its business.  Except as otherwise disclosed on the Schedule of
Tangible Personal Property, all of said assets are owned free and clear of any
liens, claims, encumbrances, or rights of others and all of said assets are in
good working condition, normal wear and tear excepted.  The assets reflected in
the most recent of the Financial Statements or identified in this Agreement or
in the schedules provided for herein include (a) all of the assets owned by the
Company, except for those subsequently disposed of by the Company for fair value
in the ordinary course of business, and (2) all of the assets used or intended
for use by the Company in the conduct of its business.

     2.9  INSURANCE.  The Schedule of Insurance sets forth a complete and
correct list of all policies of insurance in which the Company is named as an
insured party, which otherwise relate to or cover any assets, properties,
premises, operations or personnel of the Company or which is owned or carried by
the Company.  The Company has in full force and effect policies of insurance
issued by reputable insurance companies against loss or damage of the kinds and
in the amounts identified in the policy summaries, and all premiums and costs
with respect thereto are set forth in the Schedule of Insurance.  There has been
no notice given by any party of interest in or to any such policies claiming any
breach or violation of any provisions thereof, disclaiming or denying coverage
thereof or canceling or threatening cancellation of any such insurance
contracts.

     2.10  LITIGATION AND COMPLIANCE WITH LAWS.  The Company and its directors,
officers, and employees, in connection with their activities on behalf of the
Company, are in compliance in all material respects with all laws and
regulations of all governmental agencies and self-regulatory agencies having
jurisdiction over the business of the Company or the activities of such persons.
Except as set forth in the Schedule of Litigation, there are no claims, actions,
suits, or proceedings pending or, to the best knowledge of the Principal
Stockholders and Company, threatened or affecting the Company or any of its
officers, directors or employees (in their capacities as such), at law or in
equity, or before any federal, state, municipal, or other governmental authority
or any arbitrator or arbitration panel, whether by contract or otherwise, and
there is no decree, judgment, order or arbitration award of any kind in
existence against or restraining the Company or any of its officers, directors
or employees from taking any action of any kind in connection with the business
of the Company.

                                      -5-
<PAGE>
 
     2.11  SIGNIFICANT CONTRACTS.  The Company has furnished to NTC a Schedule
of Significant Contracts, together with true and complete copies of the
documents referred to in the Schedule, which completely and accurately describes
every contract, commitment, or arrangement (whether written or oral) of a
material nature (or that assumes materiality because of its continuing nature)
under which the Company is obligated on the date hereof, including the
following:

     (a)  All consulting arrangements, and contracts for professional, advisory,
and other services, including contracts under which the Company performs
services for others whereunder the total future payments on an annual basis are,
in each instance, more than $50,000;

     (b)  All leases of real estate or personal property, other than leases of
personal property whereunder total future rentals are, in each instance, less
than $50,000;

     (c)  All contracts, commitments and agreements for the acquisition,
development or disposition of real or personal property other than conditional
sales contracts and security agreements whereunder total future payments are, in
each instance, less than $50,000;

     (d)  All contracts relating to the employment, engagement, compensation or
termination of directors, officers, employees, or agents of the Company and all
bonus, pension, retirement, profit sharing, stock option, stock purchase, stock
appreciation, insurance or similar plans or arrangements for the benefit of any
employees, officers or directors of the Company, including all Benefit Plans as
defined in Section 2.14;

     (e)  All loans, loan commitments, letters of credit or other financial
accommodations arrangements or evidences of indebtedness, including
modifications or amendments thereof, extended to or for the benefit of the
Company;

     (f)  All union and other labor contracts; and

     (g)  All other material contracts, made other than in the usual or ordinary
course of business of the Company, to which the Company is a party or under
which the Company is obligated.

     2.12  NO DEFAULTS.  The Company has fulfilled and taken all action
reasonably necessary to date to enable it to fulfill, when due, all of its
material obligations under all contracts, commitments and arrangements to which
it is a party.  There are no defaults under any such contracts, commitments and
arrangements, and no events have occurred that, with the lapse of time or the
election of any other party, will become defaults by the Company.  No breach or
default by any other party under such contracts, commitments or arrangements has
occurred or, to the Principal Stockholders' or the Company's knowledge, is
threatened that will or could impair the ability of the Company to enforce any
of its rights thereunder in any material respect.

     2.13  TAXES.  All federal, state and local income, franchise, excise, real
and personal property, employment and other material tax reports, returns,
declarations and information statements (collectively, the "Returns") required
to be filed in connection with the Company's business and operations have been
timely filed, all information included in such Returns is accurate in all
material respects and all taxes shown as payable by the Company on such Returns
have been paid when due, including, without limitation, income, withholding,
payroll, sales and use and real and personal property taxes.  All Returns
covering periods through the fiscal year ended

                                      -6-
<PAGE>
 
December 31, 1992, have been filed and adequate provisions for taxes (including
any penalties and interest) have been made on the books of the Company and on
the most recent Financial Statements.  The Principal Stockholders and, to the
best knowledge of the Company and the Principal Stockholders, the other
stockholders of the Company have properly included, and paid, or received an
extension of time in accordance with applicable law for the filing of returns
relating to, all applicable taxes with respect to their distributive shares of
the Company's income in respect of such Returns.  There are no pending tax
audits of the Company or any of its stockholders who own in excess of 2% of the
shares of Common Stock of the Company relating to the Company's business and
operations and neither the Company or any of its stockholders who own in excess
of 2% of the shares of Common Stock of the Company has given any waiver or
extension (that continues in effect) of any period of limitation governing the
time of assessment or collection of any such taxes, nor has the Company or any
of the Principal Stockholders received any notice of any proposed deficiency
relating to the Company's business and operations for any duty, tax, assessment
or governmental charge, and there are no pending claims with respect thereto.

     2.14  EMPLOYEE BENEFIT PLANS.

     (a)  The Schedule of Significant Contracts sets forth a complete and
accurate list of each employee benefit plan within the meaning of Section 3(3)
of ERISA (the "ERISA Plans"), each compensation, consulting, employment or
collective bargaining agreement, and each stock option, stock purchase, stock
appreciation right, life, health, disability or other insurance or benefit,
bonus, deferred or incentive compensation, severance or separation, profit
sharing, retirement, or other employee benefit plan, practice, policy or
arrangement of any kind, oral or written, covering employees or former employees
of the Company which the Company or any ERISA Affiliate (as defined below) of
the Company maintains or contributes to (or maintained or contributed to since
January 1, 1987) or to which the Company or any ERISA Affiliate of the Company
is a party or by which it is otherwise bound (collectively, together with the
ERISA Plans, the "Benefit Plans").  No Benefit Plan is a "defined benefit plan"
(as defined in Section 414(j) of the Code).  The term "ERISA Affiliate" shall
mean with respect to any person, any trade or business (whether or not
incorporated) which, (i) together with such person, is under "common control" as
described in Section 414(c) of the Code and the Consolidated Omnibus Budget
Reconciliation Act and regulations or interpretations thereunder, or (ii) is a
member of a "controlled group," as defined in Section 414(b) of the Code, which
includes such person.

     (b)  The Company has not entered into and does not maintain any Benefit
Plan which includes any change of control provisions which would cause an
increase or acceleration of benefits or benefit entitlements to employees or
former employees of the Company or any other increase in the liabilities of the
Company under such Benefit Plan as a result of the transactions contemplated by
this Agreement.

     (c)  Neither the Company nor any ERISA Affiliate of the Company maintains
or has ever maintained or participates or has ever participated in a
multiemployer plan within the meaning of Section 3(37) of ERISA.  Neither the
Company nor any ERISA Affiliate of the Company nor any director or employee of
any of the foregoing, nor any fiduciary of any ERISA Plan has engaged in any
transaction in violation of Section 406 of ERISA or any "prohibited transaction"
(as defined in Section 4975(c)(1) of the Code) for which no exemption exists
under Section 408(b) of ERISA or Section 4975(d) of the Code in connection with
such ERISA Plan.  Neither the Company nor any ERISA Affiliate of the Company
provides or has ever provided medical benefits to former employees, except as
required by Section 601 of ERISA.

                                      -7-
<PAGE>
 
     (d)  Each ERISA Plan that is intended to qualify under Section 401 and
related provisions of the Code is the subject of a determination letter from the
Internal Revenue Service to the effect that it is so qualified under the Code
and that its related funding instrument is tax-exempt under Section 501 of the
Code.

     (e)  Except as provided in Schedule 2.14, each Benefit Plan is, and since
its inception, has been administered in material compliance with its terms and
with all applicable laws, rules and regulations governing such Benefit Plan,
including, without limitation, the rules and regulations promulgated by the
Department of Labor, the PBGC and the Internal Revenue Service under ERISA, the
Code or any other applicable law.  None of the Company or any fiduciary with
respect to any Benefit Plan has breached any of the responsibilities,
obligations or duties imposed on it by ERISA.

     (f)  There is no litigation, claim or assessment pending or, to the best
knowledge of the Principal Stockholders and the Company, threatened by, on
behalf of, or against any of the Benefit Plans or against the administrators or
trustees or other fiduciaries of any of the Benefit Plans that alleges a
violation of applicable state or federal law.  To the best knowledge of the
Principal Stockholders and Company, there is no basis for any such litigation,
claim or assessment.

     (g)  All accrued contributions and other payments to be made by the Company
to any Benefit Plan through the date hereof have been made or reserves adequate
for such purposes have been set aside therefor and reflected in the Financial
Statements.  The Company is not in default in performing any of its contractual
obligations under any of the Benefit Plans or any related trust agreement or
insurance contract.  There are no outstanding liabilities with respect to any
Benefit Plan other than liabilities for benefits to be paid to participants in
such Benefit Plan and their beneficiaries in accordance with the terms of such
Benefit Plan.

     2.15  ENVIRONMENTAL LIABILITIES.   The Company is in compliance in all
material respects with all applicable federal, state, county and municipal laws,
regulations, authorizations, licenses, approvals, permits and orders relating to
air, water, soil, solid waste management, Hazardous Substances (as defined
below), or the protection of health or the environment (collectively, the
"Environmental Laws").  There are no claims, actions, suits or proceedings
pending or, to the best knowledge of the Principal Stockholders and the Company,
threatened against, or involving, the Company under any of the Environmental
Laws (whether by reason of any failure to comply with  any of the Environmental
Laws or otherwise).  No decree, judgment or order of any kind under any of the
Environmental Laws has been entered against the Company.  There has not been a
Release on any property owned or leased by the Company of any Hazardous
Substance, and neither the Company nor the Principal Stockholders has received
any notification from any governmental entity that as to any property owned or
leased by the Company or any business and activities conducted on any such
property, there exists or has occurred a violation of applicable environmental
laws or potential liability for Release of Hazardous Substances.  For purposes
of this Section 2.15, "Hazardous Substance" shall mean a hazardous or toxic
substance (as defined under the Comprehensive Environmental Response,
Compensation and Liability Act, as amended) and petroleum, including crude oil
or any fraction thereof, but excluding underground crude oil in its natural
unrefined state, prior to its initial extraction, and "Release" shall mean any
spilling, leaking, pumping, pouring, emitting, emptying, discharging, injecting,
escaping, leaching, dumping or other disposal in any amount into or onto the
air, ground or surface water, land, or other parts of the environment, however
caused.

                                      -8-
<PAGE>
 
     2.16  NO MATERIAL ADVERSE CHANGES.  Other than as specifically disclosed
in this Agreement, the Financial Statements, the schedules delivered pursuant to
this Agreement or the documents referred to in this Agreement as having been
delivered to NTC, or as otherwise heretofore disclosed in writing to NTC by the
Company, there has not occurred (1) any material adverse change since September
30, 1993 in the business, income, operations, assets, liabilities, financial
condition, or prospects of the Company, or (2) any condition (other than general
economic or competitive conditions), event, circumstance, fact, or other
occurrence, whether occurring before or since September 30, 1993 that may
reasonably be expected to have or result in such a material adverse change
(collectively, a "Company Material Adverse Change").

     2.17  CONDUCT OF BUSINESS IN NORMAL COURSE.  Since September 30, 1993, the
business of the Company has been conducted only in the ordinary and usual course
consistent with past practice and with the restrictions set forth in Section 4.1
(as though such restrictions had been in force and effect throughout such
period).

     2.18  CHANGE IN BUSINESS RELATIONSHIPS.  Neither the Company nor the
Principal Stockholders have notice or reason to believe, whether on account of
the transactions contemplated by this Agreement or otherwise, that (a) any
customer, agent, representative or supplier of the Company intends to
discontinue, diminish or change its relationship with the Company, the effect of
which would be material to the business of the Company, or (b) any executive
officer or key employee of the Company intends to terminate or substantially
alter the terms of his or her employment.

     2.19  BROKERS' AND FINDERS' FEES.  The Company has not incurred any
liability for brokerage commissions, finders' fees, or like compensation with
respect to the transactions contemplated hereunder.

     2.20  NO OMISSIONS.  None of the Statements of Essential Facts contained
in Article II and none of the representations, warranties and covenants of the
Company or the Principal Stockholders contained herein or in the schedules
provided for herein or in the Financial Statements is false or misleading in any
material respect or omits to state a fact herein or therein necessary to make
such statements not misleading in any material respect.


                                  ARTICLE III
              REPRESENTATION AND WARRANTIES OF NTC AND MERGER CO.

     This Agreement is entered into by the Company and the Principal
Stockholders upon the understanding, and NTC and Merger Co. jointly and
severally represent and warrant, that the following statements are true and
correct on the date of this Agreement.

     3.1  ORGANIZATION AND EXISTENCE OF NTC AND MERGER CO.   NTC and Merger Co.
are corporations duly organized, validly existing and in good standing under the
laws of the State of Delaware.  Each of NTC and Merger Co. has the corporate
power to own its own properties and to carry on its business as it is now being
conducted, and each is duly qualified and in good standing as a foreign
corporation in each jurisdiction where the location and character of its
properties and the business conducted by it require such qualification.

                                      -9-
<PAGE>
 
     3.2  CAPITALIZATION.

     (a)  The authorized capital stock of NTC consists of (a) 140,000,000
shares of common stock, par value $1.66 2/3 per share, of which 53,142,573
shares were issued and out-standing as of November 30, 1993, and (b) 10,000,000
shares of Preferred Stock, of which 51,200 shares are issued and outstanding;

     (b)  The authorized capital stock of Merger Co. consists of 1,000 shares of
common stock, par value  $1.00 per share, all of which are issued and
outstanding and are owned of record and beneficially by NTC; and

     (c)  The shares of common stock of NTC deliverable pursuant to this
Agreement and the Merger Agreement will be duly authorized and, upon issuance
and delivery in accordance with the terms hereof and thereof, will be validly
issued, fully paid, and nonassessable, with no liability attaching to the
ownership thereof arising from NTC or Merger Co., and such shares will have been
registered under the Securities Act of 1933 (the "Securities Act") and approved
for listing on the NASDAQ National Market System.
                              
     3.3  AUTHORIZATION OF TRANSACTIONS AND AGREEMENTS.  The execution,
delivery, and performance of this Agreement have been duly authorized by the
boards of directors of NTC and Merger Co. in accordance with their respective
certificates of incorporation and by-laws and governing statutes.  This
Agreement constitutes, and the Merger Agreement will constitute, the legal,
valid and binding obligations of NTC and Merger Co., enforceable against each of
them in accordance with their respective terms.  Approval thereof by the
stockholders of NTC is not required by law or by the rules of the National
Association of Securities Dealers, Inc. (the "NASD").  Both NTC and Merger Co.
have the corporate power to execute, deliver and perform this Agreement and the
Merger Agreement and to consummate the transactions herein and therein
contemplated, and such execution, delivery and performance do not violate any
provisions of the respective certificates of incorporation or by-laws of NTC or
Merger Co., or any agreement to which either NTC or Merger Co. is a party or by
which either NTC or Merger Co. is otherwise bound.  Except for the regulatory
approval referred to in Section 4.4 hereof, approval of the sole stockholder of
Merger Co. referred to in Section 4.8 hereof, the registration of the offer and
sale of the common stock of NTC to be issued pursuant to the Merger under the
Securities Act, the registration or qualification of the common stock of NTC
under any applicable state securities or "blue sky" laws, and the filing with
the NASD of prior notice of the issuance of additional shares of common stock of
NTC, no consent of any governmental authority or other person is required to be
obtained, and no prior notice to any governmental authority or other person is
required to be given, by NTC or Merger Co. in order to permit consummation of
the Merger.

     3.4  SEC FILINGS AND FINANCIAL STATEMENTS.

     (a)  NTC has heretofore delivered to the Company copies of NTC's (a) Annual
Report on Form 10-K for the fiscal year ended December 31, 1992, (ii) 1992
Annual Report to Shareholders, (iii) Quarterly Reports on Form 10-Q for the
fiscal quarters ended June 30, 1993 and September 30, 1993, and (iv) all other
reports, registration statements and other documents filed by NTC with the
Securities and Exchange Commission (the "Commission") since December 31, 1992
(collectively, the "NTC Filings").  Since December 31, 1992, NTC has timely
filed all reports, registration statements and other documents required to be
filed with the Commission under the rules and regulations of the Commission, and
all such reports, registration statements and other

                                     -10-
<PAGE>
 
documents have complied in all material respects, as of their respective filing
dates and effective dates, as the case may be, with all applicable requirements
of the Securities Act or the Securities Exchange Act of 1934 (the "Exchange
Act").  As of their respective filing and effective dates, none of such reports,
registration statements or other documents contained any untrue statement of a
material fact or omitted to state a 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.
                       
     (b)  The audited consolidated financial statements and unaudited interim
financial statements of NTC contained or incorporated by reference in the NTC
Filings have been prepared in conformity with generally accepted accounting
principles applied on a consistent basis, and, together with the notes thereto,
present fairly the consolidated financial position of NTC and its subsidiaries
at the dates shown and the consolidated results of their operations, changes in
stockholders' equity and cash flows for the periods then ended.  The unaudited
interim financial statements as at, and for, the periods ending June 30, 1993
and September 30, 1993 include all adjustments necessary for a fair presentation
of the financial position of NTC and its subsidiaries and the results of their
respective operations for the interim periods presented, subject to normal,
recurring year-end adjustments and the omission of footnote disclosure.

     3.5  BROKERS' AND FINDERS' FEES.  Neither NTC nor Merger Co. has incurred
any brokerage commissions, finders' fees or like compensation with respect to
the transactions contemplated hereby.

     3.6  NO ADVERSE CHANGES; CONDUCT OF BUSINESS IN NORMAL COURSE.  Other than
as specifically disclosed in this Agreement, the NTC Filings or any other
documents referred to in this Agreement as having been delivered to the Company,
there has not occurred (1) any material adverse change since September 30, 1993
in the business, income, operations, assets, liabilities, financial condition or
prospects of NTC, or (2) any condition (other than general economic or
competitive conditions), event, circumstance, fact or other occurrence, whether
occurring before or since September 30, 1993, that may reasonably be expected to
have or result in such a material adverse change.  Since September 30, 1993 the
business of NTC has been conducted only in the ordinary and usual course
consistent with past practice or in a manner approved by the appropriate
regulatory authorities.


