CSX CORP
SC 13D/A, 1997-08-18
RAILROADS, LINE-HAUL OPERATING
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                        SECURITIES AND EXCHANGE COMMISSION
                              Washington, D.C. 20549

                                   Schedule 13D

                    Under the Securities Exchange Act of 1934

                                (Amendment No. 3)*

                           Delaware Otsego Corporation
                                 (Name of Issuer)

                                   Common Stock
                          (Title of Class of Securities)

                                   246244 10 7
                                  (Cusip Number)

                                 Alan A. Rudnick
                          Vice President-General Counsel
                             and Corporate Secretary
                                 CSX Corporation
                               901 East Cary Street
                            Richmond, Virginia  23219
                                  (804) 782-1400
                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                 August 17, 1997
                       (Date of Event which Requires Filing
                                of this Statement)


                If the filing person has previously filed a
                statement on Schedule 13G to report the acqui-
                sition which is the subject of this Schedule
                13D, and is filing this schedule because of
                Rule 13d-1(b)(3) or (4), check the following
                box [].

                Check the following box if a fee is being paid
                with this statement.  [].  (A fee is not re-
                quired only if the reporting person:  (1) has a
                previous statement on file reporting beneficial
                ownership of more than five percent of the
                class of securities described in Item 1; and
                (2) has filed no amendment subsequent thereto<PAGE>





                reporting beneficial ownership of five percent
                or less of such class.)  (See Rule 13d-7.)

                Note:  Six copies of this statement, including
                all exhibits, should be filed with the Commis-
                sion.  See Rule 13d-1(a) for other parties to
                whom copies are to be sent.

                        The remainder of this cover page shall
                        be filled out for a reporting person's
                        initial filing on this form with re-
                        spect to the subject class of securi-
                        ties, and for any subsequent amendment
                        containing information which would al-
                        ter disclosures provided in a prior
                        cover page.

                (continued on following page(s))

                The information required on the remainder of
                this cover page shall be deemed to be "filed"
                for the purpose of Section 18 of the Securities
                Exchange Act of 1934 ("Act") or otherwise sub-
                ject to the liabilities of that section of the
                Act but shall be subject to all other provi-
                sions of the Act (however, see the Notes).
                      
                                       -2-<PAGE>
                                        

         1    NAME OF REPORTING PERSONS                  CSX CORPORATION

              S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
                             62-1051971
         2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP    (a) []
                                                                  (b) []

         3    SEC USE ONLY

         4    SOURCE OF FUNDS

              WC

         5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS         []
              REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E):

         6    CITIZENSHIP OR PLACE OF ORGANIZATION

              UNITED STATES OF AMERICA

         NUMBER OF SHARES BENEFICIALLY OWNED BY EACH PERSON WITH

         7    SOLE VOTING POWER

              0

         8    SHARED VOTING POWER

              110,250

         9    SOLE DISPOSITIVE POWER

              0

         10   SHARED DISPOSITIVE POWER

              110,250

         11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
              REPORTING PERSON

              110,250

         12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)           []
              EXCLUDES CERTAIN SHARES

         13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

              6.0%

         14   TYPE OF REPORTING PERSON

              CO

                                       -3-<PAGE>
                                        

         1    NAME OF REPORTING PERSONS        CSX TRANSPORTATION, INC.

              S.S. OR I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS

                                  54-6000720

         2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP    (a) []
                                                                  (b) []

         3    SEC USE ONLY

         4    SOURCE OF FUNDS

              WC

         5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS            []
              IS REQUIRED PURSUANT TO ITEMS 2(D) OR 2(E):

         6    CITIZENSHIP OR PLACE OF ORGANIZATION

              UNITED STATES OF AMERICA

         NUMBER OF SHARES BENEFICIALLY OWNED BY EACH PERSON WITH

         7    SOLE VOTING POWER

              0

         8    SHARED VOTING POWER

              110,250

         9    SOLE DISPOSITIVE POWER

              0

         10   SHARED DISPOSITIVE POWER

              110,250

         11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
              REPORTING PERSON

              110,250

         12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11)           []
              EXCLUDES CERTAIN SHARES

         13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

              6. 0%

         14   TYPE OF REPORTING PERSON


                                       -4-<PAGE>
                                        

              CO
                                        
                                        
                                       -5-<PAGE>
                                        

              This Amendment No. 3 to Schedule 13D, originally filed
         February 12, 1996 and subsequently amended (as amended, the
         "Schedule 13D"), by (i) CSX Corporation, a Virginia corporation
         ("CSX"), which has its principal executive offices at 901 East
         Cary Street, Richmond, Virginia 23219, and (ii) CSX Transporta-
         tion, Inc., a Virginia corporation ("CSTX"), which has its
         principal executive offices at 500 Water Street, Jacksonville,
         Florida 32203, relates to the common stock of Delaware Otsego
         Corporation (the "Company"), whose principal executive offices
         are at 1 Railroad Avenue, Cooperstown, New York 13326.  Unless
         otherwise indicated all capitalized terms used herein shall
         have the same meanings as set forth in the Schedule 13D.

         ITEM 3.   SOURCE AND AMOUNT OF FUNDS AND OTHER CONSIDERATION.

              Item 3 of the Schedule 13D is hereby amended by the addi-
         tion of the following:

              Funds to be provided by CSX to consummate the transactions
         contemplated by the Merger Agreement (as defined below) will be
         provided from working capital.

         ITEM 4.   PURPOSE OF TRANSACTION.

              Item 4 of the Schedule 13D is hereby amended by the addi-
         tion of the following:

              On August 17, 1997, the Company, Mr. Walter G. Rich
         ("Rich"), CSX and NSC entered into a merger agreement (the
         "Merger Agreement") providing for an acquisition of all shares
         of capital stock of the Company by an entity to be formed by
         CSX, NSC and Rich.  In connection with the Merger Agreement,
         CSX, NSC and Rich entered into a side agreement (the "Side
         Agreement"), dated as of August 17, 1997, with respect to cer-
         tain matters among such parties.  Reference is hereby made to
         the Merger Agreement, filed as Exhibit 3 hereto, and to the
         Side Agreement, filed as Exhibit 4 hereto, for the terms of
         such agreements.

              On August 14, 1997, a complaint (the "Complaint") was
         filed with the Supreme Court of the State of New York by a
         Company shareholder requesting, among other things, that the
         proposed transaction be enjoined.  Reference is hereby made to
         the Complaint, filed as Exhibit 5 hereto, for the complete
         terms of such Complaint.

         ITEM 5.   INTEREST IN SECURITIES OF THE ISSUER.

              This filing excludes all shares and options with respect
         to shares of Common Stock of the Company beneficially owned by
         Rich, as to which Rich possesses sole voting and dispositive
         power.
                                      
                                       -6-<PAGE>
                                      
         ITEM 6.   CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR
                   RELATIONSHIPS WITH SECURITIES OF THE ISSUER.

              Reference is hereby made to the information set forth un-
         der Item 4 above.

         ITEM 7.   MATERIAL TO BE FILED AS EXHIBITS.

              Exhibit 3 -- Merger Agreement, dated August 17, 1997.

              Exhibit 4 -- Side Agreement, dated August 17, 1997.

              Exhibit 5 -- Complaint, dated August 14, 1997.
                                      
                                       -7-<PAGE>
                                      
                                    SIGNATURES


              After reasonable inquiry and to the best of my knowledge
         and belief, I certify that the information set forth in this
         statement is true, complete and correct.

         Dated: August 17, 1997

                                          CSX CORPORATION


                                          By:  /s/ Mark G. Aron
                                               Mark G. Aron
                                               Executive Vice President -
                                               Law and Public Affairs



                                          CSX TRANSPORTATION, INC.


                                          By:  /s/ William M. Hart
                                               William M. Hart
                                               Vice President --
                                               Corridor Development
                                      
                                       -8-




                                            EXHIBIT 3



                                            EXECUTION COPY

                                                     

                           AGREEMENT AND PLAN OF MERGER

                                   BY AND AMONG

                                 CSX CORPORATION,
                             A VIRGINIA CORPORATION,

                          NORFOLK SOUTHERN CORPORATION,
                             A VIRGINIA CORPORATION,

                                  WALTER G. RICH

                                       AND



                           DELAWARE OTSEGO CORPORATION,
                             A NEW YORK CORPORATION,









                           DATED AS OF AUGUST 17, 1997.<PAGE>





                                TABLE OF CONTENTS
                                -----------------

                                                                PAGE
                                                                ----

                                    ARTICLE I 

                             THE OFFER AND THE MERGER

         Section 1.1.  The Offer...............................   1
         Section 1.2.  Company Action..........................   3
         Section 1.3.  The Merger..............................   3
         Section 1.4.  Action by Shareholders..................   4
         Section 1.5.  Proxy Statement.........................   4
         Section 1.6.  Closing.................................   5
         Section 1.7.  Effective Time..........................   5
         Section 1.8.  Effects of the Merger...................   5
         Section 1.9.  Certificate of Incorporation............   5
         Section 1.10. Bylaws..................................   5
         Section 1.11. Directors and Officers..................   5


                                    ARTICLE II

                CONVERSION OF SECURITIES; EXCHANGE OF CERTIFICATES

         Section 2.1.  Conversion of Securities................   5
         Section 2.2.  Exchange of Certificates and Cash.......   6
         Section 2.3.  Stock Transfer Books ...................   8
         Section 2.4.  Stock Options; Payment Rights...........   8
         Section 2.5.  Dissenting Shares.......................   8


                                   ARTICLE III

                      REPRESENTATIONS AND WARRANTIES OF DOCP

         Section 3.1.  Organization and Qualifications; 
                         Subsidiaries..........................   9
         Section 3.2.  Certificate of Incorporation 
                         and Bylaws............................   9
         Section 3.3.  Capitalization..........................   9
         Section 3.4.  Authority Relative to This Agreement....  10
         Section 3.5.  No Conflict; Required Filings and 
                         Consents..............................  11
         Section 3.6.  Compliance..............................  11
         Section 3.7.  Litigation..............................  12
         Section 3.8.  SEC Filings; Financial Statements.......  12
         Section 3.9.  Absence of Certain Changes and Events...  13
         Section 3.10. Employee Benefit Plans..................  14
         Section 3.11. Environmental Matters...................  14
         Section 3.12. [Intentionally omitted.]................  15
         Section 3.13. Transactions with Affiliates............  16