                                   ARTICLE IV
                             ADDITIONAL AGREEMENTS

     4.1  CONDUCT OF BUSINESS.   Except as  otherwise contemplated in this
Agreement, the Company shall conduct its business in the usual and ordinary
course consistent with past practice.  Without limiting the foregoing, except as
otherwise contemplated in this Agreement or with the prior written consent of
NTC, (a) no change shall be made in the certificate of incorporation or by-laws
of the Company; (b) no change shall be made in the capitalization of the Company
or in the number of issued and outstanding shares of the Company, except for any
Company repurchases of shares of Common Stock of the Company pursuant to the
terms of the Stockholder Agreement dated July 31, 1987, and for the issuance of
the Bonus Plan Shares; (c) the compensation or benefits of officers or key
employees of the Company shall not be increased and no bonuses shall be paid
except for normal and customary increases made or bonuses paid or accrued or
booked on or before September 30, 1993 in accordance with past practices; (d)
except

                                     -11-
<PAGE>
 
for a normal year-end dividend of $880,000 in the aggregate, no dividends or
other distributions shall be declared or paid by the Company;(e) the Company
shall use its best efforts to maintain its present insurance coverage in respect
to its properties and business; (f) no significant changes shall be made in the
general nature of the business conducted by the Company; (g) no employment,
consulting, or other similar agreements shall be entered into by the Company
that are not terminable by the Company on 30 days' notice or less without
penalty or obligation, except for contracts with existing or new clients of the
Company and normal maintenance contracts of the Company entered into in the
ordinary course consistent with past practice; (h) the Company shall not take
any action that would result in a termination, partial termination, curtailment,
discontinuance of a Benefit Plan or merger of any Benefit Plan into another plan
or trust; (i) the stockholders owning in excess of 2% of the shares of Common
Stock of the Company shall file all Returns in a timely manner and shall not
make any application for or consent to any extension of time for filing any
Return or any extension of the period of limitations applicable thereto; (j) the
Company shall not make any expenditure for fixed assets in excess of $125,000
for any single item, or $500,000 in the aggregate, or enter into leases of fixed
assets having an annual rental in excess of $100,000; (k) the Company shall not
incur any liabilities or obligations, make any commitments or disbursements,
acquire or dispose of any property or asset, make any contract or agreement, or
engage in any transaction except in the ordinary course consistent with past
practices; (l) the Company shall not do or fail to do anything that will cause a
breach of, or default under, any contract, agreement, commitment, obligation,
appointment, plan, trust or other arrangement to which the Company is a party or
by which the Company is otherwise bound; and (m) no changes of a material nature
shall be made in the Company's accounting procedures, methods, policies or
practices or the manner in which the Company maintains its records.
                           
     4.2  ACCESS TO INFORMATION.  To the extent permissible under law, the
Company and the Principal Stockholders shall (a) give NTC and its
representatives full access to further information (including, but not limited
to, records, files, correspondence, tax work papers and audit work papers) with
respect to the Company (but specifically excluding any individual tax returns of
the Company's stockholders); and (b) furnish to NTC and its representatives, as
soon as they become available, all month-end balance sheets and profit and loss
statements of the Company, internal and external audit reports of the Company
and such other reports relating to the Company that NTC may reasonably request.
NTC shall use such information solely for the purpose of conducting business,
legal and financial reviews of the Company and for such other purposes as may be
related to this Agreement.  NTC shall maintain the confidentiality of all such
information (other than information which is in the public domain or otherwise
ascertainable from public or outside sources) except to the extent that
disclosure is required by judicial process or governmental or regulatory
authorities in which case NTC shall give the Company and the Principal
Stockholders prompt notice in order that they may seek to obtain a protective
order.  Pending the Closing, representatives of NTC shall be given full access
to the Company's business activities and afforded the opportunity to observe its
business activities and consult with its directors and officers regarding the
same on an ongoing basis.

     4.3  STOCKHOLDERS MEETING; PROXY STATEMENT.  As soon as practicable after
the Registration Statement is declared effective, and in no event later than
March 7, 1994, the Company shall call and hold a special meeting of the
stockholders of the Company (the "Stockholders Meeting") to act upon and
consider the Merger and the Merger Agreement in accordance with the certificate
of incorporation and by-laws of the Company and applicable Delaware law.   Prior
to the Stockholders Meeting, the Company will prepare and distribute to its
stockholders a definitive proxy statement (the "Proxy Statement") that will
comprise part of the Registration Statement (as defined

                                     -12-
<PAGE>
 
in Section 4.5 hereof).  The Proxy Statement shall contain (a) such information
as is required to be included in the Registration Statement and (b) such
additional information as NTC deems reasonably necessary so that the Proxy
Statement may be included as part of the Registration Statement.  NTC shall
furnish to the Company such information relating to it and its affiliates and
the transactions contemplated in this Agreement and the Merger Agreement and
such further information as may be necessary or as may be reasonably requested
by the Company for use in the Proxy Statement.  The Company shall furnish NTC
and its counsel with a copy of the Proxy Statement in advance of mailing and a
reasonable time prior to the proposed date on which the Registration Statement
is to be filed with the Commission, and the Company shall make such changes to
the Proxy Statement as NTC deems necessary to permit the Proxy Statement to be
included in the Registration Statement.  The Company shall not mail or otherwise
furnish or publish to its stockholders any proxy solicitation material or other
material relating to the Merger or the Merger Agreement that might constitute a
"prospectus" within the meaning of the Securities Act other than the Proxy
Statement.  The Company, acting through its board of directors, shall recommend
to the stockholders of the Company that they vote their shares in favor of the
Merger and the Merger Agreement and shall reflect such recommendation in the
Proxy Statement.  The Company shall take all lawful action to solicit proxies
for and otherwise obtain stockholder approval of the Merger and Merger
Agreement.  The Principal Stockholders agree to vote their shares in favor of
the Merger at the meeting and any adjournment thereof.
                      
     4.4  REGULATORY APPROVAL.  NTC and Merger Co. will, as soon as
practicable, file with the Federal Reserve Board an application for, and use
their best efforts to obtain, approval of the transactions contemplated by this
Agreement and the Merger Agreement under the Bank Holding Company Act of 1956,
as amended, upon such terms and conditions as are satisfactory to NTC.  The
Company and the Principal Stockholders shall cooperate fully in the process of
obtaining such approval.

     4.5  REGISTRATION STATEMENT.  As soon as reasonably practicable after the
date hereof, NTC shall prepare and file with the Commission a Registration
Statement registering under the Securities Act the offer and sale of the shares
of common stock of NTC to be issued in the Merger (the "Registration
Statement").  NTC shall use its best efforts to have the Registration Statement
declared effective and shall maintain such effectiveness until immediately after
the Effective Date.  The Company shall cooperate with NTC in the preparation,
filing and process of securing the effectiveness of the Registration Statement
and shall furnish to NTC such information relating to it and its affiliates and
the transactions contemplated in this Agreement and the Merger Agreement and
such further and supplemental information as may be necessary or as may be
reasonably requested by NTC for use in the Registration Statement.  NTC will use
its best efforts to obtain all necessary blue sky permits and approvals required
to permit the issuance of common stock of NTC in the Merger and to obtain
approval for listing the shares of common stock of NTC to be issued in the
Merger on the NASDAQ National Market System.

     4.6  INFORMATION TO BE INCLUDED IN PROXY STATEMENT AND REGISTRATION
STATEMENT.  None of the information furnished by NTC, Merger Co. or the Company
for inclusion in the Registration Statement, the Proxy Statement, or any other
document filed with the Commission or any state securities commission, at the
respective times at which such documents are filed with the Commission or such
state securities commission or, in the case of the Registration Statement, when
it becomes effective, or in the case of the Proxy Statement, when mailed or at
the time of the Stockholders Meeting, shall be false or misleading with respect
to any material fact or shall omit

                                     -13-
<PAGE>
 
to state any material fact necessary in order to make the statements therein, in
light of the circumstances in which they were made, not misleading.

     4.7  AFFILIATE LETTERS.  The Company shall provide NTC with such
information as may be reasonably necessary to determine the identity of those
persons who may be deemed to be "affiliates" of the Company within the meaning
of Rule 145 (or any successor rule) promulgated by the Commission under the
Securities Act or within the meaning of Commission Staff Accounting Bulletin No.
65 (interpreting certain requirements for treating a business combination as a
pooling of interests) and a list of those persons whom the Company believes may
be deemed to be affiliates.  Within 45 days of the execution of this Agreement,
the Company will obtain and deliver to NTC affiliate letters, substantially in
the form of Exhibit B to this Agreement, from each of the directors, principal
officers, or holders of five percent or more of the outstanding shares of the
Common Stock of the Company and from any persons who, in the opinion of counsel
for NTC, may be deemed to be affiliates within the meaning of Rule 145 or
Commission Staff Accounting Bulletin No. 65.

     4.8  MERGER CO. STOCKHOLDER APPROVAL.  NTC, as the owner of all of the
outstanding shares of capital stock of Merger Co., shall cause this Agreement,
the Merger Agreement and the transactions contemplated herein and therein to be
approved by the sole stockholder of Merger Co. in accordance with the laws of
the State of Delaware.

     4.9  BOARD OF DIRECTORS' NOTICES AND MINUTES.  To the extent permissible
under law, the Company shall promptly transmit to NTC copies of all notices,
minutes, consents and other materials that the Company provides to its
directors, except for legal advice and for deliberations and information as to
this proposed transaction.  NTC agrees to hold all such information in
confidence and trust and to act in a fiduciary manner with respect to such
information.

     4.10  BEST EFFORTS.  The parties hereto shall use their best efforts in
good faith to satisfy the various conditions to Closing and to consummate the
Merger as soon as practicable.  None of the parties hereto will intentionally
take or intentionally permit to be taken any action that would be in breach of
the terms or provisions of this Agreement or that would cause any of the
representations contained herein to be or become untrue.

     4.11  SOFTWARE LICENSING AGREEMENT.  In the event that notwithstanding
Section 4.10 hereof any of the various conditions to closing shall fail to be
satisfied by June 30, 1994 (or such later date agreed to by the Boards of
Directors of NTC and the Company) and provided such failure is not the result of
a Company Material Adverse Change, the parties will, in lieu of consummating the
Agreement upon the terms contemplated herein, enter into a Software Licensing
Agreement pursuant to which the Company will lease all of the software it uses
in the conduct of its business to NTC and will provide the expertise necessary
to operate such software for a period of five years from the date of such
agreement at an annual minimum cost of $1,500,000.  During such period, the
parties will continue to use their best efforts to consummate the acquisition of
the Company by NTC upon mutually agreeable terms.  In the event the parties
enter into a Software Licensing Agreement as described in this Section 4.11, the
Company will grant NTC a right of first refusal to acquire the Company in the
event it receives a third party acquisition offer upon terms substantially
similar to those set forth in such third party offer.  NTC represents that it
needs no regulatory approval or other consent or authorization not already
obtained to enter into the Software Licensing Agreement.

                                     -14-
<PAGE>
 
     4.12  COMPANY OPTION.  Notwithstanding Section 1.3 hereof, in the event
the Closing Date Value shall be less than $33 per share, the Company may elect
for the Company's stockholders to receive in the aggregate such number of shares
of NTC common stock as shall have a market value equal to $22,500,000, derived
by using a valuation of NTC's common stock of $33 per share.  In the event the
Closing Date Value shall be more than $48 per share, the Company may elect for
the Company's stockholders to receive in the aggregate such number of shares of
NTC common stock as shall have a market value equal to $22,500,000, derived by
using the Closing Date Value, notwithstanding that it is in excess of $48 per
share.

     4.13  BUSINESS RELATIONS AND PUBLICITY. The Company and the Principal
Stockholders will use their best efforts to preserve the reputation and
relationship of the Company with suppliers, clients, customers, employees, and
others having business relations with the Company.  No press release or other
communication in connection with or relating to this Agreement or the
transactions contemplated hereby (other than communications with appropriate
regulatory authorities) shall be issued or made except as mutually agreed upon;
provided that NTC, after consultation with the Company and the Principal
Stockholders, may make such disclosures concerning the transactions provided for
herein as NTC believes are required by the Exchange Act.

     4.14  NO CONDUCT INCONSISTENT WITH THIS AGREEMENT.  The Company and the
Principal Stockholders shall not (a) offer or sell, or negotiate with or
entertain any proposals from any other person for any such offer or sale of, any
shares of the capital stock of the Company, or (b) negotiate with or entertain
any proposals from any other person for any other transaction wherein the
business or substantially all of the properties of the Company would be
acquired, directly or indirectly, by any party other than NTC or a subsidiary of
NTC, except, in each case, (i) upon the termination of this Agreement pursuant
to Section 8.3, (ii) with the prior written consent of NTC, or (iii) pursuant to
a written direction from any regulatory authority.

     4.15  UNTRUE REPRESENTATIONS AND WARRANTIES.  During the term of this
Agreement, if any party becomes aware of any facts or of the occurrence or
impending occurrence of an event which would cause one or more of the
representations and warranties of such party contained in this Agreement to be
or become untrue as of the Closing Date then:

     (a)  such party shall immediately give detailed written notice thereof to
the other party; and

     (b)  such party shall use reasonable efforts to change such facts or events
to make such representations and warranties true, unless the same shall have
been waived in writing by the other party.

     4.16  INDEMNIFICATION BY STOCKHOLDERS.  The Company will use its best
efforts to obtain by December 31, 1993 the signatures of stockholders of the
Company owning such number of shares as will, when added to the total number of
shares owned by the Principal Stockholders, equal at least 90% of the issued and
outstanding shares of Common Stock of the Company, committing such stockholders
to be bound by 7.2 hereof.

                                     -15-
<PAGE>
 
                                   ARTICLE V
           CONDITIONS PRECEDENT TO OBLIGATIONS OF NTC AND MERGER CO.

     Unless the conditions are waived by NTC or Merger Co., all obligations of
NTC and Merger Co. under this Agreement are subject to the fulfillment, on or
prior to the Closing, of each of the following conditions:

     5.1  REPRESENTATIONS AND WARRANTIES; PERFORMANCE OF AGREEMENTS.  The
representations and warranties contained in Article II of this Agreement and any
representations or warranties of the Company and the Principal Stockholders
contained herein or in any documents, certificates, or schedules delivered by,
or on behalf of, the Company to NTC pursuant to this Agreement shall be true and
correct in all material respects at the Closing as though made on the Closing
Date, in each case to the reasonable satisfaction of NTC, and the Company and
the Principal Stockholders shall have performed all agreements herein required
to be performed by it on or prior to the Closing.

     5.2  CLOSING CERTIFICATE.  NTC shall have received a certificate signed by
the Principal Stockholders and the Chief Executive Officer of the Company and
dated as of the Closing Date, certifying in such detail as NTC may reasonably
request as to the fulfillment of the conditions to the obligations of NTC and
Merger Co. as set forth in this Agreement and required to be fulfilled by the
Company on or before the Closing.

     5.3  REGULATORY APPROVALS.  NTC and Merger Co. shall have duly obtained
the approval of the Federal Reserve Board referred to in Section 4.4 upon such
terms and conditions as are satisfactory to NTC, and there shall be no motion
for rehearing or appeal from such approval or commencement of any suit or action
seeking to enjoin the transactions provided for herein or to obtain substantial
damages in respect of them.

     5.4  APPROVAL OF MERGER AND DELIVERY OF MERGER AGREEMENT. The Merger
Agreement and the transactions contemplated therein shall have been approved by
the vote of the stockholders of the Company at a meeting called and held in
accordance with the laws of the State of Delaware and the certificate of
incorporation and by-laws of the Company.  The proper officers of the Company
shall have executed and delivered to Merger Co. copies of the Merger Agreement
and of the certificate of merger, in form suitable for filing with the Secretary
of State of the State of Delaware, and shall have executed and delivered all
such other certificates, statements, or instruments as may be necessary or
appropriate to effect such filings.  Not more than 10% of the shares of the
Common Stock of the Company shall be subject to exercises of appraisal rights by
the holders thereof in accordance with Section 262 of the Delaware General
Corporation Law (the "DGCL").

     5.5  EFFECTIVENESS OF THE REGISTRATION STATEMENT AND APPROVAL FOR LISTING.
The Registration Statement shall have become effective with respect to the
shares of common stock of NTC to be issued in the Merger, and no stop order
suspending the effectiveness of such Registration Statement shall have been
issued and no proceeding for that purpose shall have been instituted or
threatened.The shares of NTC common stock to be issued in the Merger shall have
been approved for listing on the NASDAQ National Market System.

     5.6  NO LITIGATION.  No suit or other action shall have been instituted or
threatened seeking to enjoin the consummation of the transactions contemplated
herein or in the

                                     -16-
<PAGE>
 
Merger Agreement or to obtain other relief in connection with this Agreement,
the Merger Agreement or the transactions contemplated herein or therein that NTC
believes, in good faith and with the advice of counsel, makes it undesirable or
inadvisable to consummate the Merger by reason of the probability that the
proceeding would result in the issuance of an order enjoining the Merger or in a
determination that the Company has failed to comply with applicable legal
requirements of a material nature in connection with the Merger or actions
preparatory thereto or would have a material adverse effect on the future
conduct of the business of the Company.

     5.7  AUDIT.  NTC and Arthur Andersen & Co. shall have had an adequate
opportunity to conduct such a review or examination of the financial condition,
assets, liabilities, results of operation and business of the Company as NTC
shall deem prudent, and such review or examination shall not have disclosed
matters that are  inconsistent in any material respect with the representations
and warranties of the Company and the Principal Stockholders contained in this
Agreement.

     5.8  OPINION OF COUNSEL.  NTC shall have received the opinion of Alston &
Bird, counsel for the Company, dated as of the Closing Date, and in form
satisfactory to NTC and its counsel, to the effect that:

     (a)  The Company is a corporation duly organized, validly existing, and in
good standing under the laws of the State of Delaware, has the corporate power
to own its own properties and to carry on its business as it is now being
conducted, and is duly qualified and in good standing as a foreign corporation
in the States of Georgia and Washington.  To the best knowledge of such counsel,
the Company has no subsidiaries.

     (b)  The authorized capital stock of the Company consists of 169,500 shares
of common stock, par value $0.0125 per share, of which 19,500 shares are
designated as Class A Common Stock, 16,350 of which are issued and outstanding,
and 150,000 shares are designated as Class B Common Stock, 85,351 of which are
issued and outstanding.  The issued and outstanding shares of Common Stock of
the Company have been duly and validly authorized and issued, are fully paid and
nonassessable, and are free of preemptive rights.  Except for rights of NTC and
Merger Co. under this Agreement, or matters disclosed herein, to the best
knowledge of such counsel, there are no options, agreements, contracts, or other
rights in existence to purchase or acquire from the Company any shares of
capital stock of the Company, whether now or hereafter authorized or issued.

     (c)  The execution, delivery and performance of this Agreement and the
Merger Agreement, and the transactions contemplated herein and therein, have
been duly authorized by the board of directors of the Company and, in the case
of the Merger Agreement, by the stockholders of the Company, these being the
only corporate authorizations required under the Company's certificate of
incorporation and by-laws and the laws of the State of Delaware.  This Agreement
and the Merger Agreement constitute the legal, valid, and binding obligations of
the Company enforceable against the Company in accordance with their respective
terms, subject to applicable bankruptcy, insolvency, reorganization, moratorium,
or similar laws affecting creditors generally and to general principles of
equity.

     (d)  The execution, delivery and performance of this Agreement and the
Merger Agreement do not violate any provisions of the certificate of
incorporation or by-laws of the Company, any provision of applicable law or the
regulations thereunder or, to the best knowledge

                                     -17-
<PAGE>
 
of such counsel, any contract or agreement to which the Company is a party or by
which the Company is otherwise bound that would prohibit consummation of the
transactions contemplated by this Agreement and the Merger Agreement in the
manner herein and therein contemplated.

     (e)  To the best knowledge of such counsel, there are no claims, actions,
suits, or proceedings pending or threatened against the Company, at law or in
equity, or before any federal, state, municipal, or other governmental
authority, or before any arbitrator or arbitration panel, whether by contract or
otherwise, or any decrees, judgments, or orders of any kind in existence en-
joining or restraining the Company or any of its directors, officers, or
employees from taking action of any kind in connection with the business of the
Company.

     (f)  There are no actions, suits, or proceedings, pending or, to the best
knowledge of such counsel after reasonable investigation, threatened against the
Company to enjoin consummation of the Merger of the Company and Merger Co. or to
obtain other relief in connection with this Agreement or the transactions
contemplated hereby.

     (g)  No facts have come to the attention of such counsel that lead it to
believe that the Proxy Statement, at the time of mailing to the stockholders of
the Company, at the date of the Stockholders Meeting or at the time the
Registration Statement became effective, contained any untrue statement of a
material fact or omitted to state any material fact required to be stated
therein or necessary to make the statements therein not misleading.

     In rendering its opinion, such counsel may rely as to matters of fact upon
such certificates of the officers of the Company or governmental officials as
such counsel deems appropriate.

     5.9  NO MATERIAL ADVERSE CHANGES.  There shall not have occurred since the
date of this Agreement any Company Material Adverse Change.

     5.10  POOLING OF INTERESTS COMFORT LETTER.  NTC shall have received a
letter from Arthur Andersen & Co., in form satisfactory to NTC, approving the
accounting treatment of the Merger as a "pooling of interests" in accordance
with generally accepted accounting principles as of a date not more than five
business days prior to the Closing Date.

     5.11  AFFILIATE LETTERS.  Not later than 45 days following the date of
execution of this Agreement, NTC shall have received affiliate letters,
substantially in the form attached hereto as Exhibit B, from each of the
directors, principal officers, or holders of five percent or more of the
outstanding shares of the Common Stock of the Company and from any persons who,
in the opinion of counsel for NTC, may be deemed to be "affiliates" within the
meaning of Rule 145 under the Securities Act or   Commission Staff Accounting
Bulletin  No. 65, pursuant to which such affiliates shall agree, among other
things, not to make any sale, transfer or other disposition of (a) shares of
capital stock of the Company or NTC within 30 days prior to the Merger, and (b)
shares of common stock of NTC issued in the Merger prior to the publication by
NTC of the financial results of the combined operations of NTC and the Company
covering a period of at least 30 days after the Merger.

     5.12  CONSENTS AND PERMISSIONS.  The Company shall have obtained all such
written consents, permissions and approvals as are required under any
agreements, contracts,

                                     -18-
<PAGE>
 
appointments, indentures, plans, trusts or other arrangements with third parties
required to effect the transactions contemplated by this Agreement and the
Merger Agreement.

     5.13  COMFORT LETTER.  NTC shall have received from Price Waterhouse & Co.
"comfort letters" dated the date of mailing of the Proxy Statement and the
Effective Date, covering matters customary to transactions such as the Merger
and in form and substance reasonably satisfactory to NTC.

     5.14  EMPLOYMENT AGREEMENTS.  The Company shall have entered into
Employment Agreements with Messrs. James G. Pope, R. David Parsons, David M.
Gladstone, and any other person mutually agreed to by NTC and the Company,
substantially in the form attached hereto as Exhibit C and dated as of the
Closing Date.  On the Closing Date, each of such persons shall each be active in
the management of the Company and capable of performing their duties under their
respective Employment Agreements.

     5.15  STOCK OPTIONS AND STOCKHOLDERS AGREEMENT.  All options, agreements,
contracts and other rights to purchase or acquire from the Company any shares of
capital stock of the Company that are unexercised as of the date of this
Agreement shall have been cancelled on terms satisfactory to NTC.  The
Stockholders Agreement dated July 31, 1987 shall have been terminated to the
extent necessary to consummate the transactions contemplated hereby.

     5.16  INDEMNIFICATION BY STOCKHOLDERS.  The Company shall have obtained
the signatures of stockholders of the Company owning such number of shares as
will, when added to the total number of shares owned by the Principal
Stockholders, equal at least 90% of the issued and outstanding shares of Common
Stock of the Company, committing such stockholders to be bound by 7.2 hereof.

     5.17  OTHER DOCUMENTS.  NTC shall have received at the Closing such other
customary documents, certificates, or instruments as it may have reasonably
requested evidencing compliance by the Company and the Principal Stockholders
with the terms and conditions of this Agreement.


                                   ARTICLE VI
                   CONDITIONS PRECEDENT TO OBLIGATIONS OF THE
                     COMPANY AND THE PRINCIPAL STOCKHOLDERS

     Unless the conditions are waived by the Company and the Principal
Stockholders, all obligations of the Company and the Principal Stockholders
under this Agreement are subject to the fulfillment, on or prior to the Closing,
of each of the  following conditions:

     6.1  REPRESENTATIONS AND WARRANTIES; PERFORMANCE OF AGREEMENTS.  The
representations and warranties contained in Article III of this Agreement and
any representations or warranties of either NTC or Merger Co. contained herein
or in any documents, certificates, or schedules delivered by them or on their
behalf to the Company pursuant to this Agreement shall be true and correct in
all material respects at the Closing as though made on the Closing Date, in each
case to the reasonable satisfaction of the Company and the Principal
Stockholders, and NTC and Merger Co. shall have performed all agreements herein
required to be performed by them on or prior to the Closing.

                                     -19-
<PAGE>
 
     6.2  CLOSING CERTIFICATE.  The Company and the Principal Stockholders
shall have received certificates signed by the Chairman, President and Chief
Executive Officer, a Senior Executive Vice President, an Executive Vice
President or a Senior Vice President of NTC and by the President and any Vice
President of Merger Co., each dated as of the Closing Date, certifying in such
detail as the Company and the Principal Stockholders may reasonably request, as
to the ful-fillment of the conditions to the obligations of the Company and the
Principal Stockholders as set forth in this Agreement.

     6.3  REGULATORY APPROVALS.  NTC and Merger Co. shall have duly obtained
the approval of the Federal Reserve Board referred to in Section 4.4 and there
shall be no motion for rehearing or appeal from such approval or commencement of
any suit or action seeking to enjoin the transactions provided for herein or to
obtain substantial damages in respect of them.

     6.4  APPROVAL OF MERGER AND DELIVERY OF MERGER AGREEMENT.  The Merger
Agreement and the transactions contemplated therein shall have been approved by
the stockholders of the Company and the sole stockholder of Merger Co. in
accordance with the laws of the State of Delaware and the certificates of
incorporation and by-laws of the Company and Merger Co., respectively.  The
proper officers of Merger Co. and, in the case of the Merger Agreement, NTC,
shall have executed and delivered to the Company, copies of the Merger Agreement
and the certificate of merger, in form suitable for filing with the Secretary of
State of the State of Delaware and shall have executed and delivered all such
other certificates, statements, or instruments as may be necessary or
appropriate to effect such a filing.

     6.5  EFFECTIVENESS OF THE REGISTRATION STATEMENT  AND APPROVAL FOR LISTING.
The Registration Statement shall have become effective with respect to the
shares of common stock of NTC to be issued in the Merger, and no stop order
suspending the effectiveness of such Registration Statement shall have been
issued and no proceeding for that purpose shall have been instituted or
threatened.  The shares of NTC common stock to be issued in the Merger shall
have been approved for listing on the NASDAQ National Market System.

     6.6  NO LITIGATION.  No suit or other action shall have been instituted or
threatened seeking to enjoin the consummation of the transactions contemplated
hereby or to obtain other relief in connection with this Agreement or the
transactions contemplated hereby that the Company believes, in good faith and
with the advice of counsel, makes it undesirable or inadvisable to consummate
the Merger by reason of the probability that the proceeding would result in the
issuance of an order enjoining the Merger or in a determination that NTC or
Merger Co. has failed to comply with applicable legal requirements of a material
nature in connection with the Merger or actions preparatory thereto or would
have a material adverse effect on the future conduct of business of NTC, Merger
Co. or the Company.

     6.7  OPINION OF COUNSEL.  The Principal Stockholders and the Company shall
have received the opinion of Schiff Hardin & Waite, counsel for NTC, dated as of
the Closing Date, and in form satisfactory to the Principal Stockholders and the
Company and its counsel to the effect that:

     (a)  NTC and Merger Co. are corporations duly organized, validly existing
and in good standing under the laws of the State of Delaware.  Each of NTC and
Merger Co. has the corporate power to own its own properties and to carry on its
business as it is now being conducted.

                                     -20-
<PAGE>
 
     (b)  The shares of common stock of NTC deliverable pursuant to this
Agreement and the Merger Agreement will be duly authorized and, upon issuance
and delivery in accordance with the terms hereof and thereof, will be validly
issued, fully paid, and nonassessable, with no liability attaching to the
ownership thereof arising from NTC or Merger Co., and such shares will have been
registered under the Securities Act.

     (c)  The execution, delivery and performance of this Agreement, the Merger
Agreement and the transactions contemplated herein and therein have been duly
authorized by the boards of directors of NTC and Merger Co. and by the sole
stockholder of Merger Co., these being the only corporate authorizations
required under NTC's or Merger Co.'s respective certificates of incorporation
and by-laws and the laws of the State of Delaware.  This Agreement and the
Merger Agreement constitute the legal, valid, and binding obligations of NTC and
Merger Co. enforceable against each of them in accordance with their respective
terms, subject to applicable bankruptcy, insolvency, reorganization, moratorium,
or similar laws affecting creditors generally and to general principles of
equity.

     (d)  The execution, delivery and performance of this Agreement and the
Merger Agreement do not violate any provisions of the certificates of
incorporation or by-laws of NTC or Merger Co. or, to the best of such counsel's
knowledge after reasonable investigation, of any contract or agreement to which
NTC or Merger Co. is a party or by which either is otherwise bound that would
prohibit consummation of the transactions contemplated by this Agreement and the
Merger Agreement in the manner herein and therein contemplated.

     (e)  To the best knowledge of such counsel, there are no claims, actions,
suits, or proceedings, pending or threatened against NTC or Merger Co., at law
or in equity, or before any federal, state, municipal, or other governmental
authority, or any decrees, judgments, or orders of any kind that are in
existence enjoining or restraining NTC or Merger Co. or any of their respective
directors, officers, or employees from taking action of any kind in connection
with the transactions contemplated hereby.

     (f)  There are no actions, suits, or proceedings, pending or, to the best
knowledge of such counsel after reasonable investigation, threatened against NTC
or Merger Co., to enjoin consummation of the Merger or to obtain other relief in
connection with this Agreement, the Merger Agreement or the transactions
contemplated herein or therein.

     (g)  No facts have come to the attention of such counsel that lead it to
believe that the Registration Statement, at the time it became effective,
contained any untrue statement of a material fact or omitted to state any
material fact required to be stated therein or necessary to make the statements
therein not misleading.

     In rendering its opinion, such counsel may rely as to any of the matters
listed above upon an opinion of the General Counsel of NTC, which shall be
addressed to and delivered to the Company and the Principal Stockholders at the
Closing, and may rely as to matters of fact upon such certificates of the
officers of NTC or governmental officials as such counsel deems appropriate.

     6.8  TAX OPINION.  The Company and the Principal Stockholders shall have
received the opinion of Alston & Bird to the effect that the Merger will
constitute a reorganization within the meaning of Section 368 of the Internal
Revenue Code and that no income, gain or loss will be recognized by the
stockholders of the Company to the extent that they receive solely

                                     -21-
<PAGE>
 
common stock, which opinion shall be based on such written representations from
the Company and its advisors as Alston & Bird shall reasonably require as to
factual matters of the Company.

     6.9  NO ADVERSE CHANGES.  There shall not have occurred since the date of
this Agreement (a) any material adverse change in the business, income,
operations, assets, liabilities, financial condition, or prospects of NTC, or
(2) any condition (other than general economic or competitive conditions),
event, circumstances, fact, or other occurrence that may reasonably be expected
to have or result in such a material adverse change.

     6.10  COMFORT LETTER.  The Company shall have received from Arthur
Andersen & Co. "comfort letters" dated the date of mailing of the Proxy
Statement and the Effective Date, covering matters customary to transactions
such as the Merger and in form and substance reasonably satisfactory to the
Company.

     6.11  EMPLOYMENT AGREEMENTS.  The Company shall have entered into
Employment Agreements with Messrs. Pope, Parsons, Gladstone and any other person
mutually agreed to by NTC and the Company, substantially in the form attached
hereto as Exhibit C and dated as of the Closing Date.  On the Closing Date, each
of such persons shall each be active in the management of the Company and
capable of performing their duties under their respective Employment Agreements.

     6.12  OTHER DOCUMENTS.  The Company and the Principal Stockholders shall
have received at the Closing all such other customary documents, certificates,
or instruments as it may have reasonably requested evidencing compliance by NTC
and Merger Co. with the terms and conditions of this Agreement.


                                  ARTICLE VII
                   SURVIVAL OF REPRESENTATIONS AND INDEMNITY

     7.1  SURVIVAL OF REPRESENTATIONS.  All statements, representations,
warranties, and agreements made by the parties hereto shall survive the Closing
for a period of one year thereafter. Any investigation by any party to be
indemnified on account of breach or incorrectness of such statements,
representations, warranties and agreements shall not be a defense to a claim of
indemnification.

     7.2  INDEMNIFICATION.  The Principal Stockholders shall jointly and
severally (except as to Section 2.4 which is only given severally) indemnify NTC
and the Company against and hold them harmless from (1) any and all losses,
liabilities, claims, demands, deficiencies, causes of action, or suits (the
"Claims") arising out of or resulting from any breach or incorrectness of any of
the statements, representations, warranties, or agreements of the Company or the
Principal Stockholders contained in this Agreement or in any documents,
certificates, schedules, or exhibits delivered to NTC by it or them or on its or
their behalf, or (2) the reasonable expenses or costs incurred by NTC or the
Company, including reasonable attorneys fees, in connection with investigating,
attempting to correct, or defending against Claimsasserted against NTC or the
Company for which NTC or the Company is entitled to indemnity pursuant to the
foregoing provisions.  NTC shall give prompt notice in writing to each of the
Principal Stockholders of the facts and circumstances giving rise to any Claims
by NTC for indemnification under this Section, and the Principal Stockholders
shall not be liable under this Section 7.2 unless a Claim has been

                                     -22-
<PAGE>
 
asserted by a written notice which is served on any of the Principal
Stockholders prior to the expiration of the applicable representation or
warranty as set forth in Section 7.1 hereof.  Subject to the limitations of any
contract of insurance and such conditions as NTC shall determine to be
reasonably necessary for the protection of the interests of NTC and the Company,
NTC shall tender to the Principal Stockholders the opportunity to manage and
control any defense against any such Claim.  The assumption of management and
control shall not, itself, constitute any admission by the Principal
Stockholders of liability to NTC or the Company or to any other entity.  NTC and
the Company shall cooperate reasonably with the Principal Stockholders in the
conduct of any such defense.  NTC and the Company agree to apply to any Claim
any insurance proceeds received by them and applicable to such Claim; provided
that nothing shall impair the right of NTC to proceed with an indemnification
claim as provided in this Article VII for the full amount of the Claim; provided
further that the Principal Stockholders will be reimbursed for any portion of
the Claim paid by them hereunder for which the Company subsequently receives
insurance proceeds.  In the event a Claim hereunder results in a tax benefit to
the indemnified party, the indemnifying party shall be entitled to a credit
against any liability thereunder in the amount by which federal and state income
taxes of the indemnified party shall be reduced by reason of any deduction or
adjustment allowed the indemnified party for any payment, settlement or
satisfaction of such Claim; provided such tax benefit takes into account any
additional federal and state income taxes payable by the indemnified party in
respect of any indemnification payments hereunder.  Notwithstanding anything to
the contrary contained in the foregoing, neither NTC nor the Company shall be
entitled to ndemnification under this Article VII until the aggregate amount of
liability suffered by NTC or the Company with respect to which NTC or the
Company is entitled to be indemnified under this Article VII exceeds $500,000,
whereupon NTC and the Company shall be entitled to indemnification hereunder for
the aggregate of all liabilities suffered in excess of $500,000.  The obligation
of the Principal Stockholders to indemnify NTC or the Company pursuant to this
Section 7.2 shall not exceed in the aggregate $8,000,000.

     7.3  INDEMNIFICATION.  NTC shall indemnify the Principal Stockholders
against and hold them harmless from (1) any and all losses, liabilities, claims,
demands, deficiencies, causes of action, or suits (the "Claims") arising out of
or resulting from any breach or incorrectness of any of the statements,
representations, warranties, or agreements of NTC or Merger Co. contained in
this Agreement or in any documents, certificates, schedules, or exhibits
delivered to the Company and the Principal Stockholders by NTC or on its behalf,
or (2) the reasonable expenses or costs incurred by the Principal Stockholders,
including reasonable attorneys fees, in connection with investigating,
attempting to correct, or defending against Claimsasserted against the Principal
Stockholders for which the Principal Stockholders are entitled to indemnity
pursuant to the foregoing provisions.  The Principal Stockholders shall give
prompt notice in writing to NTC of the facts and circumstances giving rise to
any Claims by the Principal Stockholders for indemnification under this Section
and NTC shall not be liable under this Section 7.3 unless a Claim has been
asserted by a written notice which is served on NTC prior to the expiration of
the applicable representation or warranty as set forth in Section 7.1 hereof.
Subject to the limitations of any contract of insurance and such conditions as
the Principal Stockholders shall determine to be reasonably necessary for the
protection of their interests, the Principal Stockholders shall tender to NTC
the opportunity to manage and control any defense against any such Claim.  The
assumption of management and control shall not, itself, constitute any admission
by NTC of liability to their Principal Stockholders or to any other entity.  The
Principal Stockholders shall cooperate reasonably with NTC in the conduct of any
such defense.  The Principal Stockholders agree to apply to any Claim any
insurance proceeds received by them and applicable to such Claim; provided that
nothing shall impair the right of the Principal Stockholders to proceed with an
indemnification claim

                                     -23-
<PAGE>
 
as provided in this Article VII for the full amount of the Claim; provided
further that NTC will be reimbursed for any portion of the Claim paid by it
hereunder for which any of the Principal Stockholders subsequently receives
insurance proceeds.  In the event a Claim hereunder results in a tax benefit to
the indemnified party, the indemnifying party shall be entitled to a credit
against any liability thereunder in the amount by which federal and state income
taxes of the indemnified party shall be reduced by reason of any deduction or
adjustment allowed the indemnified party for any payment, settlement or
satisfaction of such Claim; provided such tax benefit takes into account any
additional federal and state income taxes payable by the indemnified party in
respect of any indemnification payments hereunder.  Notwithstanding anything to
the contrary contained in the foregoing, the Principal Stockholders shall not be
entitled to indemnification under this Article VII until the aggregate amount of
liability suffered by the Principal Stockholders with respect to which the
Principal Stockholders are entitled to be indemnified under this Article VII
exceeds $500,000, whereupon the Principal Stockholders shall be entitled to
indemnification hereunder for the aggregate of all liabilities suffered in
excess of $500,000.  The obligation of NTC to indemnify the Principal
Stockholders pursuant to this Section 7.3 shall not exceed in the aggregate
$8,000,000.