                                       -i-<PAGE>
                                        
         Section 3.14. Contracts...............................  16
         Section 3.15. Tax Matters.............................  16
         Section 3.16. Opinion of Financial Advisor............  17
         Section 3.17. Brokers.................................  17
         Section 3.18. Information Supplied....................  17
         Section 3.19. State Takeover Statutes.................  17


                                    ARTICLE IV

                    REPRESENTATIONS AND WARRANTIES OF BUYER, 
                       CSX, NSC AND THE MANAGEMENT INVESTOR

         Section 4.1.  Organization and Qualification..........  18
         Section 4.2.  Authority Relative to This Agreement....  18
         Section 4.3.  No Conflict; Required Filings 
                         and Consents..........................  18
         Section 4.4.  Information Supplied....................  19
         Section 4.5.  Brokers.................................  19


                                    ARTICLE V

                  COVENANTS RELATING TO THE CONDUCT OF BUSINESS

         Section 5.1.  Conduct of Business by DOCP Pending 
                         the Merger............................  20
         Section 5.2.  Other Actions...........................  22


                                    ARTICLE VI

                               ADDITIONAL COVENANTS

         Section 6.1.  Access to Information; Confidentiality..  22
         Section 6.2.  No Solicitation.........................  23
         Section 6.3.  Indemnification, Exculpation and 
                         Insurance.............................  24
         Section 6.4.  Notification of Certain Matters.........  24
         Section 6.5.  Further Action; Best Efforts............  25
         Section 6.6.  Public Announcements....................  25
         Section 6.7.  Conveyance Taxes........................  25


                                   ARTICLE VII

                                CLOSING CONDITIONS

         Section 7.1.  Conditions to Obligations of Each 
                         Party to Effect the Merger............  26
         Section 7.2.  Conditions to Obligations of DOCP 
                         to Effect the Merger..................  26
         Section 7.3.  Conditions to Obligations of Buyer 
                         to Effect the Merger..................  27
         Section 7.4.  Frustration of Closing Conditions.......  27


                                       -ii-<PAGE>
                                        

                                   ARTICLE VIII

                        TERMINATION, AMENDMENT AND WAIVER

         Section 8.1.  Termination.............................  27
         Section 8.2.  Effect of Termination...................  28
         Section 8.3.  Amendment...............................  28
         Section 8.4.  Waiver..................................  29
         Section 8.5.  Fees, Expenses and Other Payments.......  29


                                    ARTICLE IX

                                GENERAL PROVISIONS

         Section 9.1.  Effectiveness of Representations, 
                         Warranties and Agreements.............  29
         Section 9.2.  Notices.................................  30
         Section 9.3.  Certain Definitions.....................  32
         Section 9.4.  Interpretation..........................  32
         Section 9.5.  Severability............................  33
         Section 9.6.  Entire Agreement........................  33
         Section 9.7.  Assignment..............................  33
         Section 9.8.  Parties in Interest.....................  33
         Section 9.9.  Governing Law...........................  33
         Section 9.10. Enforcement.............................  34
         Section 9.11. Counterparts............................  34
         Section 9.12. Guarantee...............................  34



         Annex I - Conditions of the Offer
                                        
                                      -iii-<PAGE>
                                        

                               INDEX OF DEFINED TERMS
                               ----------------------


    TERM                             PAGE      TERM                      PAGE
    ----                             ----      ----                      ----

    affiliate........................ 32       Offer Price...............  1
    Agreement........................  1       Options................... 10
    Alternative Transaction.......... 23       Permits................... 12
    business day..................... 32       person.................... 32
    Buyer............................  1       Property.................. 14
    Buyer Material Adverse Effect.... 18       Proxy Statement...........  4
    Certificates.....................  6       Release................... 15
    Cleanup.......................... 15       Respective Representatives 22
    Code.............................  7       Schedule 13E-3............  2
    Confidential Information......... 22       Schedule 14D-1............  2
    control, controlled, controlled            Schedule 14D-9............  3
      by, under common control with.. 32       SEC.......................  2
    Convertible Debt................. 10       Securities Act............ 12
    CSX..............................  1       subsidiary, subsidiaries.. 32
    Dissenting Shares................  8       Superior Proposal......... 24
    DOCP.............................  1       Surviving Corporation.....  1
    DOCP Board.......................  1       taken as a whole.......... 32
    DOCP Disclosure Schedule.........  9       Transmittal Documents.....  7
    DOCP Material Adverse Effect.....  9       Warrants.................. 10
    DOCP Plans....................... 14
    DOCP SEC Reports................. 12
    DOCP Shares......................  1
    DOCP Stock Options...............  9
    DOCP Subsidiary..................  9
    Effective Time...................  5
    Environmental Laws............... 15
    ERISA............................ 14
    Exchange Act..................... 11
    Exchange Agent...................  6
    Exchange Fund....................  6
    Expenses......................... 29
    Fair Market Value................ 24
    Governmental Entity.............. 11
    Hazardous Substances............. 15
    HSR Act.......................... 11
    Indemnified Parties.............. 24
    IRS.............................. 14
    knowledge........................ 32
    LLC..............................  1
    Management Investor..............  1
    material, materially............. 32
    Merger...........................  1
    Merger Meeting...................  4
    Minimum Condition................ A-1
    New York Law.....................  1
    NSC..............................  1
    Offer............................  1
    Offer Documents..................  2

                                       -iv-<PAGE>
                                        

                   AGREEMENT AND PLAN OF MERGER, dated as of August 17,
         1997 (this "Agreement"), by and among CSX CORPORATION, a
         Virginia corporation ("CSX"), NORFOLK SOUTHERN CORPORATION, a
         Virginia corporation ("NSC"), WALTER G. RICH (the "Management
         Investor") and DELAWARE OTSEGO CORPORATION, a New York
         corporation ("DOCP").

                               W I T N E S S E T H:

                   WHEREAS, the parties to this Agreement desire to
         effect the acquisition of DOCP by a corporate subsidiary
         ("Buyer") of a limited liability company ("LLC") to be formed
         by CSX, NSC and the Management Investor;

                   WHEREAS, no later than the Effective Time, the
         Management Investor, together with CSX and NSC, will
         collectively own all of the outstanding membership interests of
         LLC;

                   WHEREAS, in furtherance of the foregoing, upon the
         terms and subject to the conditions of this Agreement and in
         accordance with the Business Corporation Law of the State of
         New York (collectively, the "New York Law"), Buyer will make
         the cash tender offer described in Section 1.1 hereof (the
         "Offer") and thereafter will merge with and into DOCP (the
         "Merger"), with DOCP as the surviving corporation (the
         "Surviving Corporation");

                   WHEREAS, the Board of Directors of DOCP (the "DOCP
         Board") has determined that the Offer and the Merger are fair
         to, and in the best interests of, DOCP and the holders of DOCP
         Shares (other than CSX and the Management Investor) and has
         approved and adopted this Agreement, including the Offer, the
         Merger and the other transactions contemplated hereby; and 

                   NOW, THEREFORE, in consideration of the foregoing and
         the respective representations, warranties, covenants and
         agreements set forth in this Agreement, the parties hereto,
         intending to be legally bound, hereby agree as follows:


                                    ARTICLE I

                             THE OFFER AND THE MERGER

                   Section 1.1.  The Offer.  (a)  Provided that nothing
         shall have occurred that would result in a failure to satisfy
         any of the conditions set forth in paragraphs (i) through (iv)
         of Annex I hereto, as promptly as practicable after the date
         hereof, but in no event later than five business days following
         the public announcement of the terms of this Agreement, Buyer
         (or its subsidiary) shall commence an offer to purchase all of
         the outstanding shares of common stock, par value $.125 per
         share, of DOCP (the "DOCP Shares") at a price of $22 per DOCP
         Share, net to the seller in cash (the "Offer Price").  

                                       -1-<PAGE>
                                        
                   (b)  The Offer shall be subject to the conditions set
         forth in Annex I hereto.  Buyer shall not, without the prior
         written consent of DOCP, make any change in the terms or
         conditions of the Offer that is adverse to the holders of DOCP
         Shares, decrease the Offer Price or the number of DOCP Shares
         sought in the Offer or impose conditions to the Offer other
         than those set forth in Annex I hereto (it being agreed that a
         waiver by Buyer of any condition, in its discretion, shall not
         be deemed to be adverse to the holders of DOCP Shares);
         provided that, if on any scheduled expiration date of the Offer
         all conditions to the Offer shall not have been satisfied or
         waived, the Offer may, but need not, be extended from time to
         time without the consent of DOCP for such period of time as is
         reasonably expected by Buyer to be necessary to satisfy the
         unsatisfied conditions; provided further that the Offer may be
         extended by Buyer without the consent of DOCP for any period
         required by any rule, regulation, interpretation or position of
         the United States Securities and Exchange Commission (the
         "SEC") or the staff thereof applicable to the Offer; and
         provided further that, if at any scheduled expiration date of
         the Offer all conditions to the Offer shall have been satisfied
         but less than a number of DOCP Shares that, together with the
         number of DOCP shares to be contributed by CSX and the
         Management Investor to Buyer, represent less than 90% of the
         outstanding DOCP Shares, on a fully-diluted basis, shall have
         been tendered into the Offer, Buyer shall be entitled to extend
         the Offer from time to time without the consent of DOCP (for
         not more than 10 business days) in order to permit Buyer to
         solicit additional DOCP Shares to be tendered into the Offer.
         It is agreed that the conditions to the Offer are solely for
         the benefit of Buyer and may be asserted by Buyer regardless of
         the circumstances giving rise to any such condition (including
         any action or inaction by Buyer) or may, but need not, be
         waived by Buyer, in whole or in part at any time and from time
         to time, in its sole discretion.