                                  ARTICLE VIII
                                    GENERAL

     8.1  FURTHER ASSURANCES.  The parties hereto agree that at any time and
from time to time after the Closing each party will cause to be executed and
delivered to the other party such further instruments or documents as any other
party may reasonably require to give effect to the transactions contemplated
hereunder.

     8.2  EXPENSES.  The parties hereto shall each bear their respective costs
and expenses incurred in the consummation of this transaction.

     8.3  TERMINATION.  This Agreement may be terminated (a) at any time by
written agreement among NTC, the Principal Stockholders and the Company, (b)
automatically  if the Closing has not occurred by June 30, 1994 (or such later
date agreed to by the boards of directors of NTC and the Company), as a result
of the failure to satisfy any conditions to NTC's obligation to close, which
failure is  the result of a Company Material Adverse Change,  (c) automatically
upon the parties entering into a Software Licensing Agreement as contemplated by
Section 4.11 hereof, (d) subject to Section 4.12 hereof, by the Company if the
Closing Date Value of the common stock of NTC shall be less than $33 per share,
and (e) subject to Section 4.12 hereof, by NTC if the Closing Date Value of the
common stock of NTC shall be greater than $48 per share.  Termination of this
Agreement shall not serve to relieve a party of responsibility or obligation, if
any, for any breaches of this Agreement occurring prior to such termination.
Any termination of this Agreement under this Section 8.3 shall not affect any
rights accrued prior to such termination.

     8.4  CONFIDENTIAL INFORMATION.  The parties hereto each covenant that, in
the event the transactions contemplated by this Agreement are not consummated,
each such party will keep in strict confidence and return all documents
containing any information concerning the properties, business, and assets of
each other party that may have been obtained in the course of negotiations or
examination of the affairs of each other party either prior or subsequent to the
execution of this Agreement (other than such information as shall be in the
public domain or other-wise ascertainable from public or outside sources),
except to the extent that disclosure is required by judicial process or
governmental or regulatory authorities.

                                     -24-
<PAGE>
 
     8.5  NON-ASSIGNMENT.  This Agreement shall not be assignable by any party
without the written consent of the other parties.  Notwithstanding the
foregoing, NTC or Merger Co. may assign its rights hereunder to a wholly-owned
subsidiary or affiliate of NTC, but no such assignment shall relieve NTC of any
of its obligations hereunder.  Subject to the foregoing, this Agreement shall be
binding upon and inure to the benefit of the respective successors and assigns
of the parties hereto.

     8.6  NOTICES.  All notices, requests, demands, and other communications
provided for in this Agreement shall be in writing and shall be deemed to have
been given (a) when delivered in person, (b) on the business day in which it is
sent and received by facsimile, (c) the third business day after being deposited
in the United States mail, registered or certified mail (return receipt
requested), or (d) the first business day after being deposited with Federal
Express or any other recognized national overnight courier service, in each case
addressed as follows:

          (i)  If to the Company or the Principal Stockholders addressed to:
 
               Hazlehurst & Associates, Inc.
               400 Perimeter Center Terrace
               Suite 850
               Atlanta, Georgia 30346
               Attention: James G. Pope, President
               Telecopy:  (404) 512-6230


               with a copy to:

               Alston & Bird
               One Atlantic Center
               1201 West Peachtree Street
               Atlanta, Georgia 30309-3429
               Attention: Alex Patterson
               Telecopy:  (404) 881-7777


         (ii)  If to NTC or Merger Co., addressed to:

               NORTHERN TRUST CORPORATION
               50 South LaSalle Street
               Chicago, Illinois 60675
               Attention:  Peter L. Rossiter
                           Executive Vice President, General Counsel and 
                             Secretary
               Telecopy:  (312) 630-1596

                                     -25-
<PAGE>
 
               with a copy to:

               Gary L. Mowder
               SCHIFF HARDIN & WAITE
               7200 Sears Tower
               Chicago, Illinois 60606
               Telecopy:  (312) 258-5600

     8.7  SPECIFIC PERFORMANCE.  The parties agree that there is no adequate
remedy at law for breach of the obligations contained in this Agreement and
agree that such obligations shall be enforceable by specific performance and
injunctive relief, without the need to post bond, in the event of such breach.

     8.8  COUNTERPARTS.  This Agreement may be executed in any number of
counterparts with the same effect as if the signatures to each counterpart were
upon the same instrument.

     8.9  ENTIRE AGREEMENT.  This Agreement, the schedules and agreements
delivered pursuant hereto set forth the entire understanding of the parties and
supersede all prior agreements, arrangements, and communications, whether oral
or written, and this Agreement shall not be modified or amended other than by
written agreement of the parties hereto.  Captions appearing in this Agreement
are for convenience only and shall not be deemed to explain, limit, or amplify
the provisions hereof.

     8.10  SEVERABILITY.  In the event that a court of competent jurisdiction
shall finally determine that any provision of this Agreement or any portion
thereof is unlawful or unenforceable, such provision or portion thereof shall be
deemed to be severed from this Agreement, and every other provision and portion
thereof that is not invalidated by such determination shall remain in full force
and effect.  To the extent that a provision is deemed unenforceable by virtue of
its scope but may be made enforceable by limitation thereof, such provision
shall be enforceable to the fullest extent permitted under the laws and public
policies of the state whose laws are deemed to govern enforceability.

     8.11  GOVERNING LAW.  This Agreement shall be governed by and construed in
accordance with the laws of the State of Delaware, without giving effect to the
conflicts of laws principles thereof.

                                     -26-
<PAGE>
 
     IN WITNESS WHEREOF, Northern Trust Corporation, Hazlehurst Merger
Corporation, Hazlehurst & Associates, Inc. and the Principal Stockholders have
executed this Agreement and Plan of Reorganization as of the day and year first
written above.


NORTHERN TRUST CORPORATION               HAZLEHURST & ASSOCIATES, INC.
 a Delaware Corporation                   a Delaware Corporation


    
By: /s/ William A. Osborne               By: /s/ James G. Pope
    -------------------------                ----------------------------
Title:  President                        Title:  President
       ----------------------                   -------------------------

HAZLEHURST MERGER CORPORATION
 a  Delaware Corporation



By: /s/ Jeffrey H. Wessel            
    -------------------------
Title:  President
       ----------------------            



PRINCIPAL STOCKHOLDERS OF                NUMBER OF SHARES OWNED
HAZLEHURST & ASSOCIATES, INC.



  /s/ David M. Gladstone                          26,490
  ----------------------------                 ------------
      David M. Gladstone


 
  /s/ R. David Parsons                            26,490
  ----------------------------                 ------------
      R. David Parsons


 
  /s/ James G. Pope                               26,490
  ----------------------------                 ------------
      James G. Pope

<PAGE>
 
              ADDITIONAL SIGNATURE PAGE FOR AGREEMENT AND PLAN OF
                  REORGANIZATION DATED AS OF DECEMBER 12, 1993


The undersigned stockholders of the Company are executing this Agreement and
Plan of Reorganization for the sole purpose of stating their agreement to be
liable under and bound by Section 7.2 hereof as though they were also Principal
Stockholders, and further each of the undersigned represents that he is the
owner of the number of shares of the Company set forth beneath his signature.



                                        /s/ T. Ray McKinney
                                       -------------------------
                                       T. RAY MCKINNEY
                                       No. Shares Owned:  5401
                                                          ----
                                       Address:  8420 Lazy Oaks Court
                                                 Dunwoody, Georgia 30350



                                        /s/ Cynthia Jeness
                                       -------------------------
                                       CYNTHIA JENESS
                                       No. Shares Owned:  5300
                                                          ----
                                       Address:  329 Robin Hood Road
                                                 Atlanta, Georgia 30309



                                        /s/ Barry J. Young
                                       -------------------------
                                       BARRY J. YOUNG
                                       No. Shares Owned:  2000
                                                          ----
                                       Address:  5546 Asheforde Way
                                                 Marietta, Georgia 30068



                                        /s/ Joe W. Sullivan, Jr.
                                       -------------------------
                                       JOE W. SULLIVAN, JR.
                                       No. Shares Owned:  1167
                                                          ----
                                       Address:  457 Michael Drive
                                                 Alpharetta, Georgia 30201




<PAGE>
 
                                                                      EXHIBIT A


                          AGREEMENT AND PLAN OF MERGER
                                  BY AND AMONG
                           NORTHERN TRUST CORPORATION
                         HAZLEHURST MERGER CORPORATION
                                      AND
                         HAZLEHURST & ASSOCIATES, INC.


     AGREEMENT AND PLAN OF MERGER (hereinafter called this "Merger Agreement"),
dated as of ___________, 1994, by and among Northern Trust Corporation, a
Delaware corporation ("NTC"), Hazlehurst Merger Corporation, a Delaware
corporation, the shares of which are all owned directly or indirectly by NTC
("Merger Co."), and Hazlehurst & Associates, Inc., a Delaware corporation (the
"Company") (Merger Co. and the Company sometimes being hereinafter collectively
referred to as the "Constituent Corporations").

                                    RECITALS

     WHEREAS, the respective Boards of Directors of NTC, Merger Co., and the
Company deem the merger of the Merger Co. with and into the Company as provided
herein (the "Merger") and in an Agreement and Plan of Reorganization dated as of
December 12, 1993, among the parties hereto and certain stockholders of the
Company (the "Reorganization Agreement") advisable and in the best interests of
their respective corporations and stockholders; and the respective Boards of
Directors of NTC, Merger Co. and the Company, by resolutions duly adopted, have
approved this Merger Agreement and the Merger, and the Company has directed that
it be submitted to its stockholders for adoption; and

     WHEREAS, the parties hereto desire and intend that the Merger qualify as a
reorganization in accordance with Sections 368(a)(1)(A) and 368(a)(2)(E) of the
Internal Revenue Code of 1986, as amended.

                                   AGREEMENTS

     NOW, THEREFORE, in order to prescribe (a) the terms and conditions of the
Merger, (b) the mode of carrying the same into effect, (c) the manner and basis
of converting and exchanging the shares of common stock, par value $0.0125 per
share, of the Company (the "Company Common Stock") into and for shares of common
stock, par value $1.662/3 per share, of NTC ("NTC Common Stock"), and (d) such
other details and provisions as are deemed necessary or desirable; and in
consideration of the premises and the mutual covenants and agreements herein
contained, the parties hereto hereby agree, subject to the terms and conditions
hereinafter set forth, as follows:

                                   ARTICLE I

                           THE MERGER; EFFECTIVE TIME

     1.1  The Merger.  Subject to the terms and conditions of the Reorganization
Agreement, at the Effective Time (as defined in Section 1.2) Merger Co. shall be
merged with and into the Company and the separate corporate existence of Merger
Co. shall thereupon cease.  The

       
<PAGE>
 
Company shall be the surviving corporation in the Merger (sometimes hereinafter
referred to as the "Surviving Corporation") and shall continue to be governed by
the laws of the State of Delaware, and the separate corporate existence of the
Company with all its rights, privileges, immunities and franchises shall
continue unaffected by the Merger.  The Merger shall have the effects specified
in the General Corporation Law of the State of Delaware (the "DGCL").

     1.2  Effective Time.  The effective time of the Merger (the "Effective
Time") shall be the time and date on which a certificate of merger meeting the
requirements of Section 252 of the DGCL is filed with the Secretary of State of
the State of Delaware which filing shall take place as soon as practicable
following fulfillment or waiver of the conditions specified in the
Reorganization Agreement.

     1.3  Subsequent Actions.  If, at any time after the Effective Time, the
Surviving Corporation shall consider or be advised that any deeds, bills of
sale, assignments, assurances or any other actions or things are necessary or
desirable to vest, perfect or confirm of record or otherwise in the Surviving
Corporation its right, title or interest in, to or under any of the rights,
properties or assets of either of the Constituent Corporations acquired or to be
acquired by the Surviving Corporation as a result of, or in connection with, the
Merger or otherwise to carry out this Merger Agreement, the officers and
directors of the Surviving Corporation shall be authorized to execute and
deliver, in the name and on behalf of each of the Constituent Corporations or
otherwise, all such deeds, bills of sale, assignments and assurances and to take
and do, in the name and on behalf of each of the Constituent Corporations or
otherwise, all such other actions and things as may be necessary or desirable to
vest, perfect or confirm any and all right, title and interest in, to or under
such rights, properties or assets in the Surviving Corporation or otherwise to
carry out this Merger Agreement.

                                   ARTICLE II

                    CERTIFICATE OF INCORPORATION AND BY-LAWS
                          OF THE SURVIVING CORPORATION

     2.1  Certificate of Incorporation.  The Certificate of Incorporation of the
Company, as in effect immediately prior to the Effective Time, shall be the
Certificate of Incorporation of the Surviving Corporation, until duly amended in
accordance with the terms thereof and the DGCL.

     2.2  By-Laws.  The By-laws of Merger Co., as in effect immediately prior to
the Effective Time, shall be the By-Laws of the Surviving Corporation until duly
amended in accordance with the terms thereof and the DGCL.

                                  ARTICLE III

                             OFFICERS AND DIRECTORS
                          OF THE SURVIVING CORPORATION

     3.1  Directors.  The directors of Merger Co. immediately prior to the
Effective Time, and Mr. James G. Pope, shall be, from and after the Effective
Time, the directors of the Surviving Corporation until their respective
successors shall have been duly elected or appointed and qualified or until
their earlier death, resignation or removal in accordance with the Surviving
Corporation's Certificate of Incorporation and By-Laws.

                                      -2-

                                        
  
<PAGE>
 
     3.2  Officers.  The officers of the Company immediately prior to the
Effective Time, and Dennis Sain, shall be, from and after the Effective Time,
the officers of the Surviving Corporation until their respective successors
shall have been duly elected or appointed and qualified or until their earlier
death, resignation or removal in accordance with the Surviving Corporation's
Certificate of Incorporation and By-Laws.

                                   ARTICLE IV

                         CONVERSION OR CANCELLATION OF
                              SHARES IN THE MERGER

     4.1  Conversion or Cancellation of Shares.  At the Effective Time, by
virtue of the Merger and without any action on the part of the holder of any
share of common stock, par value $1.00 per share, of Merger Co. (the "Merger Co.
Common Stock") or any share of Company Common Stock, the following shall occur:

     (a)  Each issued and outstanding share of Merger Co. Common Stock shall at
   the Effective Time be converted into one share of stock, par value $.0125 per
   share, of the Surviving Corporation.

     (b)  All validly issued and outstanding shares of Company Common Stock at
   the Effective Time shall be converted, by virtue of the Merger, into the
   right to receive such number of shares of NTC Common Stock as shall have a
   market value equal to $22,500,000 determined on the basis of the unweighted
   average of the last-sale prices for the NTC Common Stock, as reported by the
   National Association of Securities Dealers Automated Quotation System for the
   twenty (20) trading days ending on the fifth trading day preceding the
   Effective Time (the "Closing Date Value"), but not more than 681,818 nor
   fewer than 468,750 shares (unless the Company shall so elect pursuant to
   Section 4.12 of the Reorganization Agreement) of NTC Common Stock (before
   giving effect to the payment of cash in lieu of fractional shares or to any
   reduction in the number of shares issuable in the Merger as a result of
   appraisal rights).  Each share of Company Common Stock shall be converted
   into the right to receive that number of shares of NTC Common Stock equal to
   the quotient obtained by dividing the total number of shares of NTC Common
   Stock issuable in the Merger, determined in accordance with the preceding
   sentence, by the total number of shares of Company Common Stock outstanding
   as of the Effective Time.  Any holder of shares of Company Common Stock who
   is entitled under this paragraph to receive a fraction of a share of NTC
   Common Stock shall receive in lieu thereof cash in an amount equal to the
   product obtained by multiplying such fraction times the Closing Date Value. 
   Notwithstanding the foregoing and subject to Section 4.12 of the
   Reorganization Agreement, the Merger may be abandoned by the Company if the
   Closing Date Value of the NTC Common Stock is less than $33 per share, and
   the Merger may be abandoned by NTC if the Closing Date Value of the NTC
   Common Stock is greater than $48 per share.

     (c)  Each share of Company Common Stock held by the Company as treasury
   stock shall be canceled and shall cease to exist, and no consideration
   shall be paid or delivered in exchange thereof under this Merger
   Agreement; and

                                      -3-

  
<PAGE>
 
     (d)  Each issued and outstanding share of Company Common Stock, the holders
   of which have validly demanded appraisal rights pursuant to Section 262 of
   the DGCL ("Section 262"), and shall not have effectively withdrawn or lost
   such right to receive an appraisal of his or her shares of Company Common
   Stock, shall not be converted into or represent a right to receive the
   consideration hereunder, but the holder thereof shall be entitled only to
   such rights as are granted by Section 262.  Each stockholder who becomes
   entitled, pursuant to the provisions of Section 262, to payment for his or
   her shares of Company Common Stock, shall receive payment therefor from the
   Surviving Corporation (but only after the amount thereof shall have been
   agreed upon or finally determined pursuant to such provisions), and such
   Company Common Stock shall be canceled.

     (e)  If any holder of shares of Company Common Stock who demands appraisal
   under Section 262 shall effectively withdraw or lose (through failure to
   perfect or otherwise) his or her appraisal rights at or prior to the vote on
   this Merger Agreement taken at the special meeting of the Company's
   stockholders to be called for such purpose each such share of Company Common
   Stock shall be converted into the consideration hereinabove provided.

                                   ARTICLE V

                      SURRENDER OF AND PAYMENT FOR SHARES
                            OF COMPANY COMMON STOCK

     5.1  At or prior to the end of the first business day after the day of the
Effective Time, the Company shall deliver to NTC a list setting forth all
holders of record of the Company Common Stock (the "Final Stockholder List").
As soon as practicable after receipt of the Final Stockholder List, an exchange
agent to be appointed by NTC (the "Exchange Agent") shall send or cause to be
sent to each holder of record of each certificate (each "Company Certificate")
evidencing shares of Company Common Stock, other than shares of Company Common
Stock which are to be canceled pursuant to Section 4.1(c) or this Merger
Agreement or of which the holder has asserted dissenters' rights pursuant to
Section 262, (i) a form letter of transmittal which shall specify that delivery
shall be effected, and risk of loss of, and title to, each Company Certificate
shall pass, only upon delivery of such Company Certificate (or of a lost
certificate affidavit in a form reasonably acceptable to NTC) to the Exchange
Agent, and (ii) instructions for use in effecting the surrender of such Company
Certificates in exchange for certificates evidencing the number of shares of NTC
Common Stock and cash in lieu of fractional shares, if any, to which the holder
of a Company Certificate is entitled under Section 4.1(b) of this Merger
Agreement.  Upon surrender of each Company Certificate to the Exchange Agent for
cancellation (or receipt by the Exchange Agent of a lost certificate bond in a
form reasonably acceptable to NTC), together with a duly executed copy of the
letter of transmittal, the holder of each Company Certificate shall be entitled
to receive in exchange therefor cash in lieu of fractional shares, if any, and a
certificate or certificates evidencing the number of shares of NTC Common Stock
to which the holder of such Company Certificate is entitled under Section 4.1(b)
of this Merger Agreement, and each Company Certificate so surrendered shall
forthwith be canceled.  All payments of cash shall be made by check drawn to the
order of the holder of record or other person specified in the letter of
transmittal in accordance with the requirements thereof.

                                      -4-

  
<PAGE>
 
     5.2  Until a Company Certificate is surrendered and exchanged, each such
outstanding Company Certificate shall for all purposes evidence the right to
receive the number of shares of NTC Common Stock and cash in lieu of fractional
shares, if any, to which the holder of such Company Certificate is entitled
under Section 4.1(b) of this Merger Agreement.  Whenever a dividend is declared
by NTC on NTC Common Stock after the Effective Time, the declaration shall
include dividends on all shares of NTC Common Stock issuable under this Merger
Agreement but no former stockholder of the Company will be entitled to receive
his or her distribution of such dividends until physical exchange of his or her
Company Certificates pursuant to Article V of this Merger Agreement shall have
been effected.  Upon physical exchange of his or her Company Certificate, any
such person shall be entitled to receive from NTC an amount equal to all such
dividends (without interest thereon and less the amount of taxes, if any, which
may have been imposed or paid thereon) declared, and for which the payment has
occurred, on the shares of NTC Common Stock issued in exchange for the shares of
Company Common Stock evidenced by such Company Certificate, subject to any
applicable abandoned property or similar laws.

     5.3  As of the Effective Time, there shall be no further registration or
transfers on the stock transfer books of the Company of those shares of Company
Common Stock which were outstanding immediately prior to the Effective Time.
If, after the Effective Time, Company Certificates representing such shares are
presented to NTC or the Surviving Corporation, such Company Certificates shall
be canceled and exchanged for certificates representing shares of NTC Common
Stock and any cash in lieu of fractional shares as provided in this Merger
Agreement.

     5.4  If any certificates representing shares of NTC Common Stock are to be
issued in the name of, or any cash in lieu of fractional shares is to be paid
to, a person (the "Transferee") other than the holder of record of the Company
Certificate surrendered in exchange therefor, it shall be a condition of the
issuance or payment thereof that the Company Certificate so surrendered shall be
properly endorsed, accompanied by any documents required to evidence and effect
the transfer of the Company Common Stock to the Transferee and otherwise be in
proper form for such transfer, and that the person requesting such exchange
shall pay to the Exchange Agent any transfer or other taxes required by reason
of such transfer or shall establish to the satisfaction of the Exchange Agent
that such tax has been paid or is not applicable.

                                   ARTICLE VI

                                  TERMINATION

     6.1  Automatic Termination.  This Agreement shall be automatically
terminated if the Reorganization Agreement is validly terminated pursuant to the
provisions thereof.  This Agreement may not be terminated except in accordance
with the foregoing sentence.

     6.2  Effect of Termination.  If terminated as provided in Section 6.1, this
Agreement shall forthwith become wholly void and of no further force and effect.

                                  ARTICLE VII

                                 MISCELLANEOUS

     7.1  Modification or Amendment.  Subject to the applicable provisions of
the DGCL and the provisions of the Reorganization Agreement, the parties hereto
may modify or

                                      -5-

  
<PAGE>
 
amend this Merger Agreement, by written agreement executed and delivered by duly
authorized officers of the respective parties.

     7.2  Counterparts.  For the convenience of the parties hereto, this Merger
Agreement may be executed in any number of counterparts, each such counterpart
being deemed to be an original instrument, and all such counterparts shall
together constitute the same agreement.

     7.3  Governing Law.  This Merger Agreement shall be governed by, and
construed and enforced in accordance with, the internal laws of the State of
Delaware without giving effect to the conflict of laws principles thereof.

     IN WITNESS WHEREOF, this Merger Agreement has been duly executed and
delivered by the duly authorized officers of the parties hereto on the date
first hereinabove written.

 
                                        NORTHERN TRUST CORPORATION

ATTEST:

                                        By: ____________________________
________________________________



                                        HAZLEHURST MERGER CORPORATION

ATTEST:

                                        By: ____________________________
________________________________



                                        HAZLEHURST & ASSOCIATES, INC.

ATTEST:

                                        By: _____________________________
________________________________

                                      -6-

  
<PAGE>
 
                                                                       EXHIBIT B


                           [FORM OF AFFILIATE LETTER]


                             _______________, 1994



Northern Trust Corporation
50 South LaSalle Street
Chicago, IL  60675

Ladies and Gentlemen:

     Reference is made to the Agreement and Plan of Reorganization dated as of
December ___, 1993, by and among Northern Trust Corporation, a Delaware
corporation ("NTC"), Hazlehurst Merger Corporation, a Delaware corporation
("Merger Co."), and Hazlehurst & Associates, Inc., a Delaware corporation (the
"Company"), which provides that Merger Co. will be merged with and into the
Company (the "Merger") and the outstanding shares of common stock of the Company
("Company Common Stock") will be converted into shares of common stock of NTC
("NTC Common Stock").

     The undersigned has been advised that the issuance of shares of NTC Common
Stock to the undersigned in connection with the Merger will be registered with
the Securities and Exchange Commission (the "SEC") under the Securities Act of
1933, as amended (the "Securities Act"), on a Registration Statement on Form S-4
and that such registration will not cover any resale or other disposition of NTC
Common Stock.  The undersigned also has been advised that the undersigned may be
deemed to be an affiliate of the Company within the meaning of Rule 145 of the
rules and regulations of the SEC under the Securities Act and that the shares of
NTC Common Stock acquired by the undersigned in connection with the Merger may
only be disposed of in conformity with the provisions hereof.

     The undersigned represents and warrants to and agrees with NTC as follows:

        (a)  The undersigned shall not sell, exchange, transfer or otherwise
     dispose of any shares of NTC Common Stock received in the Merger except (i)
     at such time as a registration statement under the Securities Act covering
     sales of such NTC Common Stock is effective, (ii) within the limits, and in
     accordance with the applicable provisions of, Rule 145 under the Securities
     Act, or (iii) in a transaction which, in the opinion of counsel
     satisfactory to NTC or as described in a "no-action" or interpretive letter
     from the staff of the SEC, is not required to be registered under the
     Securities Act.  The undersigned acknowledges and agrees that NTC is under
     no obligation to register the sale, transfer or other disposition of NTC
     Common Stock by the undersigned or on his or her behalf, or to take any
     other action necessary to make an exemption from registration available.

                                      B-1

  
<PAGE>
 
Northern Trust Corporation
________________, 1994
Page 2

        (b) Notwithstanding the foregoing, the undersigned shall not sell, or in
     any other way reduce his or her risk relative to, any shares of Company
     Common Stock or of NTC Common Stock during the period commencing thirty
     days prior to the effective date of the Merger and ending on the date on
     which financial results covering at least thirty days of post-Merger
     combined operations of NTC and the Company have been published within the
     meaning of Section 201.01 of the SEC's Codification of Financial Reporting
     Policies.

        (c)  NTC shall not be bound by any attempted sale of any shares of NTC
     Common Stock by the undersigned, and NTC's transfer agent shall be given an
     appropriate stop transfer order and shall not be required to register any
     such attempted sale, unless the sale has been effected in compliance with
     the terms of this Letter Agreement.  There will be placed on the
     certificate representing the shares of NTC Common Stock issued to the
     undersigned in the Merger, or any substitutions therefor, a restrictive
     legend stating in substance:

       "THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO THE PROVISIONS
     OF RULE 145(d), PROMULGATED UNDER THE SECURITIES ACT OF 1933, AS AMENDED,
     AND MAY NOT BE SOLD, TRANSFERRED OR OTHERWISE DISPOSED OF WITHOUT
     COMPLIANCE WITH SAID RULE AND SECURITIES EXCHANGE COMMISSION ACCOUNTING
     RELEASES 130 AND 135."

        (d)  The provisions of paragraphs (a), (b) and (c) hereof shall also
     apply to any securities which may be paid as a dividend or otherwise
     distributed on or with respect to, or issued or delivered in exchange or
     substitution for, shares of NTC Common Stock received in the Merger by the
     undersigned.

        (e)  The undersigned has the capacity to enter into this Letter
     Agreement and to make the representations, warranties and agreements
     herein, and to perform the obligations of the undersigned hereunder. This
     Letter Agreement constitutes a valid and binding obligation of the
     undersigned, enforceable against the undersigned in accordance with its
     terms.  This Letter Agreement shall be binding upon, and enforceable
     against, administrators, executors, personal representatives, heirs,
     legatees and devisees of the undersigned, and any pledgee holding as
     collateral any shares of NTC Common Stock issued to the undersigned in the
     Merger.

     NTC agrees that the stop transfer instructions and legend referred to in
paragraph (c) hereof will be promptly removed upon (i) the sale, exchange,
transfer or other disposition of the NTC Common Stock received in the Merger in
full compliance with the provisions of this Letter Agreement or (ii) two years
after the date hereof, provided that, in the latter case, the undersigned is not
an affiliate of NTC.  NTC further agrees that, promptly after publication of the
financial

                                      B-2

  
<PAGE>
 
Northern Trust Corporation
________________, 1994
Page 3

results referred to in paragraph (b) above, the portion of such legend
referencing Accounting Series Releases 130 and 135 shall be removed.

     This Letter Agreement shall terminate concurrently with any termination of
the Agreement in accordance with its terms.

                                          Very truly yours,



                                          ______________________________ 
                                          [Name]

Agreed to and accepted this
___ day of ___________, 1994.


NORTHERN TRUST CORPORATION



By:  ___________________________
Title:  ________________________



                                      B-3

  
<PAGE>
 
                                                                  EXECUTION COPY



                                AMENDMENT NO. 1
                                       TO
                      AGREEMENT AND PLAN OF REORGANIZATION



     This Amendment No. 1 ("Amendment") to the Agreement and Plan of
Reorganization, among Northern Trust Corporation ("NTC"), Hazlehurst Merger
Corporation ("Merger Co."), Hazlehurst & Associates, Inc. (the "Company"), and
David M. Gladstone, R. David Parsons, and James G. Pope (collectively, the
"Principal Stockholders"), is entered into as of the 6th day of March, 1994.
Capitalized terms used and not otherwise defined herein shall have the
respective meanings ascribed to them in the Agreement (as defined herein).

                                  WITNESSETH:
                                  ---------- 
     WHEREAS, NTC, Merger Co., the Company and the Principal Stockholders are
parties to the Agreement and Plan of Reorganization dated as of December 12,
1993 (the "Agreement"); and

     WHEREAS, the parties hereto wish to amend certain provisions of the
Agreement.

     NOW, THEREFORE, in consideration of the premises and mutual agreements
herein contained, the parties hereto agree as follows:

     1.  AMENDMENTS TO THE AGREEMENT .  From and after the date hereof, the
Agreement shall be amended as follows:

     (a)  Section 1.3 shall be amended by striking the word "twenty" in the
first sentence and substituting the word "fifteen," and by striking the word
"fifth" in the first sentence and substituting the word "third."
<PAGE>
 
     (b)  Section 4.3 shall be amended by striking the words "March 7" and
substituting therefor the words "April 14."

     (c)  Conforming changes shall be made to the Agreement and Plan of Merger,
attached as Exhibit A to the Agreement, prior to the execution of such Agreement
and Plan of Merger.

     2.  BINDING EFFECT.  Each party hereby represents and warrants to the other
that this Amendment, and the Agreement as hereby amended, constitutes its legal,
valid, and binding obligation, enforceable against such party in accordance with
its terms.

     3.  REFERENCES.  All references in the Agreement to "this Agreement,"
"hereof," "herein," "hereunder," or words of similar import shall hereafter
refer to the Agreement as amended hereby.

     4.  GOVERNING LAW.  This Agreement shall be governed by and construed in
accordance with the laws of the State of Delaware, without giving effect to the
conflicts of law principles thereof.

     5.  COUNTERPARTS.  This Amendment may be executed in any number of
counterparts with the same effect as if the signatures to each counterpart were
upon the same instrument.

     6.  LIMITED EFFECT.  Except as expressly modified or amended herein, the
Agreement shall continue to be, and shall remain, in full force and effect in
accordance with its terms, and the execution, delivery, and effectiveness of
this Amendment shall not operate as a waiver of any right, power, or remedy of
any party, nor constitute a waiver of any of the provisions of the Agreement.

     IN WITNESS WHEREOF, Northern Trust Corporation, Hazlehurst Merger
Corporation, Hazlehurst & Associates, Inc., and the Principal Stockholders have
executed this

                                      -2-
<PAGE>
  
Amendment No. 1 to the Agreement and Plan of Reorganization as of the day and
year first written above.

NORTHERN TRUST CORPORATION             HAZLEHURST & ASSOCIATES, INC.
 a Delaware Corporation                 a Delaware Corporation


          /s/ William A. Osborne                     /s/ James G. Pope        
By:  ________________________________  By:  ___________________________________
          President                              President          
Title:  _____________________________  Title:  ________________________________


HAZLEHURST MERGER CORPORATION
 a  Delaware Corporation


           /s/ Jeffrey H. Wessel
By:  ________________________________
              President
Title:  _____________________________



PRINCIPAL STOCKHOLDERS OF                        NUMBER OF SHARES OWNED
HAZLEHURST & ASSOCIATES, INC.


   /s/ David M. Gladstone                                26,490
- ----------------------------                        ----------------
       David M. Gladstone


   /s/ R. David Parsons                                  26,490
- ----------------------------                        ----------------
       R. David Parsons


   /s/ James G. Pope                                     26,490
- ----------------------------                        ----------------
       James G. Pope



C:\TEXT\JGK\NORTHERN\HAZLE\AMENDMEN.1

                                      -3-
<PAGE>
 
                                                                      APPENDIX B
                                                                  (REVISED AS OF
                                                                  MARCH 6, 1993)
                          AGREEMENT AND PLAN OF MERGER
                                  BY AND AMONG
                           NORTHERN TRUST CORPORATION
                         HAZLEHURST MERGER CORPORATION
                                      AND
                         HAZLEHURST & ASSOCIATES, INC.


          AGREEMENT AND PLAN OF MERGER (hereinafter called this "Merger
Agreement"), dated as of _________________, 1994, by and among Northern Trust
Corporation, a Delaware corporation ("NTC"), Hazlehurst Merger Corporation, a
Delaware corporation, the shares of which are all owned directly or indirectly
by NTC ("Merger Co."), and Hazlehurst & Associates, Inc., a Delaware corporation
(the "Company") (Merger Co. and the Company sometimes being hereinafter
collectively referred to as the "Constituent Corporations").

                                    RECITALS

          WHEREAS, the respective Boards of Directors of NTC, Merger Co., and
the Company deem the merger of the Merger Co. with and into the Company as
provided herein (the "Merger") and in an Agreement and Plan of Reorganization
dated as of December 12, 1993, as amended as of March 6, 1994, among the parties
hereto and certain stockholders of the Company (the "Reorganization Agreement")
advisable and in the best interests of their respective corporations and, in the
case of Merger Co. and Hazlehurst, their stockholders; and the respective Boards
of Directors of NTC, Merger Co. and the Company, by resolutions duly adopted,
have approved this Merger Agreement and the Merger, and the Company and Merger
Co. each has directed that it be submitted to its stockholders for adoption; and

          WHEREAS, the parties hereto desire and intend that the Merger qualify
as a reorganization in accordance with Sections 368(a)(1)(A) and 368(a)(2)(E) of
the Internal Revenue Code of 1986, as amended.

                                   AGREEMENTS

          NOW, THEREFORE, in order to prescribe (a) the terms and conditions of
the Merger, (b) the mode of carrying the same into effect, (c) the manner and
basis of converting and exchanging the shares of common stock, par value $0.0125
per share, of the Company (the "Company Common Stock") into and for shares of
common stock, par value $1.66-2/3 per share, of NTC ("NTC Common Stock"), and
(d) such other details and provisions as are deemed necessary or desirable; and
in consideration of the premises and the mutual covenants and agreements herein
contained, the parties hereto hereby agree, subject to the terms and conditions
hereinafter set forth, as follows:

                                   ARTICLE I

                           THE MERGER; EFFECTIVE TIME

          1.1  The Merger.  Subject to the terms and conditions of the
Reorganization Agreement, at the Effective Time (as defined in Section 1.2)
Merger Co. shall be merged with and
<PAGE>
 
into the Company and the separate corporate existence of Merger Co. shall
thereupon cease.  The Company shall be the surviving corporation in the Merger
(sometimes hereinafter referred to as the "Surviving Corporation") and shall
continue to be governed by the laws of the State of Delaware, and the separate
corporate existence of the Company with all its rights, privileges, immunities
and franchises shall continue unaffected by the Merger.  The Merger shall have
the effects specified in the General Corporation Law of the State of Delaware
(the "DGCL").

          1.2  Effective Time.  The effective time of the Merger (the "Effective
Time") shall be the time and date on which a certificate of merger meeting the
requirements of Section 252 of the DGCL is filed with the Secretary of State of
the State of Delaware which filing shall take place as soon as practicable
following fulfillment or waiver of the conditions specified in the
Reorganization Agreement.

          1.3  Subsequent Actions.  If, at any time after the Effective Time,
the Surviving Corporation shall consider or be advised that any deeds, bills of
sale, assignments, assurances or any other actions or things are necessary or
desirable to vest, perfect or confirm of record or otherwise in the Surviving
Corporation its right, title or interest in, to or under any of the rights,
properties or assets of either of the Constituent Corporations acquired or to be
acquired by the Surviving Corporation as a result of, or in connection with, the
Merger or otherwise to carry out this Merger Agreement, the officers and
directors of the Surviving Corporation shall be authorized to execute and
deliver, in the name and on behalf of each of the Constituent Corporations or
otherwise, all such deeds, bills of sale, assignments and assurances and to take
and do, in the name and on behalf of each of the Constituent Corporations or
otherwise, all such other actions and things as may be necessary or desirable to
vest, perfect or confirm any and all right, title and interest in, to or under
such rights, properties or assets in the Surviving Corporation or otherwise to
carry out this Merger Agreement.

                                   ARTICLE II

                    CERTIFICATE OF INCORPORATION AND BY-LAWS
                          OF THE SURVIVING CORPORATION

          2.1  Certificate of Incorporation.  The Certificate of Incorporation
of the Company, as in effect immediately prior to the Effective Time, shall be
the Certificate of Incorporation of the Surviving Corporation, until duly
amended in accordance with the terms thereof and the DGCL.

          2.2  By-Laws.  The By-laws of Merger Co., as in effect immediately
prior to the Effective Time, shall be the By-Laws of the Surviving Corporation
until duly amended in accordance with the terms thereof and the DGCL.