                   (c)  As soon as practicable on the date of
         commencement of the Offer, Buyer (and, to the extent required
         by law, CSX, NSC and the Management Investor, as co-bidders)
         shall file with the SEC a Tender Offer Statement on Schedule
         14D-1 (together with all supplements and amendments thereto,
         the "Schedule 14D-1") and, together with DOCP, a Rule 13E-3
         Transaction Statement on Schedule 13E-3 (together with all
         supplements and amendments thereto, the "Schedule 13E-3") with
         respect to the Offer, which shall contain the offer to purchase
         and form of the related letter of transmittal (together with
         any supplements or amendments thereto, collectively, the "Offer
         Documents").  DOCP shall provide Buyer (and, if applicable,
         CSX, NSC and the Management Investor) with such information
         concerning DOCP as may reasonably be requested in connection
         with the preparation of the Schedule 13E-3.  Each party hereto
         shall promptly supplement, update and correct any information
         provided by it for use in the Offer Documents if and to the
         extent that it is or shall have become incomplete, false or
         misleading.  In any such event, Buyer shall take all steps
         necessary to cause the Offer Documents as so supplemented,
         updated or corrected to be filed with the SEC and to be
         disseminated to the holders of DOCP Shares, in each case, as
         and to the extent required by applicable federal securities
         laws.  DOCP and its counsel, with respect to the Schedule 14D-
         1, and each party hereto and its respective counsel, with
         respect to the Schedule 13E-3, shall be given an opportunity to
         review and comment on such filing and each supplement,
         amendment or response to comments with respect thereto prior to
         its being filed with or delivered to the SEC.

                                       -2-<PAGE>
                                       
                   Section 1.2.  Company Action.  (a)  DOCP hereby
         consents to the Offer and represents that the DOCP Board, at a
         meeting duly called and held, has, by the vote of all directors
         present with one abstention, (i) determined that this Agreement
         and the transactions contemplated hereby, including the Offer
         and the Merger, are fair to and in the best interest of DOCP
         and the holders of DOCP Shares (other than CSX and the
         Management Investor), (ii) approved and adopted this Agreement
         and the transactions contemplated hereby, including the Offer
         and the Merger, which approval satisfies in full the
         requirements of the New York Law (including all approvals
         required under Section 912 of the New York Law in connection
         with the consummation of the transactions contemplated hereby)
         and (iii) resolved to recommend acceptance of the Offer, and,
         if applicable, approval and adoption of this Agreement and the
         Merger, by the holders of DOCP Shares.  DOCP further represents
         that Smith Barney, Inc. has delivered to the DOCP Board its
         opinion, dated the date of this Agreement (which will be
         confirmed in writing as promptly as practicable after the date
         of this Agreement), that, as of such date, the cash
         consideration to be received in the Offer and the Merger by the
         holders of DOCP Shares (other than CSX, NSC  and the Management
         Investor and their respective affiliates) is fair to such
         holders from a financial point of view.  DOCP shall promptly
         furnish Buyer with a list of its shareholders, mailing labels,
         and any available listing or computer file containing the names
         and addresses of all record holders of DOCP Shares and lists of
         securities positions of DOCP Shares held in stock depositories,
         in each case, true and correct as of the most recent
         practicable date, and will provide to Buyer such additional
         information (including updated lists of shareholders, mailing
         labels and lists of securities positions) and such other
         assistance as Buyer may reasonably request in connection with
         the Offer.

                   (b)  As soon as practicable on the day that the Offer
         is commenced, DOCP shall file with the SEC a Solicitation/
         Recommendation Statement on Schedule 14D-9 (together with all
         supplements and amendments thereto, the "Schedule 14D-9")
         which, unless otherwise required due to the applicable
         fiduciary duties of the DOCP Board as determined by the members
         thereof in good faith based on the advice of outside counsel,
         shall reflect the recommendations of the DOCP Board referred to
         above.  Each party shall promptly supplement, update and
         correct any information provided by it for use in the Schedule
         14D-9 if and to the extent that it is or shall have become
         incomplete, false or misleading.  In any such event, DOCP shall
         take all steps necessary to cause the Schedule 14D-9 as so
         supplemented, updated or corrected to be filed with the SEC and
         to be disseminated to the holders of DOCP Shares, in each case,
         as and to the extent required by applicable United States
         federal securities laws.  Each other party hereto and its
         respective counsel shall be given an opportunity to review and
         comment on the Schedule 14D-9 and each supplement, amendment or
         response to comments with respect thereto prior to its being
         filed or delivered with the SEC.

                   Section 1.3.  The Merger.  Upon the terms and subject
         to the conditions set forth in this Agreement, and in
         accordance with the New York Law, at the Effective Time Buyer
         shall be merged with and into DOCP.  As a result of the Merger,
         the separate existence of Buyer shall cease and DOCP shall
         continue as the Surviving Corporation.  At the election of
         Buyer, any direct or indirect wholly owned subsidiary of Buyer
         may be substituted for Buyer as a constituent party of the
         Merger.  In such event, the parties hereto shall execute an
         appropriate amendment to this agreement to reflect such
         substitution.

                                       -3-<PAGE>
                                       
                   Section 1.4.  Action by Shareholders.  If required by
         applicable law to consummate the Merger, DOCP, acting through
         the DOCP Board, shall, in accordance with applicable law, its
         certificate of incorporation and bylaws:  (a) as soon as
         practicable after consummation of the Offer, duly call, give
         notice of, convene and hold a special meeting of shareholders
         (the "Merger Meeting") for the purpose of adopting this
         Agreement and approving the Merger; (b) include in the Proxy
         Statement (as defined below) the determination and
         recommendation of the DOCP Board to the effect that the DOCP
         Board, having determined that this Agreement and the
         transactions contemplated hereby, including the Offer and the
         Merger, are fair to and in the best interests of DOCP and the
         holders of DOCP Shares (other than CSX and the Management
         Investor), has approved and adopted this Agreement and the
         transactions contemplated hereby and, unless otherwise required
         due to the applicable fiduciary duties of the DOCP Board as
         determined by the members thereof in good faith based on the
         advice of outside counsel, recommends that such holders vote in
         favor of the approval and adoption of this Agreement and the
         Merger; and (c) use its best efforts to obtain the necessary
         approval of this Agreement and the Merger by such holders.  In
         the event of the Merger Meeting, each of CSX, NSC, Buyer and
         the Management Investor shall vote all DOCP Shares owned by
         such person in favor of the adoption of this Agreement and the
         transactions contemplated hereby.

                   Section 1.5.  Proxy Statement.  (a)  If required by
         applicable law in connection with the Merger, as promptly as
         practicable after consummation of the Offer, DOCP shall prepare
         and file with the SEC a proxy or information statement relating
         to the Merger Meeting (together with any supplements or
         amendments thereto, the "Proxy Statement"), and shall use its
         reasonable best efforts to have such filing cleared by the SEC.
         CSX, NSC, Buyer and the Management Investor shall furnish to
         DOCP all information concerning such party as DOCP may
         reasonably request in connection with the preparation of the
         Proxy Statement.  As promptly as practicable after the Proxy
         Statement has been cleared by the SEC, DOCP shall mail the
         Proxy Statement to the holders of DOCP Shares.  The Proxy
         Statement shall include the recommendation of the DOCP Board in
         favor of the Merger as described in Section 1.4.

                   (b)  The information supplied by each of CSX, NSC,
         LLC, Buyer and the Management Investor for inclusion in the
         Proxy Statement shall not, at the time the Proxy Statement (or
         any supplement or amendment thereto) is first mailed to the
         holders of DOCP Shares or, unless promptly corrected, during
         the pendency of the Merger Meeting, contain any untrue
         statement of a material fact or omit to state any material fact
         required to be stated therein or necessary in order to make the
         statements therein not misleading.  If at any time prior to the
         Effective Time any event or circumstance relating to any party
         hereto, or their respective officers or directors, should be
         discovered by such party which should be set forth in a
         supplement or an amendment to the Proxy Statement, such party
         shall promptly inform the other parties hereto thereof and
         shall take appropriate action in respect thereof.

                   (c)  Notwithstanding anything in the foregoing to the
         contrary, in the event that at any time Buyer and/or any other
         direct or indirect subsidiary of Buyer shall acquire at least
         90% of the outstanding DOCP Shares, Buyer and DOCP shall take
         all necessary and appropriate action to cause the Merger to
         become effective as promptly as practicable after the
         expiration of

                                       -4-<PAGE>
                                       
         the Offer and the satisfaction or waiver of the conditions set
         forth in Article VII without the Merger Meeting in accordance
         with Section 905 of the New York Law.

                   Section 1.6.  Closing.  Unless this Agreement shall
         have been terminated and the transactions contemplated hereby
         shall have been abandoned pursuant to Section 8.1, and subject
         to the satisfaction or waiver of the conditions set forth in
         Article VII, the closing of the Merger shall take place as
         promptly as practicable (and, in any event, within 10 business
         days) after the satisfaction or waiver of the conditions set
         forth in Article VII at the offices of Kelley, Drye & Warren
         LLP, New York, New York, unless another date, time or place is
         agreed to in writing by the parties hereto.

                   Section 1.7.  Effective Time.  As promptly as
         practicable after the satisfaction or waiver of the conditions
         set forth in Article VII, the parties hereto shall cause the
         Merger to be consummated by filing a certificate of merger with
         the Secretary of State of the State of New York and by making
         any related filings required under the New York Law in
         connection with the Merger.  The Merger shall become effective
         at such time as the certificate of merger is duly filed with
         the Secretary of State of the State of New York or at such
         later time, not to exceed 30 days from the date of such filing,
         as is specified in the certificate of merger (the "Effective
         Time").

                   Section 1.8.  Effects of the Merger.  From and after
         the Effective Time, the Surviving Corporation shall possess all
         the rights, privileges, powers and franchises and be subject to
         all of the restrictions, disabilities and duties of DOCP and
         Buyer, and the Merger shall otherwise have the effects as
         provided by New York law.

                   Section 1.9.  Certificate of Incorporation.  The
         certificate of incorporation of Buyer in effect at the
         Effective Time shall be the certificate of incorporation of the
         Surviving Corporation until amended in accordance with
         applicable law.