                                  ARTICLE III

                             OFFICERS AND DIRECTORS
                          OF THE SURVIVING CORPORATION

          3.1  Directors.  The directors of Merger Co. immediately prior to the
Effective Time, and Mr. James G. Pope, shall be, from and after the Effective
Time, the directors of the Surviving Corporation until their respective
successors shall have been duly elected or appointed

                                      -2-
<PAGE>
 
and qualified or until their earlier death, resignation or removal in accordance
with the Surviving Corporation's Certificate of Incorporation and By-Laws.

          3.2  Officers.  The officers of the Company immediately prior to the
Effective Time, and Dennis Sain, shall be, from and after the Effective Time,
the officers of the Surviving Corporation until their respective successors
shall have been duly elected or appointed and qualified or until their earlier
death, resignation or removal in accordance with the Surviving Corporation's
Certificate of Incorporation and By-Laws.

                                   ARTICLE IV

                         CONVERSION OR CANCELLATION OF
                              SHARES IN THE MERGER

          4.1  Conversion or Cancellation of Shares.  At the Effective Time, by
virtue of the Merger and without any action on the part of the holder of any
share of common stock, par value $1.00 per share, of Merger Co. (the "Merger Co.
Common Stock") or any share of Company Common Stock, the following shall occur:

               (a) Each issued and outstanding share of Merger Co. Common Stock
          shall at the Effective Time be converted into one share of stock, par
          value $.0125 per share, of the Surviving Corporation.

               (b) All validly issued and outstanding shares of Company Common
          Stock at the Effective Time shall be converted, by virtue of the
          Merger, into the right to receive such number of shares of NTC Common
          Stock as shall have a market value equal to $22,500,000 determined on
          the basis of the unweighted average of the last-sale prices for the
          NTC Common Stock, as reported by the National Association of
          Securities Dealers Automated Quotation System for the fifteen (15)
          trading days ending on the third trading day preceding the Effective
          Time (the "Closing Date Value"), but not more than 681,818 nor fewer
          than 468,750 shares (unless the Company shall so elect pursuant to
          Section 4.12 of the Reorganization Agreement) of NTC Common Stock
          (before giving effect to the payment of cash in lieu of fractional
          shares or to any reduction in the number of shares issuable in the
          Merger as a result of appraisal rights).  Each share of Company Common
          Stock shall be converted into the right to receive that number of
          shares of NTC Common Stock equal to the quotient obtained by dividing
          the total number of shares of NTC Common Stock issuable in the Merger,
          determined in accordance with the preceding sentence, by the total
          number of shares of Company Common Stock outstanding as of the
          Effective Time.  Any holder of shares of Company Common Stock who is
          entitled under this paragraph to receive a fraction of a share of NTC
          Common Stock shall receive in lieu thereof cash in an amount equal to
          the product obtained by multiplying such fraction times the Closing
          Date Value.  Notwithstanding the foregoing and subject to Section 4.12
          of the Reorganization Agreement, the Merger may be abandoned by the
          Company if the Closing Date Value of the NTC Common Stock is less than
          $33 per share, and the Merger may be abandoned by NTC if the Closing
          Date Value of the NTC Common Stock is greater than $48 per share.

                                      -3-
<PAGE>
 
               (c) Each share of Company Common Stock held by the Company as
          treasury stock shall be canceled and shall cease to exist, and no
          consideration shall be paid or delivered in exchange thereof under
          this Merger Agreement; and

               (d) Each issued and outstanding share of Company Common Stock,
          the holders of which have validly demanded appraisal rights pursuant
          to Section 262 of the DGCL ("Section 262"), and shall not have
          effectively withdrawn or lost such right to receive an appraisal of
          his or her shares of Company Common Stock, shall not be converted into
          or represent a right to receive the consideration hereunder, but the
          holder thereof shall be entitled only to such rights as are granted by
          Section 262.  Each stockholder who becomes entitled, pursuant to the
          provisions of Section 262, to payment for his or her shares of Company
          Common Stock, shall receive payment therefor from the Surviving
          Corporation (but only after the amount thereof shall have been agreed
          upon or finally determined pursuant to such provisions), and such
          Company Common Stock shall be canceled.

               (e) If any holder of shares of Company Common Stock who demands
          appraisal under Section 262 shall effectively withdraw or lose
          (through failure to perfect or otherwise) his or her appraisal rights
          at or prior to the vote on this Merger Agreement taken at the special
          meeting of the Company's stockholders to be called for such purpose
          each such share of Company Common Stock shall be converted into the
          consideration hereinabove provided.

                                   ARTICLE V

                      SURRENDER OF AND PAYMENT FOR SHARES
                            OF COMPANY COMMON STOCK

          5.1  At or prior to the end of the first business day after the day of
the Effective Time, the Company shall deliver to NTC a list setting forth all
holders of record of the Company Common Stock (the "Final Stockholder List").
As soon as practicable after receipt of the Final Stockholder List, an exchange
agent to be appointed by NTC (the "Exchange Agent") shall send or cause to be
sent to each holder of record of each certificate (each "Company Certificate")
evidencing shares of Company Common Stock, other than shares of Company Common
Stock which are to be canceled pursuant to Section 4.1(c) of this Merger
Agreement or of which the holder has asserted dissenters' rights pursuant to
Section 262, (i) a form letter of transmittal which shall specify that delivery
shall be effected, and risk of loss of, and title to, each Company Certificate
shall pass, only upon delivery of such Company Certificate (or of a lost
certificate affidavit in a form reasonably acceptable to NTC) to the Exchange
Agent, and (ii) instructions for use in effecting the surrender of such Company
Certificates in exchange for certificates evidencing the number of shares of NTC
Common Stock and cash in lieu of fractional shares, if any, to which the holder
of a Company Certificate is entitled under Section 4.1(b) of this Merger
Agreement.  Upon surrender of each Company Certificate to the Exchange Agent for
cancellation (or receipt by the Exchange Agent of a lost certificate bond in a
form reasonably acceptable to NTC), together with a duly executed copy of the
letter of transmittal, the holder of each Company Certificate shall be entitled
to receive in exchange therefor cash in lieu of fractional shares, if any, and a
certificate or certificates evidencing the number of shares of NTC Common Stock
to which the holder of such Company Certificate is entitled under Section 4.1(b)
of this Merger Agreement, and each Company Certificate so surrendered shall
forthwith be canceled.  All payments of cash shall be made by check

                                      -4-
<PAGE>
 
drawn to the order of the holder of record or other person specified in the
letter of transmittal in accordance with the requirements thereof.

          5.2  Until a Company Certificate is surrendered and exchanged, each
such outstanding Company Certificate shall for all purposes evidence the right
to receive the number of shares of NTC Common Stock and cash in lieu of
fractional shares, if any, to which the holder of such Company Certificate is
entitled under Section 4.1(b) of this Merger Agreement.  Whenever a dividend is
declared by NTC on NTC Common Stock after the Effective Time, the declaration
shall include dividends on all shares of NTC Common Stock issuable under this
Merger Agreement but no former stockholder of the Company will be entitled to
receive his or her distribution of such dividends until physical exchange of his
or her Company Certificates pursuant to Article V of this Merger Agreement shall
have been effected.  Upon physical exchange of his or her Company Certificate,
any such person shall be entitled to receive from NTC an amount equal to all
such dividends (without interest thereon and less the amount of taxes, if any,
which may have been imposed or paid thereon) declared, and for which the payment
has occurred, on the shares of NTC Common Stock issued in exchange for the
shares of Company Common Stock evidenced by such Company Certificate, subject to
any applicable abandoned property or similar laws.

          5.3  As of the Effective Time, there shall be no further registration
or transfers on the stock transfer books of the Company of those shares of
Company Common Stock which were outstanding immediately prior to the Effective
Time.  If, after the Effective Time, Company Certificates representing such
shares are presented to NTC or the Surviving Corporation, such Company
Certificates shall be canceled and exchanged for certificates representing
shares of NTC Common Stock and any cash in lieu of fractional shares as provided
in this Merger Agreement.

          5.4  If any certificates representing shares of NTC Common Stock are
to be issued in the name of, or any cash in lieu of fractional shares is to be
paid to, a person (the "Transferee") other than the holder of record of the
Company Certificate surrendered in exchange therefor, it shall be a condition of
the issuance or payment thereof that the Company Certificate so surrendered
shall be properly endorsed, accompanied by any documents required to evidence
and effect the transfer of the Company Common Stock to the Transferee and
otherwise be in proper form for such transfer, and that the person requesting
such exchange shall pay to the Exchange Agent any transfer or other taxes
required by reason of such transfer or shall establish to the satisfaction of
the Exchange Agent that such tax has been paid or is not applicable.

                                   ARTICLE VI

                                  TERMINATION

          6.1  Automatic Termination.  This Agreement shall be automatically
terminated if the Reorganization Agreement is validly terminated pursuant to the
provisions thereof.  This Agreement may not be terminated except in accordance
with the foregoing sentence.

          6.2  Effect of Termination.  If terminated as provided in Section 6.1,
this Agreement shall forthwith become wholly void and of no further force and
effect.

                                      -5-
<PAGE>
 
                                  ARTICLE VII

                                 MISCELLANEOUS

          7.1  Modification or Amendment.  Subject to the applicable provisions
of the DGCL and the provisions of the Reorganization Agreement, the parties
hereto may modify or amend this Merger Agreement, by written agreement executed
and delivered by duly authorized officers of the respective parties.

          7.2  Counterparts.  For the convenience of the parties hereto, this
Merger Agreement may be executed in any number of counterparts, each such
counterpart being deemed to be an original instrument, and all such counterparts
shall together constitute the same agreement.

          7.3  Governing Law.  This Merger Agreement shall be governed by, and
construed and enforced in accordance with, the internal laws of the State of
Delaware without giving effect to the conflict of laws principles thereof.

          IN WITNESS WHEREOF, this Merger Agreement has been duly executed and
delivered by the duly authorized officers of the parties hereto on the date
first hereinabove written.

 
                                           NORTHERN TRUST CORPORATION

ATTEST:

                                      By:  ____________________________________
________________________________



                                           HAZLEHURST MERGER CORPORATION

ATTEST:

                                      By:  ____________________________________
________________________________



                                           HAZLEHURST & ASSOCIATES, INC.

ATTEST:

                                      By:  ____________________________________
________________________________

                                      -6-
<PAGE>
 
                                                                      Appendix C


                     TITLE 8, CHAPTER 1, SECTION 262 OF THE
                   DELAWARE GENERAL CORPORATION LAW RELATING
                 TO APPRAISAL RIGHTS OF DISSENTING STOCKHOLDERS
                 ----------------------------------------------


SECTION 262.  (a) Any stockholder of a corporation of this State who holds
shares of stock on the date of the making of a demand pursuant to subsection (d)
of this section with respect to such shares, who continuously holds such shares
through the effective date of the merger or consolidation, who has otherwise
complied with subsection (d) of this section and who has neither voted in favor
of the merger or consolidation nor consented thereto in writing pursuant to
(S)228 of this title shall be entitled to an appraisal by the Court of Chancery
of the fair value of his shares of stock under the circumstances described in
subsections (b) and (c) of this section.  As used in this section, the word
"stockholder" means a holder of record of stock in a stock corporation and also
a member of record of a nonstock corporation; the words "stock" and "share" mean
and include what is ordinarily meant by those words and also membership or
membership interest of a member of a nonstock corporation.

     (b)  Appraisal rights shall be available for the shares of any class or
series of stock of a constituent corporation in a merger or consolidation to be
effected pursuant to (S)251, 252, 254, 257, 258,  263 or 264 of this title:

          (1)  Provided, however, that no appraisal rights under this section
shall be available for the shares of any class or series of stock which, at the
record date fixed to determine the stockholders entitled to receive notice of
and to vote at the meeting of stockholders to act upon the agreement of merger
or consolidation, were either (i) listed on a national securities exchange or
designated as a national market system security on an interdealer quotation
system by the National Association of Securities Dealers, Inc. or (ii) held of
record by more than 2,000 stockholders; and further provided that no appraisal
rights shall be available for any shares of stock of the constituent corporation
surviving a merger if the merger did not require for its approval the vote of
the stockholders of the surviving corporation as provided in subsection (f) of
(S)251 of this title.

          (2)  Notwithstanding paragraph (1) of this subsection, appraisal
rights under this section shall be available for the shares of any class or
series of stock of a constituent corporation if the holders thereof are required
by the terms of an agreement of merger or consolidation pursuant to (S)(S)251,
252, 254, 257, 258, 263 and 264 of this title to accept for such stock anything
except:

     a.   Shares of stock of the corporation surviving or resulting from such
merger or consolidation;

     b.   Shares of stock of any other corporation which at the effective date
of the merger or consolidation will be either listed on a national securities
exchange or designated as a national market system security on an interdealer
quotation system by the National Association of Securities Dealers, Inc. or held
of record by more than 2,000 stockholders;

     c.   Cash in lieu of fractional shares of the corporations described in the
foregoing subparagraphs a. and b. of this paragraph; or

     d.   Any combination of the shares of stock and cash in lieu of fractional
shares described in the foregoing subparagraphs a., b. and c. of this paragraph.


<PAGE>
 
          (3)  In the event all of the stock of a subsidiary Delaware
corporation party to a merger effected under (S)253 of this title is not owned
by the parent corporation immediately prior to the merger, appraisal rights
shall be available for the shares of the subsidiary Delaware corporation.
                
     (c)  Any corporation may provide in its certificate of incorporation
that appraisal rights under this section shall be available for the shares of
any class or series of its stock as a result of an amendment to its certificate
of incorporation, any merger or consolidation in which the corporation is a
constituent corporation or the sale of all or substantially all of the assets of
the corporation.  If the certificate of incorporation contains such a provision,
the procedures of this section, including those set forth in subsections (d) and
(e) of this section, shall apply as nearly as is practicable.

     (d)  Appraisal rights shall be perfected as follows:

          (1)  If a proposed merger or consolidation for which appraisal rights
are provided under this section is to be submitted for approval at a meeting of
stockholders, the corporation, not less than 20 days prior to the meeting, shall
notify each of its stockholders who was such on the record date for such meeting
with respect to shares for which appraisal rights are available pursuant to
subsections (b) or (c) hereof that appraisal rights are available for any or all
of the shares of the constituent corporations, and shall include in such notice
a copy of this section.  Each stockholder electing to demand the appraisal of
his shares shall deliver to the corporation, before the taking of the vote on
the merger or consolidation, a written demand for appraisal of his shares.  Such
demand will be sufficient if it reasonably informs the corporation of the
identity of the stockholder and that the stockholder intends thereby to demand
the appraisal of his shares.  A proxy or vote against the merger or
consolidation shall not constitute such a demand.  A stockholder electing to
take such action must do so by a separate written demand as herein provided.
Within 10 days after the effective date of such merger or consolidation, the
surviving or resulting corporation shall notify each stockholder of each
constituent corporation who has complied with this subsection and has not voted
in favor of or consented to the merger or consolidation of the date that the
merger or consolidation has become effective; or

          (2)  If the merger or consolidation was approved pursuant to (S)228 or
253 of this title, the surviving or resulting corporation, either before the
effective date of the merger or consolidation or within 10 days thereafter,
shall notify each of the stockholders entitled to appraisal rights of the
effective date of the merger or consolidation and that appraisal rights are
available for any or all of the shares of the constituent corporation, and shall
include in such notice a copy of this section.  The notice shall be sent by
certified or registered mail, return receipt requested, addressed to the
stockholder at his address as it appears on the records of the corporation.  Any
stockholder entitled to appraisal rights may, within 20 days after the date of
mailing of the notice, demand in writing from the surviving or resulting
corporation the appraisal of his shares.  Such demand will be sufficient if it
reasonably informs the corporation of the identity of the stockholder and that
the stockholder intends thereby to demand the appraisal of his shares.

     (e)  Within 120 days after the effective date of the merger or
consolidation, the surviving or resulting corporation or any stockholder who has
complied with subsections (a) and (d) hereof and who is otherwise entitled to
appraisal rights, may file a petition in the Court of Chancery demanding a
determination of the value of the stock of all such stockholders.
Notwithstanding the foregoing, at any time within 60 days after the effective
date of the merger or consolidation, any stockholder shall have the right to
withdraw his demand for appraisal and to accept the terms

                                      -2-
<PAGE>
 
offered upon the merger or consolidation.  Within 120 days after the effective
date of the merger or consolidation, any stockholder who has complied with the
requirements of subsections (a) and (d) hereof, upon written request, shall be
entitled to receive from the corporation surviving the merger or resulting from
the consolidation a statement setting forth the aggregate number of shares not
voted in favor of the merger or consolidation and with respect to which demands
for appraisal have been received and the aggregate number of holders of such
shares.  Such written statement shall be mailed to the stockholder within 10
days after his written request for such a statement is received by the surviving
or resulting corporation or within 10 days after expiration of the period for
delivery of demands for appraisal under subsection (d) hereof, whichever is
later.
                          
     (f)  Upon the filing of any such petition by a stockholder, service of a
copy thereof shall be made upon the surviving or resulting corporation, which
shall within 20 days after such service file in the office of the Register in
Chancery in which the petition was filed a duly verified list containing the
names and addresses of all stockholders who have demanded payment for their
shares and with whom agreements as to the value of their shares have not been
reached by the surviving or resulting corporation.  If the petition shall be
filed by the surviving or resulting corporation, the petition shall be
accompanied by such a duly verified list.  The Register in Chancery, if so
ordered by the Court, shall give notice of the time and place fixed for the
hearing of such petition by registered or certified mail to the surviving or
resulting corporation and to the stockholders shown on the list at the addresses
therein stated.  Such notice shall also be given by 1 or more publications at
least 1 week before the day of the hearing, in a newspaper of general
circulation published in the City of Wilmington, Delaware or such publication as
the Court deems advisable.  The forms of the notices by mail and by publication
shall be approved by the Court, and the costs thereof shall be borne by the
surviving or resulting corporation.

     (g)  At the hearing on such petition, the Court shall determine the
stockholders who have complied with this section and who have become entitled to
appraisal rights.  The Court may require the stockholders who have demanded an
appraisal for their shares and who hold stock represented by certificates to
submit their certificates of stock to the Register in Chancery for notation
thereon of the pendency of the appraisal proceedings; and if any stockholder
fails to comply with such direction, the Court may dismiss the proceedings as to
such stockholder.

     (h)  After determining the stockholders entitled to an appraisal, the Court
shall appraise the shares, determining their fair value exclusive of any element
of value arising from the accomplishment or expectation of the merger or
consolidation, together with a fair rate of interest, if any, to be paid upon
the amount determined to be the fair value.  In determining such fair value, the
Court shall take into account all relevant factors.  In determining the fair
rate of interest, the Court may consider all relevant factors, including the
rate of interest which the surviving or resulting corporation would have had to
pay to borrow money during the pendency of the proceeding.  Upon application by
the surviving or resulting corporation or by any stockholder entitled to
participate in the appraisal proceeding, the Court may, in its discretion,
permit discovery or other pretrial proceedings and may proceed to trial upon the
appraisal prior to the final determination of the stockholder entitled to an
appraisal.  Any stockholder whose name appears on the list filed by the
surviving or resulting corporation pursuant to subsection (f) of this section
and who has submitted his certificates of stock to the Register in Chancery, if
such is required, may participate fully in all proceedings until it is finally
determined that he is not entitled to appraisal rights under this section.