                   Section 1.10.  Bylaws.  The bylaws of Buyer in effect
         at the Effective Time shall be the bylaws of the Surviving
         Corporation until amended in accordance with applicable law.

                   Section 1.11.  Directors and Officers.  From and
         after the Effective Time, until successors are duly elected or
         appointed and qualified (or earlier resignation or removal) in
         accordance with applicable law, (a) the directors of Buyer at
         the Effective Time shall be the directors of the Surviving
         Corporation and (b) the officers of DOCP at the Effective Time
         shall be the officers of the Surviving Corporation.


                                    ARTICLE II

                CONVERSION OF SECURITIES; EXCHANGE OF CERTIFICATES

                   Section 2.1.  Conversion of Securities.  At the
         Effective Time, by virtue of the Merger and without any action
         on the part of Buyer, DOCP or the holders of any of DOCP
         securities:

                                       -5-<PAGE>
                                       
                   (a)  Each DOCP Share issued and outstanding
              immediately prior to the Effective Time (other than any
              DOCP Shares to be canceled pursuant to Section 2.1(b) and
              any Dissenting Shares) shall be converted into the right
              to receive an amount in cash equal to the Offer Price,
              without interest.

                   (b)  Each DOCP Share or DOCP Stock Option held in the
              treasury of DOCP (or any DOCP Subsidiary) and each DOCP
              Share or DOCP Stock Option owned by Buyer (or its
              subsidiary) immediately prior to the Effective Time shall
              automatically be canceled and extinguished without any
              conversion thereof, and no payment shall be made with
              respect thereto.

                   (c)  Each share of capital stock (and any option to
              purchase any share of capital stock) of Buyer outstanding
              immediately prior to the Effective Time shall be converted
              into and become one share of a class of capital stock (or
              an option to purchase one share of a class of capital
              stock) of the Surviving Corporation with the same rights,
              powers and privileges as the share of capital stock (or
              option to purchase a share of capital stock) so converted
              and shall constitute the only outstanding shares (or
              options to purchase shares) of capital stock of the
              Surviving Corporation.

                   (d)  On and after the Effective Time, holders of
              certificates which immediately prior to the Effective Time
              represented issued and outstanding DOCP Shares
              ("Certificates") shall cease to have any rights as
              shareholders of DOCP, except the right to receive the
              consideration set forth in this Article II with respect to
              each DOCP Share held by them.

                   Section 2.2.  Exchange of Certificates and Cash.  (a)
         Exchange Agent.  From time to time as may be necessary to make
         payments of cash pursuant to Section 2.1(a), Buyer shall
         deposit, or shall cause to be deposited, with or for the
         account of a bank or trust company designated by Buyer, which
         shall be reasonably satisfactory to DOCP (the "Exchange
         Agent"), for exchange in accordance with this Article II
         through the Exchange Agent, amounts in cash to be paid in
         respect of outstanding DOCP Shares (all such cash funds, the
         "Exchange Fund").  The Exchange Agent shall, pursuant to
         Buyer's instructions, deliver such cash from the Exchange Fund
         to holders of DOCP Shares pursuant to the exchange procedures
         set forth below.  Any interest, dividends or other income
         earned on the investment of the Exchange Fund shall be for the
         account of Buyer.

                   (b)  Exchange Procedures.  As soon as reasonably
         practicable after the Effective Time, Buyer shall instruct the
         Exchange Agent to mail to each holder of record of a
         Certificate or Certificates, (i) a letter of transmittal (which
         shall specify that delivery shall be effected, and risk of loss
         and title to a Certificate shall pass, only upon proper
         delivery of such Certificate to the Exchange Agent and shall be
         in such form and have such other provisions as Buyer may
         reasonably specify) and (ii) instructions to effect the
         surrender of Certificates in exchange for cash.  Upon surrender
         of a Certificate for cancellation to the Exchange Agent or to
         such other agent or agents as may be appointed by Buyer
         together with such letter of transmittal, duly executed, and
         such other customary documents as may be required pursuant to
         such instructions 

                                       -6-<PAGE>
                                       
         (collectively, the "Transmittal Documents"), the holder of such
         Certificate shall be entitled to receive in exchange therefor
         the amount in cash which such holder has the right to receive
         pursuant to Section 2.1(a) and the Certificate so surrendered
         shall forthwith be canceled.  In the event of a transfer of
         ownership of DOCP Shares which is not registered in the
         transfer records of DOCP, the applicable Exchange Fund cash may
         be paid in accordance with this Article II to a transferee only
         if the Certificate evidencing such transferred DOCP Shares is
         presented to the Exchange Agent, accompanied by all documents
         required to evidence and effect such transfer and by evidence
         that any applicable stock transfer taxes have been paid.
         Exchange Fund cash shall be delivered by the Exchange Agent as
         promptly as practicable following surrender of a Certificate
         and the related Transmittal Documents, and Exchange Fund cash
         payments may be made by check (unless otherwise required by a
         depositary institution in connection with the book-entry
         delivery of securities).  No interest shall be payable on any
         Exchange Fund cash to be delivered in respect of DOCP Shares
         regardless of any delay in making payments.  Until surrendered
         as contemplated by this Section 2.2(b), each Certificate shall
         be deemed, at any time after the Effective Time, to evidence
         only the right to receive, upon such surrender, the applicable
         Exchange Fund cash.

                   (c)  Termination of Exchange Fund.  Any portion of
         the Exchange Fund which is not distributed to the holders of
         DOCP Shares by the six-month anniversary of the Effective Time
         shall be delivered to Buyer, upon demand, and any holders of
         DOCP Shares who have not theretofore complied with this Article
         II and received Exchange Fund cash may thereafter look only to
         Buyer for the applicable cash to which they are entitled
         pursuant to this Article II.

                   (d)  No Liability.  Neither Buyer, CSX, NSC, the
         Management Investor, the Surviving Corporation nor DOCP shall
         be liable to any holder of DOCP Shares for any Exchange Fund
         cash delivered to a public official pursuant to any applicable
         abandoned property, escheat or similar law.

                   (e)  Withholding Rights.  Buyer or the Exchange Agent
         shall be entitled to deduct and withhold from the consideration
         otherwise payable pursuant to this Agreement to any holder of
         DOCP Shares such amounts as Buyer or the Exchange Agent is
         required to deduct and withhold with respect to the making of
         such payment under the United States Internal Revenue Code of
         1986, as amended, and the rules and regulations thereunder (the
         "Code"), or any provision of United States state or local or
         foreign tax law.  To the extent that amounts are so deducted or
         withheld, such withheld amounts shall be treated for all
         purposes of this Agreement as having been paid to the holder of
         the DOCP Shares in respect of which such deduction and
         withholding was made.

                   (f)  Lost Certificates.  If any Certificate shall
         have been lost, stolen or destroyed, upon the making of an
         affidavit of that fact by the person claiming such Certificate
         to be lost, stolen or destroyed and, if required by Buyer or
         the Surviving Corporation, the posting by such person of a bond
         in such reasonable amount as Buyer or the Surviving Corporation
         may direct as indemnity against any claim that may be made
         against it with respect to such Certificate, the Exchange Agent
         shall issue in exchange for such lost, stolen or destroyed
         Certificate the cash deliverable in respect thereof pursuant to
         this Article.

                                       -7-<PAGE>
                                       
                   (g)  No Further Ownership Rights.  All cash paid
         pursuant to this Article upon the surrender or exchange of
         Certificates shall be deemed to have been paid in full
         satisfaction of all rights pertaining to the DOCP Shares
         theretofore represented by such Certificates.

                   Section 2.3.  Stock Transfer Books.  At the Effective
         Time, the stock transfer books of DOCP shall be closed and
         there shall be no further registration of transfers of DOCP
         Shares on the records of DOCP.  On or after the Effective Time,
         any Certificate presented to the Exchange Agent or the
         Surviving Corporation for any reason shall be exchanged for the
         consideration into which the DOCP Shares represented by such
         Certificate have been converted pursuant to this Article.

                   Section 2.4.  Stock Options; Payment Rights.  At the
         Effective Time, each outstanding DOCP Stock Option to purchase
         DOCP Shares, whether or not then exercisable, other than any
         DOCP Stock Option held in the treasury of DOCP (or any DOCP
         Subsidiary) or owned by Buyer (or its subsidiary) which shall
         be treated as provided in Section 2.1(b), shall be canceled,
         and the holder thereof shall be entitled to receive in full
         consideration therefor cash in an amount equal to the
         difference between the Offer Price and the per share exercise
         price thereof, multiplied by the number of DOCP Shares subject
         to such DOCP Stock Option; and DOCP shall obtain consents from
         the holders of any DOCP Stock Options to the extent necessary
         or appropriate to effect the foregoing.

                   Section 2.5.  Dissenting Shares.  (a)
         Notwithstanding any other provision of this Agreement to the
         contrary, DOCP Shares outstanding immediately prior to the
         Effective Time and held by shareholders who shall have not
         voted in favor of the Merger or consented thereto in writing
         and who shall be entitled to and shall have demanded properly
         in writing payment for such DOCP Shares in accordance with
         Sections 910 and 623 of the New York Law and who shall not have
         withdrawn such demand or otherwise have forfeited appraisal
         rights (collectively, "Dissenting Shares") shall not be
         converted into or represent the right to receive cash pursuant
         to Section 2.1.  Such shareholders shall be entitled to receive
         payment of the appraised value of such DOCP Shares held by them
         in accordance with the provisions of the New York Law, except
         that all Dissenting Shares held by shareholders who shall have
         failed to perfect or who effectively shall have withdrawn,
         forfeited or lost their rights to appraisal of such DOCP Shares
         under the New York Law shall thereupon be deemed to have been
         converted into and to have become exchangeable, as of the
         Effective Time, for the right to receive, without any interest
         thereon, the applicable consideration provided in Section 2.1,
         upon surrender, in the manner provided in Section 2.2, of the
         Certificate or Certificates that formerly evidenced such DOCP
         Shares.

                   (b)  DOCP shall give Buyer prompt notice of any
         demands for appraisal received by it, withdrawals of such
         demands, and any other instruments served pursuant to the New
         York Law received by DOCP and relating thereto.  DOCP and Buyer
         shall jointly direct all negotiations and proceedings with
         respect to demands for appraisal under the New York Law.
         Neither DOCP nor Buyer shall, except with the prior written
         consent of the other, make any payment with respect to any
         demands for appraisal, or offer to settle, or settle, any such
         demands.

                                       -8-<PAGE>
                                       
                                   ARTICLE III

                      REPRESENTATIONS AND WARRANTIES OF DOCP

                   DOCP hereby represents and warrants to each of the
         other parties hereto that:

                   Section 3.1.  Organization and Qualifications;
         Subsidiaries.  Each of DOCP, each DOCP subsidiary and each
         other person in which DOCP has an investment of greater than
         $1,000,000 (each, a "DOCP Subsidiary") is a corporation,
         partnership or other legal entity duly incorporated or
         organized, validly existing and in good standing under the laws
         of the jurisdiction of its incorporation or organization and
         has the requisite power and authority and all necessary
         governmental approvals to own, lease and operate its properties
         and to carry on its business as it is now being conducted,
         except where the failure to be so organized, existing or in
         good standing or to have such power, authority and governmental
         approvals would not, individually or in the aggregate, have a
         material adverse effect on the business, results of operations,
         financial condition, assets, properties or prospects of DOCP
         and the DOCP Subsidiaries, taken as a whole, or otherwise delay
         in any material respect or prevent consummation of the Offer or
         the Merger or otherwise prevent DOCP from performing its
         obligations under this Agreement in any material respect (any
         such event, a "DOCP Material Adverse Effect").  DOCP and each
         DOCP Subsidiary is duly qualified or licensed as a foreign
         corporation to transact business, and is in good standing, in
         each jurisdiction where the character of the properties owned,
         leased or operated by it or the nature of its business makes
         such qualification or licensing necessary, except for such
         failures to be so qualified or licensed and in good standing
         that could not reasonably be expected to, individually or in
         the aggregate, have a DOCP Material Adverse Effect.  Section
         3.1 of the written disclosure schedule previously delivered by
         DOCP to Buyer (the "DOCP Disclosure Schedule") sets forth a
         complete and correct list of all DOCP Subsidiaries.  Except for
         the capital stock of the DOCP Subsidiaries, DOCP does not
         beneficially or of record own, directly or indirectly, any
         capital stock or other ownership interest in any corporation,
         partnership, joint venture or other entity. 

                   Section 3.2.  Certificate of Incorporation and
         Bylaws.  DOCP has heretofore made available to Buyer a complete
         and correct copy of the certificate of incorporation and bylaws
         or equivalent organizational documents, each as amended to the
         date hereof, of DOCP and each DOCP Subsidiary.  Such
         certificates of incorporation, bylaws and equivalent
         organizational documents are in full force and effect.  Neither
         DOCP nor any DOCP Subsidiary is in violation of any provision
         of its certificate of incorporation, bylaws or equivalent
         organizational documents.

                   Section 3.3.  Capitalization.  The authorized capital
         stock of DOCP consists of 10,000,000 DOCP Shares and 1,000,000
         shares of preferred stock of DOCP, par value $1.25 per share.
         As of August 7, 1997, (a) 1,893,219 DOCP Shares were issued and
         outstanding, all of which were validly issued, fully paid and
         nonassessable, (b) 168,251 DOCP Shares were reserved for
         issuance upon the exercise of outstanding stock options granted
         pursuant to DOCP employee stock plans ("DOCP Stock Options"),
         (c) 421,309 DOCP Shares were reserved for issuance upon
         conversion of all outstanding Convertible Debt and Warrants of
         DOCP, (d) 110

                                       -9-<PAGE>
                                       
         DOCP Shares were held in the treasury of DOCP, (e) no DOCP
         Shares were held by DOCP Subsidiaries and (f) no shares of
         preferred stock of DOCP were issued and outstanding.  Except as
         set forth in this Section 3.3, as of August 7, 1997, no shares
         of capital stock or other voting securities of DOCP were
         issued, reserved for issuance or outstanding.  Except as set
         forth in this Section 3.3 or in Section 3.3, other than
         warrants to purchase 66,150 DOCP Shares, pursuant to the
         Warrant Agreement, dated as of January 31, 1996, by and between
         DOCP and Creditanstalt Corporate Finance, Inc. (the "Warrants")
         and other than DOCP's 6.5% Convertible Subordinated Notes due
         September 1, 2003 (the "Convertible Debt"), there are no
         options, stock appreciation rights, warrants or other rights,
         agreements, arrangements or commitments of any character
         (collectively, "Options") relating to the issued or unissued
         capital stock of DOCP or any DOCP Subsidiary or obligating DOCP
         or any DOCP Subsidiary to issue, grant or sell any shares of
         capital stock of, or other equity interests in, or convertible
         into equity interests in, DOCP or any DOCP Subsidiary.  Upon
         consummation of the Merger, the Warrants and the Convertible
         Debt shall cease to represent any right to purchase or
         otherwise obtain any capital stock of DOCP or the Surviving
         Corporation, and all rights of the holders of such Warrants and
         Convertible Debt to purchase or otherwise obtain any capital
         stock of DOCP shall, pursuant to the terms of such instruments,
         solely represent the right, upon proper exercise or conversion
         of such instruments, to obtain an amount in cash equal to the
         product of the Offer Price and the number of DOCP Shares for or
         into which such Warrants or Convertible Debt were exercisable
         or convertible immediately prior to the Effective Time.
         Section 3.3 of the DOCP Disclosure Schedule sets forth a
         complete and correct list as of August 16, 1997 of the number
         of DOCP Shares subject to DOCP Stock Options, the exercise
         prices and holders thereof and the terms of all stock option
         plans and agreements relating thereto.  Since August 7, 1997,
         DOCP has not issued any shares of its capital stock or Options
         in respect thereof, except upon the conversion of the
         Convertible Debt or the exercise of the Warrants or DOCP Stock
         Options referred to above.  All outstanding DOCP Shares have
         been, and all DOCP Shares subject to issuance as aforesaid,
         upon issuance on the terms and conditions specified in the
         instruments pursuant to which they are issuable, will be, duly
         authorized, validly issued, fully paid and nonassessable.
         Except as set forth in Section 3.3 of the DOCP Disclosure
         Schedule, there are no outstanding contractual obligations of
         DOCP or any DOCP Subsidiary to repurchase, redeem or otherwise
         acquire any shares of DOCP Shares or any capital stock of any
         DOCP Subsidiary, or make any investment (in the form of a loan,
         capital contribution or otherwise) in, any DOCP Subsidiary or
         any other person.  Except as set forth in Section 3.3 of the
         DOCP Disclosure Schedule, each outstanding share of capital
         stock of each DOCP Subsidiary is duly authorized, validly
         issued, fully paid and nonassessable and is owned by DOCP or
         wholly owned another DOCP Subsidiary free and clear of all
         security interests, liens, claims, pledges, options, rights of
         first refusal, agreements, limitations on DOCP's or such other
         DOCP Subsidiary's voting rights, charges and other encumbrances
         of any nature whatsoever.  Except as set forth in this Section
         3.3, there are no outstanding bonds, debentures, notes or other
         indebtedness having the right to vote or convertible into or
         exchangeable for securities having the right to vote on any
         matters upon which holders of DOCP Shares may vote.

                   Section 3.4.  Authority Relative to This Agreement.
         DOCP has all necessary corporate power and authority to execute
         and deliver this Agreement, to perform its obligations
         hereunder and to consummate the transactions contemplated
         hereby.  The execution and delivery of this Agreement by DOCP and 
         the consummation by DOCP of the transactions contemplated 

                                       -10-<PAGE>
                                       

         hereby have been duly and validly authorized by all necessary 
         corporate action, and no other corporate proceedings on the part 
         of DOCP or holders of its securities or indebtedness are necessary 
         to authorize this Agreement or to consummate the transactions 
         contemplated hereby (other than, with respect to consummation of 
         the Merger, except as contemplated by Section 1.5(c) hereof, the 
         approval and adoption of this Agreement by the holders of 
         two-thirds of the then-outstanding DOCP Shares and the filing and 
         recordation of appropriate merger and similar documents as required 
         by the New York Law).  This Agreement has been duly and validly 
         executed and delivered by DOCP, and, assuming the due authorization,
         execution and delivery by the other parties hereto, constitutes
         the legal, valid and binding obligation of DOCP, enforceable
         against DOCP in accordance with its terms.

                   Section 3.5.  No Conflict; Required Filings and
         Consents.  (a)  Except as set forth in Section 3.5 of the DOCP
         Disclosure Schedule, the execution and delivery of this
         Agreement by DOCP do not, and the performance of this Agreement
         and the consummation of the transactions contemplated hereby by
         DOCP will not, (i) conflict with or violate the certificate of
         incorporation or bylaws or equivalent organizational documents
         of DOCP or any DOCP Subsidiary, (ii) conflict with or violate
         any law, rule, regulation, order, judgment or decree applicable
         to DOCP or any DOCP Subsidiary or by which any property or
         asset of DOCP or any DOCP Subsidiary is bound or affected or
         (iii) result in any breach of or constitute a default (or an
         event which, with notice or lapse of time or both, would become
         a default) under, result in the loss of a material benefit
         under, or give to others any right of termination, amendment,
         acceleration, increased payments or cancellation of, or result
         in the creation of a lien or other encumbrance on any property
         or asset of DOCP or any DOCP Subsidiary pursuant to, any note,
         bond, mortgage, indenture, contract, agreement, lease, license,
         permit, franchise or other instrument or obligation to which
         DOCP or any DOCP Subsidiary is a party or by which DOCP or any
         DOCP Subsidiary or any property or asset of DOCP or any DOCP
         Subsidiary is bound or affected, except, in the case of clauses
         (ii) and (iii), for any such conflicts, violations, breaches,
         defaults or other occurrences as could not reasonably be
         expected to, individually or in the aggregate, have a DOCP
         Material Adverse Effect.