     (i)  The Court shall direct the payment of the fair value of the shares,
together with interest, if any, by the surviving or resulting corporation to the
stockholders entitled thereto.  Interest may be simple or compound, as the Court
may direct.  Payment shall be so made to each

                                      -3-
<PAGE>
                        
such stockholder, in the case of holders of uncertificated stock forthwith, and
the case of holders of shares represented by certificates upon the surrender to
the corporation of the certificates representing such stock.  The Court's decree
may be enforced as other decrees in the Court of Chancery may be enforced,
whether such surviving or resulting corporation be a corporation of this State
or of any state.
                 
     (j)  The costs of the proceeding may be determined by the Court and
taxed upon the parties as the Court deems equitable in the circumstances.  Upon
application of a stockholder, the Court may order all or a portion of the
expenses incurred by any stockholder in connection with the appraisal
proceeding, including, without limitation, reasonable attorney's fees and the
fees and expenses of experts, to be charged pro rata against the value of all
the shares entitled to an appraisal.

     (k)  From and after the effective date of the merger or consolidation,
no stockholder who has demanded his appraisal rights as provided in subsection
(d) of this section shall be entitled to vote such stock for any purpose or to
receive payment of dividends or other distributions on the stock (except
dividends or other distributions payable to stockholders of record at a date
which is prior to the effective date of the merger or consolidation); provided,
however, that if no petition for an appraisal shall be filed within the time
provided in subsection (e) of this section, or if such stockholder shall deliver
to the surviving or resulting corporation a written withdrawal of his demand for
an appraisal and an acceptance of the merger or consolidation, either within 60
days after the effective date of the merger or consolidation as provided in
subsection (e) of this section or thereafter with the written approval of the
corporation, then the right of such stockholder to an appraisal shall cease.
Notwithstanding the foregoing, no appraisal proceeding in the Court of Chancery
shall be dismissed as to any stockholder without the approval of the Court, and
such approval may be conditioned upon such terms as the Court deems just.

     (l)  The shares of the surviving or resulting corporation to which the
shares of such objecting stockholders would have been converted had they
assented to the merger or consolidation shall have the status of authorized and
unissued shares of the surviving or resulting corporation.

                                      -4-
<PAGE>
 
                                    PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 20.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.
                             
          Section 145 of the Delaware General Corporation Law and Article Eighth
of the registrant's Restated Certificate of Incorporation provide for
indemnification of the registrant's directors and officers in a variety of
circumstances, which may include liabilities under the Securities Act of 1933,
as amended.  The general effect of the provisions in the registrant's Restated
Certificate of Incorporation and under the Delaware General Corporation law is
to provide that the registrant shall indemnify its directors and officers
against all liabilities and expenses reasonably incurred in connection with the
defense or settlement of any judicial or administrative proceedings in which
they become involved by reason of their status as corporate directors or
officers, if they acted in good faith and in the reasonable belief that their
conduct was neither unlawful (in the case of criminal proceedings) nor
inconsistent with the best interests of the registrant.  With respect to legal
proceedings by or in the right of the registrant in which a director or officer
is adjudged liable for improper performance of his duty to the registrant,
indemnification is limited by such provisions to that amount which is permitted
by the court.  In addition, the registrant has purchased insurance as permitted
by Delaware law on behalf of directors, officers, employees or agents, which may
cover liabilities under the Securities Act of 1933, as amended, and the
registrant  has entered into insurance maintenance agreements with its directors
under which the registrant is obligated to maintain insurance coverage for
directors at certain levels for specified periods.

ITEM 21.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.

     (a)  The Exhibits filed herewith are set forth on the Exhibit Index filed
as part of this Registration Statement at page II-5.

     (b)  Not applicable.

     (c)  Not applicable.

ITEM 22.  UNDERTAKINGS

          The undersigned registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Securities Exchange Act of 1934 (and, where applicable, each filing of an
employee benefit plan's annual report pursuant to Section 15(d) of the
Securities Exchange Act of 1934) that is incorporated by reference in the
registration statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

          The undersigned registrant hereby undertakes as follows:  that prior
to any public reoffering of the securities registered hereunder through use of a
prospectus which is a part of this registration statement, by any person or
party who is deemed to be an underwriter within the meaning of Rule 145(c), the
issuer undertakes that such reoffering prospectus will contain the

                                     II-1

<PAGE>
 
information called for by the applicable registration form with respect to
reofferings by persons who may be deemed underwriters, in addition to the
information called for by the other items of the applicable form.
                                
          The registrant undertakes that every prospectus (i) that is filed
pursuant to the paragraph immediately preceding, or (ii) that purports to meet
the requirements of Section 10(a)(3) of the Act and is used in connection with
an offering of securities subject to Rule 415, will be filed as a part of an
amendment to the registration statement and will not be used until such
amendment is effective, and that, for purposes of determining any liability
under the Securities Act of 1933, each such post-effective amendment shall be
deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.

          Insofar as indemnification for liabilities arising under the
Securities Act of 1933 may be permitted to directors, officers and controlling
persons of the registrant pursuant to the foregoing provisions, or otherwise,
the registrant has been advised that in the opinion of the Securities and
Exchange Commission such indemnification is against public policy as expressed
in the Act and is, therefore, unenforceable.  In the event that a claim for
indemnification against such liabilities (other than the payment by the
registrant of expenses incurred or paid by a director, officer or controlling
person of the registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.

          The undersigned registrant hereby undertakes to respond to requests
for information that is incorporated by reference into the prospectus pursuant
to Items 4, 10(b), 11, or 13 of this Form, within one business day of receipt of
such request, and to send the incorporated documents by first class mail or
other equally prompt means.  This includes information contained in documents
filed subsequent to the effective date of the registration statement through the
date of responding to the request.

          The undersigned registrant hereby undertakes to supply by means of a
post-effective  amendment all information concerning a transaction, and the
company being acquired involved therein, that was not the subject of and
included in the registration statement when it became effective.

                                     II-2

<PAGE>
 
                                   SIGNATURES

          Pursuant to the requirements of the Securities Act of 1933, the
registrant has duly caused this pre-effective amendment to the registration
statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Chicago, State of Illinois, on March 14, 1994.


                                       NORTHERN TRUST CORPORATION


                                           /s/ David W. Fox
                                       By:____________________________________
                                               David W. Fox
                                               Chairman of the Board
                                               and Chief Executive Officer


                               POWER OF ATTORNEY

          Pursuant to the requirements of the Securities Act of 1933, this pre-
effective amendment to the registration statement has been signed by the
following persons in the capacities indicated on March 14, 1994.

<TABLE>
<CAPTION>
           Signature                               Title
           ---------                               -----
<S>                               <C>
 
      /s/ David W. Fox
_______________________________   Chairman of the Board, Chief Executive
          David W. Fox            Officer and Director ((principal executive
                                  officer) for himself and as attorney-in-fact
                                  for directors indicated by asterisk)

     /s/ Perry R. Pero
_______________________________   Senior Executive Vice President and Chief
         Perry R. Pero            Financial Officer (principal financial 
                                  officer)
 
   /s/ John H. Robinson
_______________________________   Senior Vice President and Controller
       John H. Robinson           (principal accounting officer)

       Worley H. Clark*           Director
      Barry G. Hastings*          Director
       Arthur L. Kelly*           Director
        Ardis Krainik*            Director
       Robert D. Krebs*           Director
    Frederick A. Krehbiel*        Director
</TABLE> 

                                     II-3
<PAGE>
                                 
<TABLE>                           
<S>                               <C> 
   William G. Mitchell*           Director
    William A. Osborn*            Director
     William A. Pogue*            Director
     Harold B. Smith*             Director
  William D. Smithburg*           Director
     John S. Sutfin*              Director
     Bide L. Thomas*              Director
</TABLE>

                                     II-4
<PAGE>
 

                                 EXHIBIT INDEX
<TABLE>
<CAPTION>
 
 EXHIBIT                                               SEQUENTIALLY 
 NUMBER                                                  NUMBERED
- ---------                                              ------------
<C>        <S>                                         <C>
 
**2.1      Agreement and Plan of Reorganization
           dated as of December 12, 1993 among
           Northern Trust Corporation, Hazlehurst
           Merger Corporation, Hazlehurst &
           Associates, Inc. and certain stockholders
           of Hazlehurst & Associates, Inc.
           (including exhibits)

2.2        Amendment No. 1 to Agreement and Plan of
           Reorganization, dated as of March 6, 1994,
           among Northern Trust Corporation, Hazlehurst
           Merger Corporation, Hazlehurst & Associates,
           Inc. and certain stockholders of Hazlehurst &
           Associates, Inc.

*4.1       Restated Certificate of Incorporation, as
           amended, of Northern Trust Corporation
           (incorporated by reference to Exhibit
           3 to Northern Trust Corporation's
           Quarterly Report on Form 10-Q for the
           quarter ended March 31, 1993).

**4.2      Bylaws, as amended, of Northern Trust
           Corporation.
 
*4.3       Rights Agreement, dated as of October
           17, 1989, between Northern Trust
           Corporation and Harris Trust and
           Savings Bank (incorporated by reference
           to Exhibit 1 to the Corporation's Report
           on Form 8-A dated October 30, 1989).
 
5          Opinion re legality, Schiff Hardin &
           Waite.
 
8          Opinion re tax matters, Alston & Bird.
 
23.1       Consent of Arthur Andersen & Co.
 
23.2       Consent of Schiff Hardin & Waite  (filed
           as part of Exhibit 5).
 
23.3       Consent of Alston & Bird (filed as part
           of Exhibit 8).

23.4       Consent of Price Waterhouse.
</TABLE>

                                     II-5

<PAGE>
 
<TABLE> 
<C>        <S> 
**24       Powers of attorney of directors whose
           names are signed to the registration
           statement pursuant to such powers.

99         Amended Form of proxy of Hazlehurst &
           Associates, Inc.
</TABLE> 

- ----------
*  Incorporated herein by reference to the document indicated.
** Previously filed. 

                                     II-6

<PAGE>
 









                                  EXHIBIT 2.2
                       TO PRE-EFFECTIVE AMENDMENT NO. 1
<PAGE>
 
 
                                                                  EXECUTION COPY



                                AMENDMENT NO. 1
                                       TO
                      AGREEMENT AND PLAN OF REORGANIZATION



     This Amendment No. 1 ("Amendment") to the Agreement and Plan of
Reorganization, among Northern Trust Corporation ("NTC"), Hazlehurst Merger
Corporation ("Merger Co."), Hazlehurst & Associates, Inc. (the "Company"), and
David M. Gladstone, R. David Parsons, and James G. Pope (collectively, the
"Principal Stockholders"), is entered into as of the 6th day of March, 1994.
Capitalized terms used and not otherwise defined herein shall have the
respective meanings ascribed to them in the Agreement (as defined herein).

                                  WITNESSETH:
                                  ---------- 
     WHEREAS, NTC, Merger Co., the Company and the Principal Stockholders are
parties to the Agreement and Plan of Reorganization dated as of December 12,
1993 (the "Agreement"); and

     WHEREAS, the parties hereto wish to amend certain provisions of the
Agreement.

     NOW, THEREFORE, in consideration of the premises and mutual agreements
herein contained, the parties hereto agree as follows:

     1.  AMENDMENTS TO THE AGREEMENT.  From and after the date hereof, the
Agreement shall be amended as follows:

     (a)  Section 1.3 shall be amended by striking the word "twenty" in the
first sentence and substituting the word "fifteen," and by striking the word
"fifth" in the first sentence and substituting the word "third."
    
<PAGE>
 
     (b)  Section 4.3 shall be amended by striking the words "March 7" and
substituting therefor the words "April 14."

     (c)  Conforming changes shall be made to the Agreement and Plan of Merger,
attached as Exhibit A to the Agreement, prior to the execution of such Agreement
and Plan of Merger.

     2.  BINDING EFFECT.  Each party hereby represents and warrants to the other
that this Amendment, and the Agreement as hereby amended, constitutes its legal,
valid, and binding obligation, enforceable against such party in accordance with
its terms.

     3.  REFERENCES.  All references in the Agreement to "this Agreement,"
"hereof," "herein," "hereunder," or words of similar import shall hereafter
refer to the Agreement as amended hereby.

     4.  GOVERNING LAW.  This Agreement shall be governed by and construed in
accordance with the laws of the State of Delaware, without giving effect to the
conflicts of law principles thereof.

     5.  COUNTERPARTS.  This Amendment may be executed in any number of
counterparts with the same effect as if the signatures to each counterpart were
upon the same instrument.

     6.  LIMITED EFFECT.  Except as expressly modified or amended herein, the
Agreement shall continue to be, and shall remain, in full force and effect in
accordance with its terms, and the execution, delivery, and effectiveness of
this Amendment shall not operate as a waiver of any right, power, or remedy of
any party, nor constitute a waiver of any of the provisions of the Agreement.

     IN WITNESS WHEREOF, Northern Trust Corporation, Hazlehurst Merger
Corporation, Hazlehurst & Associates, Inc., and the Principal Stockholders have
executed this
     
                                      -2-

<PAGE>
 
Amendment No. 1 to the Agreement and Plan of Reorganization as of the day and
year first written above.

NORTHERN TRUST CORPORATION             HAZLEHURST & ASSOCIATES, INC.
 a Delaware Corporation                 a Delaware Corporation



        /s/ William A. Osborne                 /s/ James G. Pope
By:  ________________________________  By:  ___________________________________
            President                              President
Title:  _____________________________  Title:  ________________________________


HAZLEHURST MERGER CORPORATION
 a Delaware Corporation


            Jeffrey H. Wessel
By:  ________________________________
            President
Title:  _____________________________



PRINCIPAL STOCKHOLDERS OF                        NUMBER OF SHARES OWNED
HAZLEHURST & ASSOCIATES, INC.


 /s/ David M. Gladstone                                  26,490
- ----------------------------                        ----------------
     David M. Gladstone


 /s/ R. David Parsons                                    26,490
- ----------------------------                        ----------------
     R. David Parsons


 /s/ James G. Pope                                       26,490
- ----------------------------                        ----------------
     James G. Pope





C:\TEXT\JGK\NORTHERN\HAZLE\AMENDMEN.1

                                      -3-


<PAGE>
 













                                   EXHIBIT 5
                       TO PRE-EFFECTIVE AMENDMENT NO. 1
<PAGE>

 
                                                                   
Nancy K. Bellis
(312) 258-5522

                                 March 15, 1994

Securities and Exchange Commission
Judiciary Plaza
450 Fifth Street, N.W.
Washington, D.C.  20549-1004

   RE:  NORTHERN TRUST CORPORATION
        REGISTRATION STATEMENT NO. 33-52219 ON FORM S-4
        -----------------------------------------------

Ladies and Gentlemen:

        We are acting as counsel for Northern Trust Corporation, a Delaware
corporation ("NTC"), in connection with NTC's filing of Registration Statement
No. 33-52219 on Form S-4 (the "Registration Statement") with the Securities and
Exchange Commission covering the registration of common stock and associated
Preferred Stock Purchase Rights of NTC ("NTC Common Stock"), to be issued
pursuant to the Agreement and Plan of Reorganization dated December 12, 1993, as
amended as of March 6, 1994 among NTC, Hazlehurst Merger Co., Hazlehurst &
Associates Inc. and certain stockholders of Hazlehurst & Associates, Inc., and
the related Agreement and Plan of Merger by and among NTC, Hazlehurst Merger
Co., and Hazlehurst & Associates, Inc. (collectively, the "Agreements"). In that
connection, we have examined such corporate records, certificates and other
documents and have made such other factual and legal investigations as we have
deemed necessary or appropriate for the purposes of this opinion.

        Based upon the foregoing, it is our opinion that:

          (1)  NTC is a corporation duly incorporated and validly existing under
               the laws of the State of Delaware.

          (2)  NTC Common Stock has been duly authorized and, when issued as 
               contemplated by the Agreements, will be validly issued, fully
               paid and nonassessable.

          We hereby consent to the filing of this opinion as Exhibit 5 to the
Registration Statement and to the reference to us under the caption "Legal
Opinion" in the Registration Statement.

                                    Respectfully submitted,

                                    SCHIFF HARDIN & WAITE



                                    By: _______________________________
                                           Nancy K. Bellis

<PAGE>
 










                                   EXHIBIT 8
                       TO PRE-EFFECTIVE AMENDMENT NO. 1
<PAGE>
 
                                 ALSTON & BIRD


                              One Atlantic Center
                          1201 West Peachtree Street
                          Atlanta, Georgia 30309-3424

                                 404-881-7000
                       Fax: 404-881-7777  Telex: 54-2996

Pinney L. Allen                                       Direct Dial (404) 881-7485



                                March 14, 1994



Hazlehurst & Associates, Inc.
400 Perimeter Center Terrace
Suite 850
Atlanta, Georgia 30346



          Re:  PROPOSED PLAN OF REORGANIZATION INVOLVING NORTHERN TRUST 
               CORPORATION, HAZLEHURST MERGER CORPORATION, HAZLEHURST &
               ASSOCIATES, INC., AND THE PRINCIPAL STOCKHOLDERS OF HAZLEHURST &
               ASSOCIATES, INC.

Ladies and Gentlemen:

     We have acted as counsel to Hazlehurst & Associates, Inc. ("HAA"), a 
Delaware corporation, in connection with the proposed merger of Hazlehurst
Merger Corporation ("HMC"), a wholly owned subsidiary of Northern Trust
Corporation ("NTC"), with and into HAA, with HAA as the surviving entity (the
"Merger"). The Merger will be effected pursuant to the Agreement and Plan of
Reorganization among Northern Trust Corporation, Hazlehurst Merger Corporation,
Hazlehurst & Associates, Inc. and the Principal Stockholders of Hazlehurst &
Associates, Inc. dated as of December 12, 1993, as amended (the "Merger
Agreement"). In our capacity as counsel to HAA, our opinion has been requested
with respect to certain of the federal income tax consequences of the proposed
Merger.

     In rendering this opinion, we have examined (i) the Internal Revenue Code 
of 1986, as amended (the "Code") and Treasury Regulations, (ii) the legislative 
history of applicable sections of the Code, and (iii) appropriate Internal 
Revenue Service and court decisional authority. In addition, we have relied upon
certain information made known to us as more fully described below. All 
capitalized terms used herein without definition shall
<PAGE>
 
Hazlehurst & Associates, Inc.
March 14, 1994
Page 2



have the respective meanings specified in the Merger Agreement, and unless 
otherwise specified, all section references herein are to the Code.

                            INFORMATION RELIED UPON
                            -----------------------

     In rendering the opinions expressed herein, we have examined such documents
as we have deemed appropriate, including:

          (1)   the Merger Agreement;

          (2)   the Registration Statement that has been filed with the 
                Securities and Exchange Commission regarding the Merger
                ("Registration Statement"), which includes the preliminary Proxy
                Statement-Prospectus; and

          (3)   such additional documents as we have considered relevant.