                   (b)  The execution and delivery of this Agreement by
         DOCP do not, and the performance of this Agreement and the
         consummation of the transactions contemplated hereby by DOCP
         will not, require any consent, approval, authorization or
         permit of, or filing with or notification to, any governmental
         or regulatory authority, domestic or foreign (each a
         "Governmental Entity"), except (i) for (A) applicable filings
         under the Securities Exchange Act of 1934, as amended, and the
         rules and regulations promulgated thereunder (the "Exchange
         Act"), (B) the requirements of the Hart-Scott-Rodino Antitrust
         Improvements Act of 1976, as amended, and the rules and
         regulations thereunder (the "HSR Act"), if applicable, and (C)
         the filing and recordation of appropriate merger and similar
         documents as required by the New York Law and (ii) where
         failure to obtain such consents, approvals, authorizations or
         permits, or to make such filings or notifications, could not
         reasonably be expected to, individually or in the aggregate,
         have a DOCP Material Adverse Effect.

                   Section 3.6. Compliance. Except as set forth in 
         Section 3.6 of the DOCP Disclosure Schedule, neither DOCP nor
         any DOCP Subsidiary is in conflict with, or in default or
                                        

                                       -11-<PAGE>
                                       
         or violation of, (a) any law, rule, regulation, order, judgment or
         decree applicable to DOCP or any DOCP Subsidiary or by which
         any property or asset of DOCP or any DOCP Subsidiary is bound
         or affected, or (b) any note, bond, mortgage, indenture,
         contract, agreement, lease, license, permit, franchise or other
         instrument or obligation to which DOCP or any DOCP Subsidiary
         is a party or by which DOCP or any DOCP Subsidiary or any
         property or asset of DOCP or any DOCP Subsidiary is bound or
         affected, except for such conflicts, defaults or violations as
         could not reasonably be expected to, individually or in the
         aggregate, have a DOCP Material Adverse Effect.  The business
         of DOCP is not being conducted in violation of any law,
         ordinance or regulation of any Governmental Entity, including
         environmental laws, and DOCP and each DOCP Subsidiary possess
         all permits, licenses, variances, exemptions, orders and
         approvals of all Governmental Entities required therefor
         ("Permits"), including as required under Environmental Laws,
         and there has occurred no default under any such Permits,
         except for the lack of Permits and for defaults under Permits
         as could not reasonably be expected to, individually or in the
         aggregate, have a DOCP Material Adverse Effect.  

                   Section 3.7.  Litigation.  Except as set forth in
         Section 3.7 of the DOCP Disclosure Schedule, (a) there is no
         single or series of related suits, actions, notices, demands,
         claims, investigations or proceedings pending or, to the
         knowledge of DOCP, threatened against DOCP or any DOCP
         Subsidiary, or any unsatisfied judgment against DOCP or any
         DOCP Subsidiary, relating to or involving an amount greater
         than $100,000 and (b) there is no judgment, decree, injunction
         or similar order of any Governmental Entity or arbitrator
         outstanding against DOCP or any DOCP Subsidiary or other single
         or series of related suits, actions or proceedings pending or,
         to the knowledge of DOCP, threatened that, individually or in
         the aggregate, could reasonably be expected to have a DOCP
         Material Adverse Effect.

                   Section 3.8  SEC Filings; Financial Statements.  (a)
         DOCP has filed all forms, reports and documents required to be
         filed by it with the SEC since January 1, 1995 and has
         heretofore made available to Buyer, in the form filed with the
         SEC all such forms, reports and documents (all such forms,
         reports and documents, collectively, with exhibits, schedules
         or information incorporated therein by reference, the "DOCP SEC
         Reports").  The DOCP SEC Reports and any forms, reports and
         other documents filed by DOCP with the SEC after the date of
         this Agreement (i) were or will be prepared in accordance with
         the requirements of the Securities Act of 1933, as amended, and
         the rules and regulations thereunder (the "Securities Act"),
         and the Exchange Act, as the case may be, and (ii) did not at
         the time they were filed and, except as amended prior the date
         hereof, at any time since filing or will not at the time they
         are filed contain any untrue statement of a material fact or
         omit to state a material fact required to be stated therein or
         necessary in order to make the statements made therein, in the
         light of the circumstances under which they were made, not
         misleading.  No DOCP Subsidiary is required to file any form,
         report or other document with the SEC.

                   (b)  Each of the consolidated financial statements
         (including, in each case, any notes thereto) contained in the
         DOCP SEC Reports (i) was prepared in accordance with generally
         accepted accounting principles applied on a consistent basis
         throughout the periods indicated (except as may be indicated in the  
         notes thereto), (ii) fairly presents the consolidated financial
         position, results of operations and cash flows of DOCP and the 
         consolidated DOCP Subsidiaries

                                       -12-<PAGE>
                                       
         as at the respective dates thereof and for the
         respective periods indicated therein (subject, in the case of
         unaudited statements, to normal and recurring year-end
         adjustments which were not and are not expected, individually
         or in the aggregate, to be material in amount) and (iii)
         complies as to form, as of its respective date of filing with
         the SEC, with all applicable accounting requirements and SEC
         rules and regulations.  Since December 31, 1994, there has been
         no change in any of the significant accounting (including tax
         accounting) policies, practices or procedures of DOCP or any
         DOCP Subsidiary except insofar as required by a change in
         generally accepted accounting principles.

                   (c)  Except as set forth in Section 3.8 of the DOCP
         Disclosure Schedule or as and to the extent set forth on the
         audited DOCP balance sheets contained in DOCP SEC Reports filed
         with the SEC prior to the date of this Agreement, DOCP and the
         DOCP Subsidiaries do not have any liability or obligation of
         any nature (whether accrued, absolute, contingent or otherwise)
         other than liabilities and obligations incurred in the ordinary
         course of business and which could not reasonably be expected
         to, individually or in the aggregate, have a DOCP Material
         Adverse Effect.

                   Section 3.9.  Absence of Certain Changes and Events.
         Except as set forth in Section 3.9 of the DOCP Disclosure
         Schedule, since December 31, 1996:  (a) DOCP and the DOCP
         Subsidiaries have conducted their businesses only in the
         ordinary course consistent with past practice, (b) there have
         not been any events or changes in circumstances which has
         resulted in or could, individually or in the aggregate,
         reasonably be expected to result in, a DOCP Material Adverse
         Effect, (c) there has not been (i) except as disclosed in DOCP
         SEC Reports filed prior to the date hereof, any declaration,
         setting aside or payment of any dividend or other distribution
         (whether in cash, stock or property) with respect to any DOCP
         capital stock, (ii) except as disclosed in DOCP SEC Reports
         filed prior to the date hereof, any split, combination or
         reclassification of any DOCP capital stock or any issuance or
         the authorization of any issuance of any other securities in
         respect of, in lieu of or in substitution for DOCP capital
         stock, except for issuances of DOCP Shares upon the exercise of
         DOCP Stock Options or the Warrants or the conversion of the
         Convertible Debt, in each case in accordance with the terms
         thereof, (iii) (A) any granting by DOCP or any DOCP Subsidiary
         to any current or former employee, officer, director or
         consultant of DOCP of any options to purchase DOCP Shares or
         any increase in compensation (including bonuses or
         commissions), except for normal increases in the ordinary
         course of business consistent with past practice or as required
         under employment or consulting agreements in effect as of the
         date of the most recent audited financial statements included
         in the DOCP SEC Reports filed prior to the date hereof, (B) any
         granting by DOCP or any DOCP Subsidiary to any current or
         former employee, officer, director or consultant of any
         increase in severance or termination pay, except as required
         under any employment, consulting, severance or termination
         agreements in effect as of the date of the most recent audited
         financial statements included in the DOCP SEC Reports filed
         prior to the date hereof or (C) any entry by DOCP or any DOCP
         Subsidiary into any employment, consulting, severance,
         termination or indemnification agreements, arrangements, or
         understandings with any such current or former employee,
         officer, director or consultant, (iv) except as disclosed in
         DOCP SEC Reports filed prior to the date hereof, any change 
         in accounting methods, principles or practices by DOCP 
         materially affecting its assets, liabilities or business, except 
         insofar as may have been required by a change 

                                       -13-<PAGE>
                                       
         in generally accepted accounting principles, or (v) any
         action which would have been prohibited without Buyer's
         approval under Section 5.1 if taken between the date of this
         Agreement and the Effective Time. 

                   Section 3.10.  Employee Benefit Plans.  With respect
         to all the employee benefit plans, programs and arrangements
         maintained for the benefit of any current or former employee,
         officer or director of DOCP or any DOCP Subsidiary (the "DOCP
         Plans"), except as set forth in Section 3.10 of the DOCP
         Disclosure Schedule:  (a) none of the DOCP Plans is a multi-
         employer plan within the meaning of the Employee Retirement
         Income Security Act of 1974, as amended, and the rules and
         regulations thereunder ("ERISA"); (b) none of the DOCP Plans
         promises or provides retiree medical or life insurance benefits
         to any person; (c) each DOCP Plan intended to be qualified
         under Section 401(a) of the Code has received a favorable
         determination letter from the United States Internal Revenue
         Service (the "IRS") that it is so qualified and nothing has
         occurred since the date of such letter that could reasonably be
         expected to affect the qualified status of such DOCP Plan other
         than occurrences that could not reasonably be expected to,
         individually or in the aggregate, have a DOCP Material Adverse
         Effect; (d) each DOCP Plan has been operated in all material
         respects in accordance with its terms and the requirements of
         applicable law; (e) neither DOCP nor any DOCP Subsidiary has
         incurred any direct or indirect liability under, arising out of
         or by operation of Title IV of ERISA in connection with the
         termination of, or withdrawal from, any DOCP Plan or other
         retirement plan or arrangement, and no fact or event exists
         that could reasonably be expected to give rise to any such
         liability, other than any liability that could not reasonably
         be expected to, individually or in the aggregate, have a DOCP
         Material Adverse Effect; and (f) DOCP and the DOCP Subsidiaries
         have not incurred any liability under, and have complied in all
         material respects with, the federal Worker Adjustment
         Retraining Notification Act, and no fact or event exists that
         could give rise to liability under such act, other than any
         liability that could not reasonably be expected to,
         individually or in the aggregate, have a DOCP Material Adverse
         Effect.  Except as set forth in Section 3.9 of the DOCP
         Disclosure Schedule, the aggregate accumulated benefit
         obligations of each DOCP Plan subject to Title IV of ERISA (as
         of the date of the most recent actuarial valuation prepared for
         such DOCP Plan) do not exceed the fair market value of the
         assets of such DOCP Plan (as of the date of such valuation).

                   Section 3.11.  Environmental Matters.  Except as set
         forth in Section 3.11 of the DOCP Disclosure Schedule:

                   (a)  DOCP and the DOCP Subsidiaries have not, and, to
         DOCP's knowledge, no other person has, Released, placed,
         stored, buried or dumped any material quantities of Hazardous
         Substances on, beneath or adjacent to each property owned,
         operated or leased by DOCP and the DOCP Subsidiaries (the
         "Property"), or, to the knowledge of DOCP, any property
         formerly owned, operated or leased by DOCP or the DOCP
         Subsidiaries, except for the presence of such Hazardous
         Substances as would not have a DOCP Material Adverse Effect.
                   
                   (b)  Neither DOCP nor any DOCP Subsidiary has entered
         into any agreement that requires them to pay to, reimburse,
         guarantee, pledge, defend, indemnify or hold harmless any
         person for or against any liabilities or costs in connection
         with any pending or threatened suit, 

                                       -14-

         action, notice, proceeding or investigation relating to alleged 
         noncompliance with, or liability under, Environmental Laws.  

                   (c)  Neither DOCP nor any DOCP Subsidiary has
         received any written notice or written order from any
         Governmental Entity or private entity advising them that they
         are responsible for or potentially responsible for Cleanup, or
         paying for the cost of Cleanup, of any Hazardous Substances on
         or adjacent to the Property or at any location containing
         Hazardous Substances generated, treated, transported or stored
         by DOCP or the DOCP Subsidiaries or on behalf of DOCP or the
         DOCP Subsidiaries, and neither DOCP nor any DOCP Subsidiary has
         entered into any agreements concerning such Cleanup, nor is
         DOCP aware of any material facts which DOCP has reasonable
         grounds to believe will give rise to such notice, order or
         agreement.

                   (d)  As used in this Agreement:  "Cleanup" shall mean
         all actions required to (i) cleanup, remove, treat or remediate
         Hazardous Substances in the indoor or outdoor environment, (ii)
         prevent the Release of Hazardous Substances so that they do not
         migrate, endanger or threaten to endanger public health or
         welfare or the indoor or outdoor environment, (iii) perform
         pre-remedial studies and investigations and post-remedial
         monitoring and care, (iv) respond to any government requests
         for information or documents in any way relating to cleanup,
         removal, treatment or remediation or potential cleanup,
         removal, treatment or remediation of Hazardous Substances in
         the indoor or outdoor environment or (v) any administrative,
         judicial, or other proceedings related to the above;
         "Environmental Laws" shall mean all applicable United States
         federal, state and local, and foreign laws, regulations, rules
         and ordinances relating to pollution or protection of the
         environment or human health and safety, including laws relating
         to Releases or threatened Releases of Hazardous Substances into
         the indoor or outdoor environment (including ambient air,
         surface water, groundwater, land, surface and subsurface
         strata) or otherwise relating to the manufacture, processing,
         distribution, use, treatment, storage, Release, transport or
         handling of Hazardous Substances, and all laws and regulations
         with regard to recordkeeping, notification, disclosure and
         reporting requirements respecting Hazardous Substances, and all
         laws relating to endangered or threatened species of fish,
         wildlife and plants and the management or use of natural
         resources; "Hazardous Substance" shall mean:  (i) any
         petrochemical or petroleum products, radioactive materials,
         asbestos in any form that is or could become friable, urea
         formaldehyde foam insulation, transformers or other equipment
         that contain dielectric fluid containing levels of
         polychlorinated biphenyls and radon gas, (ii) any chemicals,
         materials or substances defined as or included in the
         definition of: "hazardous substances," "hazardous wastes,"
         "hazardous materials," "restricted hazardous materials,"
         "extremely hazardous substances," "toxic substances,"
         "contaminants" or "pollutants" or words of similar meaning and
         regulatory effect or (iii) any other chemical, material or
         substance exposure to which is prohibited, limited or regulated
         by any Environmental Law; and "Release" shall mean any release,
         spill, emission, discharge, leaking, pumping, injection,
         deposit, disposal, discharge, dispersal, leaching or migration
         into the indoor or outdoor environment (including ambient air,
         surface water, groundwater and surface or subsurface strata) or
         into or out of any property, including the movement of Hazardous 
         Substances through or in the air, soil, surface water, groundwater 
         or property.

                   Section 3.12.  [Intentionally omitted.]

                                       -15-

                   Section 3.13  Transactions with Affiliates.  As of
         the date hereof, except as set forth in Section 3.13 of the
         DOCP Disclosure Schedule, (a) there are no outstanding amounts
         payable to or receivable from, or advances by DOCP or any DOCP
         Subsidiary to, and neither DOCP nor any DOCP Subsidiary is
         otherwise a creditor of or debtor to, any officer, director,
         consultant or employee of DOCP or any DOCP Subsidiary and (b)
         neither DOCP nor any DOCP Subsidiary is a party to any
         transaction, agreement, arrangement or understanding with any
         officer, director, consultant or employee of DOCP or any DOCP
         Subsidiary, other than, with respect to both clauses (a) and
         (b), items arising out of the ordinary course of employment
         with DOCP or any DOCP Subsidiary.

                   Section 3.14.  Contracts.  Except as set forth in the
         DOCP SEC Reports filed prior to the date hereof, neither DOCP
         nor any DOCP Subsidiary is a party to or bound by (a) any
         "material contract" (as such term is defined in Item 601(b)(10)
         of Regulation S-K of the SEC), (b) any non-competition
         agreement or any other agreement or obligation which purports
         to limit in any material respect the manner in which, or the
         localities in which, all or any material portion of the
         business of DOCP and the DOCP Subsidiaries, taken as a whole,
         is or would be conducted or (c) any contract or other agreement
         which would prohibit or materially delay the consummation of
         the Merger or any of the transactions contemplated by this
         Agreement.

                   Section 3.15.  Tax Matters.  (a)  Each of DOCP and
         each DOCP Subsidiary has filed all tax returns that it was
         required to file or has obtained extension with respect to any
         unfiled tax returns.  All such tax returns were correct and
         complete in all material respects.  All taxes owed by any of
         DOCP or a DOCP Subsidiary (whether or not shown on any tax
         return) have been paid.  Neither DOCP nor any DOCP Subsidiary
         currently is the beneficiary of any extension of time within
         which to file any tax return.

                   (b)  There is no dispute or claim concerning any
         material tax liability of any of DOCP or the DOCP Subsidiaries
         either (i) claimed or raised by any authority in writing or
         (ii) as to which any of the directors and officers of DOCP or
         the DOCP Subsidiaries has knowledge based upon personal contact
         with any agent of such authority.

                   (c)  None of DOCP nor the DOCP Subsidiaries (i) is a
         party to any tax allocation or sharing agreement, (ii) has been
         a member of an affiliated group (within the meaning of Section
         1504(a) of the Code) filing a consolidated income tax return
         (other than a group the common parent of which was DOCP) or
         (iii) has any liability for the taxes of any person (other than
         DOCP or a DOCP Subsidiary) under Treasury Regulation Section
         1.1502-6 promulgated under the Code (or any similar provision
         of United States state or local, or foreign law), as a
         transferee or successor, by contract, or otherwise.

                   (d)  The unpaid taxes of DOCP and the DOCP
         Subsidiaries as of the Closing Date do not exceed the reserve
         for tax liability (rather than any reserve for deferred taxes 
         established to reflect timing differences between book and
         taxable income) set forth in the most recent audited balance
         sheets contained in DOCP SEC Reports filed with the SEC prior
         to the date of this Agreement.

                                     -16-

                   (e)  The United States federal income tax returns of
         DOCP and the DOCP Subsidiaries have not been audited by the IRS
         through the fiscal year since at least 1987.

                   (f)  Neither DOCP nor any DOCP Subsidiary has filed
         an election under Section 341(f) of the Code to be treated as a
         consenting corporation.

                   Section 3.16.  Opinion of Financial Advisor.  The
         DOCP Board has received the opinion of Smith Barney, Inc.,
         dated the date of this Agreement (which will be confirmed in
         writing as promptly as practicable after the date of this
         Agreement), to the effect that, as of such date, the cash
         consideration to be received by the holders of DOCP Shares
         (other than CSX, NSC and the Management Investor and their
         respective affiliates) pursuant to the Offer and the Merger is
         fair to such holders from a financial point of view, a copy of
         which opinion will be delivered to Buyer after receipt thereof
         by DOCP.

                   Section 3.17.  Brokers.  Except as described in
         Section 3.17 of the DOCP Disclosure Schedule, no broker, finder
         or investment banker (other than Smith Barney, Inc.) is
         entitled to any brokerage, finder's or other fee or commission
         in connection with the transactions contemplated hereby based
         upon arrangements made by or on behalf of DOCP.  DOCP has
         heretofore furnished to Buyer a complete and correct copy of
         all agreements between DOCP and Smith Barney, Inc. pursuant to
         which such firm would be entitled to any payment, reimbursement
         or indemnification from DOCP or otherwise relating to the
         transactions contemplated hereby.