     In our examination of such documents, we have assumed, with your consent, 
that all documents submitted to us as photocopies faithfully reproduce the 
originals thereof, that such originals are authentic, that all such documents 
have been or will be duly executed to the extent required, and that all 
statements set forth in such documents are accurate. We have also obtained such 
additional information and representations as we have deemed relevant and 
necessary through consultation with various officers and representatives of NTC 
and HAA.

     You have advised us that the proposed transaction will (i) provide NTC and 
HAA with expanded geographic markets and greater market presence, (ii) provide 
NTC and HAA with stronger management that is better able to manage the combined 
company, (iii) provide the ability to raise additional capital as needed to 
pursue development of new business, and (iv) create the critical mass to keep 
both companies competitive in that environment. To achieve these goals, the 
following will occur pursuant to the Merger Agreement:

          (1)   NTC will form HMC by transferring cash in exchange for all the 
outstanding shares of HMC Common stock ("HMC Common Stock").

          (2)   HMC will merge with and into HAA pursuant to the General 
Corporation Law of Delaware. HAA will be the surviving corporation of the Merger
and as a result will become a wholly owned subsidiary of NTC and will continue 
to be governed by the laws of the State of Delaware.
<PAGE>
 
Hazlehurst & Associates, Inc.
March 14, 1994
Page 3



          (3)   At the time the Merger becomes effective ("Effective Time"), 
each issued and outstanding share of HMC Common Stock will cease to be 
outstanding and will be converted into one share of HAA Common Stock, and each 
issued and outstanding share of HAA Common Stock (excluding treasury shares and 
shares held by shareholders who perfect their dissenters' rights) will cease to 
be outstanding and will be converted into and exchanged for the right to receive
such number of shares of voting common stock of NTC as shall have a market value
equal to $22,500,000 determined on the basis of the unweighted average of the 
last-sale prices for the common stock of NTC, as reported by NASDAQ for the 
fifteen trading days ending on the third trading day preceding the closing 
("Closing Date Value"), but not more than 681,818, nor less than 468,750 shares 
of NTC common stock, unless HAA so elects pursuant to Section 4.12 of the Merger
Agreement.

          (4)   No fractional shares of NTC Common Stock will be issued as a 
result of the Merger. In lieu of the issuance of fractional shares, cash 
payments will be paid to the holders of the HAA Common Stock equal to the value 
of such fractional shares were they to be issued.

          (5)   Any holder of shares of HAA Common Stock who objects to the 
Merger and exercises statutory dissenters' rights of appraisal will be entitled 
to receive the value of such shares as calculated and determined pursuant to the
General Corporation Law of Delaware.

     With your consent, we have also relied on certain factual matters confirmed
to us by you as true both now and as of the Effective Time:

          (a)   The fair market value of the NTC Common Stock and other 
consideration received by each HAA shareholder will, in each instance, be 
approximately equal to the fair market value of the HAA Common Stock surrendered
in the exchange.

          (b) There is no plan or intention by the shareholders of HAA who own
one percent (1%) or more of the HAA stock, and to the best of the knowledge of
the management of HAA, there is no plan or intention on the part of the
remaining shareholders of HAA to sell, exchange, or otherwise dispose of a
number of shares of NTC stock received in the transaction that would reduce the
HAA shareholders' ownership of NTC stock to a number of shares having a value,
as of the date of the transaction, of less than 50 percent of the value of all
of the formerly outstanding stock of HAA as of the same date. For purposes of
this representation, shares of HAA stock exchanged for cash or other property,
surrendered by dissenters or exchanged for cash in lieu of fractional shares of
NTC stock will be treated as outstanding HAA stock on the date of the
transaction. Moreover, shares of HAA stock held by HAA shareholders and
otherwise sold, redeemed, or disposed of prior or subsequent to the Merger will
be treated as outstanding stock of HAA in making this representation.



<PAGE>
 
Hazlehurst & Associates, Inc.
March 14, 1994
Page 4




          (c) Following the Merger, HAA will hold at least 90 percent of the
fair market value of its net assets and at least 70 percent of the fair market
value of its gross assets and at least 90 percent of the fair market value of
HMC's net assets and at least 70 percent of the fair market value of HMC's gross
assets held immediately prior to the transaction. For purposes of this
representation, amounts paid by HAA or HMC to dissenters, amounts paid by HAA or
HMC to shareholders who receive cash or other property, amounts used by HAA or
HMC to pay reorganization expenses, and all redemptions and distributions
(except for regular, normal dividends) made by HAA will be included as assets of
HAA or HMC, respectively, immediately prior to the Merger. Assets transferred
from NTC to HMC to effect the Merger shall not be taken into consideration.

          (d)   Prior to the transaction, NTC will be in control of HMC. For 
purposes of this representation and those set forth below in paragraphs (e), 
(l), and (m), "control" means ownership of 80 percent of the total combined 
voting power of all classes of stock entitled to vote and at least 80 percent of
the total number of all other classes of stock.

          (e)   HAA has no plan or intention to issue additional shares of its 
stock that would result in NTC losing control of HAA following the Merger.

          (f)   NTC has no plan or intention to reacquire any of its Common 
Stock issued in the transaction.

          (g) NTC has no plan or intention to liquidate HAA; to merge HAA with
or into another corporation; to sell or otherwise dispose of the stock of HAA
except for transfers of stock to corporations controlled by NTC; or to cause HAA
to sell or otherwise dispose of any of its assets or of any of the assets
acquired from HMC, except for dispositions made in the ordinary course of
business or transfers of assets to a corporation controlled by HAA.

          (h)   The liabilities of HMC assumed by HAA (including the liabilities
to which the transferred assets of HMC are subject), if any, were incurred by 
HMC in the ordinary course of its business.

          (i)   Following the transaction, HAA will continue its historic 
business or use a significant portion of its historic business assets in a 
business.

          (j)   NTC, HMC, HAA, and the shareholders of HAA will pay their 
respective expenses, if any, incurred in connection with the transaction.
<PAGE>
 
Hazlehurst & Associates, Inc.
March 14, 1994
Page 5




          (k)   There is no intercorporate indebtedness existing between NTC and
HAA or between HMC and HAA that was issued, acquired, or will be settled at a 
discount.

          (l)   In the transaction, shares of HAA Common Stock representing 
control of HAA will be exchanged solely for voting Common Stock of NTC. For 
purposes of this representation, shares of HAA Common Stock exchanged for cash 
or other property originating with NTC will be treated as outstanding HAA Common
Stock on the date of the transaction.

          (m)   At the time of the transaction, HAA will not have outstanding 
any warrants, options, convertible securities, or any other type of right 
pursuant to which any person could acquire stock in HAA that, if exercised or 
converted, would affect NTC's acquisition or retention of control of HAA.

          (n)   NTC does not own, nor has it owned during the past five years, 
any shares of the stock of HAA.

          (o)   HAA is not an investment company. For purposes of the foregoing,
an "investment company" is a corporation that is a regulated investment company,
a real estate investment trust, or a corporation 50 percent or more of the value
of whose total assets are stock and securities and 80 percent or more of the 
value of whose total assets are assets held for investment. In addition, for 
each of NTC and HMC, not more than 25 percent of the fair market value of its 
adjusted total assets consists of stock and securities of any one issuer, and 
not more than 50 percent of the fair market value of its adjusted total assets 
consists of stock and securities of five or fewer issuers. For purposes of the 
preceding sentence, (a) a corporation's adjusted total assets exclude cash, cash
items (including accounts receivable and cash equivalents), and United States 
government securities, (b) a corporation's adjusted total assets exclude stock 
and securities issued by any subsidiary at least 50 percent of the voting power 
or 50 percent of the total fair market value of the stock of which is owned by 
the corporation, but the corporation is treated as owning directly a ratable 
share (based on the percentage of the fair market value of the subsidiary's 
stock owned by the corporation) of the assets owned by any such subsidiary, and 
(c) all corporations that are members of the same "controlled group" within the 
meaning of section 1563(a) of the Internal Revenue Code (the "Code") are treated
as a single issuer.

          (p)   On the date of the transaction, the fair market value of the 
assets of HAA will exceed the sum of its liabilities, plus the amount of 
liabilities, if any, to which the assets are subject.


<PAGE>
 
    (q)  HAA is not under the jurisdiction of a court in a case under
Title 11 of the United States Code or a receivership, foreclosure, or similar
proceeding in a federal or state court.

    (r)  The payment of cash to HAA shareholders in lieu of fractional shares of
NTC Common Stock will not be a separately bargained for consideration, but
rather will represent a mere mechanical rounding of the fractional share
interests that may result from the Merger, and will be undertaken solely for the
purpose of avoiding the expense and inconvenience of issuing and transferring
fractional shares. The total cash consideration that will be paid to HAA 
shareholders in lieu of fractional shares of NTC Common Stock will represent 
less than one percent (1%) of the total consideration issued in the Merger.
No shareholder of HAA will receive an amount in cash greater than the value of
one full share of NTC Common Stock in lieu of fractional shares.

    (s)  None of the compensation received by any shareholder-employees of HAA
will be separate consideration for, or allocable to, any of their shares of 
HAA Common Stock. None of the shares of NTC Common Stock received by any
shareholder-employees will be separate consideration for, or allocable to, any
employment agreement. Any compensation paid to a HAA shareholder-employee who
continues as an employee of NTC subsequent to the Merger will be for services 
actually rendered and will be commensurate with amounts paid to third parties
bargaining at arm's-length for similar services.

    (t)  NTC will pay or assume only those expenses of HAA that are solely
and directly related to the Merger.

    (u)  The Merger Agreement represents the entire understanding of NTC, HAA
and HMC with respect to the Merger.

    (v)  At all times during the five-year period ending on the effective date
of the Merger, the fair market value of all of HAA's United States real
property interests was and will have been less than 50 percent of the total 
fair market value of (a)its United States real property interests, (b) its
interests in real property located outside the United States, and (c) its
other assets used or held for use in a trade or business. For purposes of the
preceding sentence, (x) United States real property interests include all
interests (other than an interest solely as a creditor) in real property and
associated personal property (such as movable walls and furnishings) located
in the United States or the Virgin Islands and interests in any corporation
(other than a controlled corporation) owning any United States real property
interest, (y) HAA is treated as owning its proportionate share (based on the
relative fair market value of its ownership interest to all ownership
interests) of the assets owned by any controlled corporation or any
partnership, trust, or estate in which HAA is a partner or beneficiary, and 
(z) any such entity in turn is treated as owning its 




  
 
 
  










<PAGE>
  

proportionate share of the assets owned by any controlled corporation or
any partnership, trust, or estate in which the entity is a partner or
beneficiary. As used in this paragraph, "controlled corporation" means 
any corporation at least 50 percent of the fair market value of the stock
of which is owned by HAA, in the case of a first-tier subsidiary of HAA
or by a controlled corporation, in the case of a lower-tier subsidiary.

     (w)  HAA has not filed, and holds no assets subject to, a consent
under section 341(f) of the Code and the regulations thereunder.

     (x)  HAA is not a party to, and holds no assets subject to, a "safe
harbor lease" under former section 168(f)(8) of the Code and the regulations
thereunder.

                                   OPINIONS
                                   -------- 

     Based solely on the information submitted and the representation set
forth above, we are of the opinion that:

     (1)  Provided the proposed merger of HMC with and into HAA qualifies as
a statutory merger under the applicable laws of the State of Delaware and
since (a) after the proposed transaction, HAA will hold substantially all of
its assets and substantially all of the assets of HMC and (b) in the 
transaction, the HAA shareholders will exchange an amount of stock constituting
control of HAA solely for voting NTC Common Stock, the proposed merger will
constitute a reorganization within the meaning of section [S][S] 368(a)(1)(A)
and 368(a)(2)(E) of the Code. The reorganization will not be disqualified by
reason of the fact that NTC Common Stock is used in the transaction (section
368(a)(2)(E)). For purposes of this ruling, "substantially all" means at 
least 90 percent of the fair market value of the net assets and at least 70
percent of the fair market value of the gross assets of HAA held immediately
prior to the proposed transaction. NTC, HMC, and HAA will each be "a party
to a reorganization" within the meaning of section 368(b) of the Code.

     (2)  No gain or loss will be recognized by NTC upon the receipt of HAA
Common Stock soley in exchange for Common Stock of HMC (section 354(a)(1)).

     (3)  No gain or loss will be recognized to HMC on the transfer of its
assets to HAA solely in exchange for shares of HAA Common Stock and the
assumption by HAA of the liabilities, if any, of HMC (sections 357(a) and
361(a)).

     (4)  No gain or loss will be recognized to HAA upon the receipt of the
assets of HMC in exchange for sales of HAA Common Stock (section 1032(a)).

  





<PAGE>
 
     (5)  No gain or loss will be recognized by the HAA shareholders upon
the exchange of their HAA Common Stock solely for NTC Common Stock (section
354(a)(1)).

     (6)  The basis of the NTC Common Stock to be received by the HAA 
shareholders will be the same, in each instance, as the basis of the HAA
Common Stock surrendered in exchange therefor (section 358(a)(1)).

     (7)  The holding period of the NTC Common Stock will include the holding
period of the HAA Common Stock surrendered in exchange therefor, provided
the HAA Common Stock was held as a capital asset on the date of the exchange
(section 1223(1)).

     (8)  The payment of cash in lieu of fractional share interests of NTC
Common Stock will be treated as if the fractional shares were distributed as
part of the exchange and then were redeemed by NTC. These cash payments will
be treated as having been received as distributions in full payment in
exchange for the stock redeemed as provided in section 302(a) of the Code
(Rev. Rul. 66-365, 1966 C.B. 116 and Rev. Proc. 77-41, 1977-2 C.B. 574).

     (9)  Where a HAA shareholder receives cash by exercising statutory
dissenters' rights, the cash will be treated as having been received by such
shareholder as a distribution in redemption of his HAA Common Stock, subject
to the provisions and limitations of section 302 of the Code.

  The opinions expressed herein are based upon existing statutory, regulatory
and judicial authority, any of which may be changed at any time with 
retroactive effect. In addition, our opinions are based solely on the documents
that we have examined, the additional information that we have obtained, and 
the statements set out herein, which we have assumed are true on the date the
Merger is consummated. Our opinions cannot be relied upon if any of the facts
contained in such documents or if such additional information is, or later
becomes, inaccurate, or if any of the statements set out herein is, or later
becomes, inaccurate. Finally, our opinions are limited to the tax matters
specifically covered thereby, and  we have not been asked to address, nor have
we addressed, any other tax consequences of the proposed transactions,
including, without limitation, the status of HAA as an S corporation, the 
impact of the change in tax status of HAA assuming it is an S corporation, or
the impact of a change in accounting method, if any, effected by the Merger.

 













<PAGE>
 
   This opinion is being provided solely for the use of Hazlehurst & Associates,
Inc. and the shareholders of Hazlehurst & Associates, Inc. and for purposes of
Northern Trust Corporation's Form S-4 Registration Statement under the 
Securities Act of 1933 filed with the Securities and Exchange Commission. No
other person or party shall be entitled to rely on this opinion. We hereby
consent to the filing of this opinion as an exhibit to the Form S-4
Registration Statement and consent to any references to this opinion or our
firm in the Proxy Statement-Prospectus.


                                       Very truly yours, 

                                       ALSTON & BIRD




                                       By: /s/ Pinney L. Allen
                                          --------------------
                                          Pinney L. Allen









<PAGE>
 



                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
                   -----------------------------------------



Northern Trust Corporation:

As independent public accountants, we hereby consent to the incorporation by
reference in this Form S-4 of our report dated January 18, 1994, incorporated by
reference in Northern Trust Corporation's Annual Report on Form 10-K for the
year ended December 31, 1993 and to all references to our firm included in this
registration statement.



ARTHUR ANDERSEN & CO.



Chicago, Illinois
March 14, 1994



<PAGE>
 
                       CONSENT OF INDEPENDENT ACCOUNTANTS


We hereby consent to the use in the Prospectus constituting part of this
Registration Statement on Form S-4 of Northern Trust Corporation of our report
dated February 11, 1994 relating to the financial statements of Hazlehurst &
Associates, Inc., which appears in such Prospectus. We also consent to the 
reference to us under the heading "Experts" in such Prospectus.

                

PRICE WATERHOUSE
Atlanta, Georgia
March 14, 1994



<PAGE>
 











                                  EXHIBIT 99
                       TO PRE-EFFECTIVE AMENDMENT NO. 1
<PAGE>
 
                                                             

                                 FORM OF PROXY

                         HAZLEHURST & ASSOCIATES, INC.
                                ATLANTA, GEORGIA
                        SPECIAL MEETING OF STOCKHOLDERS


  The undersigned stockholder of Hazlehurst & Associates, Inc. ("Hazlehurst"),
Atlanta, Georgia, hereby constitutes and appoints James G. Pope and R. David
Parsons, or either one of them, each with full power of substitution, to vote as
designated below all of the shares of Hazlehurst Class A Common Stock held of
record by the undersigned on March 8, 1994, at the Special Meeting of
Stockholders to be held at 400 Perimeter Center Terrace, Suite 850, Atlanta,
Georgia 30346 on Thursday, April 14, 1994, at 10:00 a.m. local time, and at any
adjournments or postponements thereof.

1.   PROPOSAL TO:    Approve the Agreement and Plan of Reorganization, dated as
     of December 12, 1993, as amended as of March 6, 1994, by and among Northern
     Trust Corporation ("NTC"), Hazlehurst Merger Corporation ("Acquisition"),
     Hazlehurst, and certain stockholders of Hazlehurst (the "Principal
     Stockholders"), and the related Agreement and Plan of Merger, pursuant to
     which, among other matters, (a) Acquisition will be merged with and into
     Hazlehurst, and Hazlehurst will become a wholly owned subsidiary of NTC,
     and (b) the shares of Hazlehurst Common Stock will be converted into the
     right to receive such number of shares of NTC Common Stock as are described
     in the Proxy Statement-Prospectus dated March 16, 1994.

       FOR ______           AGAINST ______            ABSTAIN ______

2.   OTHER PROPOSALS:    In their sole discretion, the Proxies are authorized to
     vote upon such other business as may properly come before the Special
     Meeting or any adjournments or postponements thereof.

THIS PROXY, WHEN PROPERLY EXECUTED, WILL BE VOTED IN THE MANNER DIRECTED BY THE
UNDERSIGNED STOCKHOLDER.  IF NO DIRECTION IS MADE, THIS PROXY WILL BE VOTED FOR
PROPOSAL 1, AND WITH DISCRETIONARY AUTHORITY ON ALL OTHER MATTERS THAT MAY
PROPERLY COME BEFORE THE SPECIAL MEETING OR ANY ADJOURNMENTS OR POSTPONEMENTS
THEREOF.

  Please sign exactly as your name appears on your stock certificate and date.
Where shares are held jointly, each stockholder should sign.  When signing as
executor, administrator, trustee or guardian, please give full title as such.

                                 ------------------------------------------
                                 Signature of Stockholder

                                 ------------------------------------------
                                 Signature of Stockholder (if held jointly)


                                 Dated:______________________________, 1994
                                         (month)           (day)


        THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS   
           OF HAZLEHURST & ASSOCIATES, INC. AND MAY BE REVOKED BY   
                    THE STOCKHOLDER PRIOR TO ITS EXERCISE.


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