                   Section 3.18.  Information Supplied.  None of the
         information supplied or to be supplied by DOCP for inclusion or
         incorporation by reference in the Schedule 14D-1 or the
         Schedule 13E-3 will, at the date such documents are first
         published, sent or delivered to shareholders or, unless
         promptly corrected, at any time during the pendency of the
         Offer, contain any untrue statement of a material fact or omit
         to state any material fact required to be stated therein or
         necessary to make the statements therein not misleading.
         Neither the Schedule 14D-9 at the date such document is first
         published, sent or delivered to shareholders or, unless
         promptly corrected, at any time during the pendency of the
         Offer, nor the Proxy Statement (if applicable) at the date such
         document is first published, sent or delivered to shareholders
         or, unless promptly corrected, at any time during the pendency
         of the Merger Meeting, contain any untrue statement of a
         material fact or omit to state any material fact required to be
         stated therein or necessary in order to make the statements
         therein, in light of the circumstances under which they are
         made, not misleading.  The Schedule 14D-9 and the Proxy
         Statement (if applicable) will comply as to form in all
         material respects with the requirements of the Exchange Act.
         Notwithstanding the foregoing, no representation or warranty is
         made by DOCP with respect to statements made or incorporated by
         reference therein based on information supplied by LLC, Buyer,
         CSX, NSC or the Management Investor (acting in such capacity)
         for inclusion or incorporation by reference in any of the
         foregoing documents.

                   Section 3.19.  State Takeover Statutes.  DOCP and the
         DOCP Board have taken all action necessary or advisable so as
         to render inoperative with respect to the transactions 
         contemplated hereby (including the Offer and the Merger) all
         applicable state anti-takeover 
         
                                     -17-

         statutes and all anti-takeover provisions of the organizational 
         documents of DOCP and each DOCP Subsidiary.  Without limiting the 
         generality of the foregoing, DOCP and the DOCP Board have taken 
         all actions necessary to exempt all future transactions contemplated 
         by this Agreement (including the Offer and the Merger), on the one
         hand, and each of the other parties and their respective
         "affiliates" and "associates" (each as defined in Section 912
         of the New York Law), on the other hand, from the provisions of
         such Section 912 of the New York Law. 


                                    ARTICLE IV

                REPRESENTATIONS AND WARRANTIES OF BUYER, CSX, NSC
                           AND THE MANAGEMENT INVESTOR

                   Each of LLC, Buyer, CSX, NSC and the Management
         Investor (except, as regards the Management Investor, with
         respect to Section 4.1) hereby represents and warrants (or, in
         the cases of LLC and Buyer, will be deemed to represent and
         warrant upon their respective formations) to each of the other
         parties hereto that:

                   Section 4.1.  Organization and Qualification.  Such
         person is a corporation, duly incorporated, validly existing
         and in good standing under the laws of the jurisdiction of its
         incorporation or organization and has the requisite power and
         authority and all necessary governmental approvals to own,
         lease and operate its properties and to carry on its business
         as it is now being conducted, except where the failure to be so
         organized, existing or in good standing or to have such power,
         authority and governmental approvals could not reasonably be
         expected to, individually or in the aggregate, have a material
         adverse effect on the ability of such party to consummate the
         transactions contemplated hereby (a "Buyer Material Adverse
         Effect").  Such person is not in violation of any provision of
         its certificate of incorporation, bylaws or equivalent
         organizational documents.  

                   Section 4.2.  Authority Relative to This Agreement.
         Such person has all necessary power and authority to execute
         and deliver this Agreement, to perform its obligations
         hereunder and to consummate the transactions contemplated
         hereby.  The execution and delivery of this Agreement by such
         person and the consummation by such person of the transactions
         contemplated hereby have been duly and validly authorized by
         all necessary corporate action (and in the case of the
         Management Investor, all necessary action) and no other
         corporate proceedings on the part of such person (and, in the
         case of the Management Investor, no other proceedings) are
         necessary to authorize this Agreement or to consummate the
         transactions contemplated hereby (other than the filing and
         recordation of appropriate merger documents as required by the
         New York Law).  This Agreement has been duly and validly
         executed and delivered by such person, and, assuming the due
         authorization, execution and delivery by the other parties
         hereto, constitutes the legal, valid and binding obligation of
         such person, enforce able against such person in accordance
         with its terms.

                   Section 4.3.  No Conflict; Required Filings and
         Consents.  (a)  The execution and delivery of this Agreement by
         such person do not, and the performance of this Agreement and
         the transactions contemplated hereby by such person, will not
         (i) other than with respect to the 

                                       -18-<PAGE>
                                         
         Management Investor, conflict with or violate the certificate
         of incorporation or bylaws or equivalent organizational
         documents of such person, (ii) conflict with or violate any
         law, rule, regulation, order, judgment or decree applicable to
         such person or by which any property or asset of such person is
         bound or affected or (iii) result in any breach of or
         constitute a default (or an event which, with notice or lapse
         of time or both, would become a default) under, result in the
         loss of a material benefit under or give to others any right of
         termination, amendment, acceleration, increased payments or
         cancellation of, or result in the creation of a lien or other
         encumbrance on any property or asset of such person pursuant
         to, any note, bond, mortgage, indenture, contract, agreement,
         lease, license, permit, franchise or any other instrument or
         obligation to which such person is a party or by which such
         person or any property or asset of such person is bound or
         affected, except in the case of clauses (ii) and (iii), for any
         such conflicts, violations, breaches, defaults or other
         occurrences as could not reasonably be expected to,
         individually or in the aggregate, have a Buyer Material Adverse
         Effect.

                   (b)  The execution and delivery of this Agreement by
         such person do not, and the performance of this Agreement and
         the consummation of the transactions contemplated hereby by
         such person will not, require any consent, approval,
         authorization or permit of, or filing with or notification to,
         any Governmental Entity, except (i) for (A) applicable
         disclosures, if any, under the Exchange Act, (B) the
         requirements of the HSR Act, if applicable, and (C) filing and
         recordation of appropriate merger and similar documents as
         required by the New York Law and (ii) where failure to obtain
         such consents, approvals, authorizations or permits, or to make
         such filings or notifications, could not reasonably be expected
         to, individually or in the aggregate, have a Buyer Material
         Adverse Effect.

                   Section 4.4.  Information Supplied.  None of the
         information supplied or to be supplied by such person for
         inclusion or incorporation by reference in the Schedule 14D-9
         or the Proxy Statement (if applicable) will, at the date such
         documents are first published, sent or delivered to
         shareholders or, unless promptly corrected, at any time during
         the pendency of the Offer, contain any untrue statement of a
         material fact required to be stated therein or necessary to
         make the statements therein not misleading.  None of the
         Schedule 14D-1 nor the Schedule 13E-3 will, at the date such
         document is first published, sent or delivered to shareholders
         or, unless promptly corrected,  at any time during the pendency
         of the Offer, contain any untrue statement of a material fact
         or omit to state any material fact required to be stated
         therein or necessary in order to make the statements therein,
         in light of the circumstances under which they are made, not
         misleading.  The Schedule 14D-1 and the Schedule 13E-3 will
         comply as to form in all material respects with the
         requirements of the Exchange Act and the rules and regulations
         thereunder.  Notwithstanding the foregoing, no representation
         or warranty is made by such person with respect to statements
         made or incorporated by reference therein based on information
         supplied by DOCP for inclusion or incorporation by reference in
         any of the foregoing documents.

                   Section 4.5.  Brokers.  No broker, finder or
         investment banker is entitled to any brokerage, finder's or
         other fee or commission in connection with the transactions
         contemplated hereby based upon arrangements made by or on
         behalf of such person.

                                       -19-<PAGE>
                                         
                                    ARTICLE V

                  COVENANTS RELATING TO THE CONDUCT OF BUSINESS 

                   Section 5.1.  Conduct of Business by DOCP Pending the
         Merger.  Except as set forth in this Agreement or in Section
         5.1 of the DOCP Disclosure Schedule, during the period from the
         date of this Agreement to the Effective Time, other than with
         LLC's prior written consent, DOCP and each DOCP Subsidiary
         shall not, voluntarily or involuntarily, (a) take any action,
         regulatory or otherwise, inconsistent with facilitating
         consummation of the transactions contemplated hereby or (b)
         take any of the following actions:

                   (i)  conduct its business in any manner other than in
              the ordinary course of business consistent with past
              practice and in compliance in all material respects with
              all applicable laws and regulations, and, to the extent
              consistent therewith, shall not fail to use all reasonable
              efforts to preserve intact their current business
              organizations, use reasonable efforts to keep available
              the services of their current officers and other key
              employees as a group and preserve their relationships with
              those persons having business dealings with them to the
              end that their goodwill and ongoing businesses shall be
              unimpaired at the Effective Time;

                  (ii)  adopt, propose or agree to any amendment to its
              articles of incorporation, laws or other comparable
              organizational documents;

                 (iii)  issue, deliver, sell, pledge, or otherwise
              encumber (A) any shares of DOCP's or any DOCP Subsidiary's
              capital stock or any rights, warrants or options to
              acquire any such shares (other than the issuance of DOCP
              Shares in connection with the exercise of DOCP Stock
              Options or Warrants outstanding as of the date of this
              Agreement and in accordance with the terms of such DOCP
              Stock Options or the Warrants, as the case may be, or upon
              conversion of the Convertible Debt in accordance with its
              terms, in each case, in effect on the date of this
              Agreement) or (B) any material assets or properties;

                  (iv)  other than dividends and distributions
              (including liquidating distributions) by a direct or
              indirect wholly owned subsidiary of DOCP to its parent,
              (A) declare, set aside, make or pay any dividend or other
              distribution, payable in cash, stock, property or
              otherwise, in respect of any capital stock or (B)
              subdivide, reclassify, recapitalize, split, combine or
              exchange any shares of capital stock of DOCP or any DOCP
              Subsidiary; (C) issue or authorize the issuance of any
              other securities in respect of, in lieu of or in
              substitution for shares of capital stock of DOCP or any
              DOCP Subsidiary; (D) purchase, redeem or otherwise acquire
              any capital stock of DOCP or any DOCP Subsidiary or any
              other securities thereof, or any rights, warrants or
              options to acquire any such shares or other securities;

                   (v)  (A) incur any indebtedness for borrowed money or
              guarantee any such indebtedness of another person, issue
              or sell any debt securities or warrants or other rights 

                                       -20-<PAGE>
                                         
              to acquire any debt securities of DOCP or any DOCP
              Subsidiary, guarantee any debt securities of another
              person, enter into any "keep well" or other agreement to
              maintain any financial statement condition of another
              person, or enter into any arrangement having the economic
              effect of any of the foregoing, except for short-term
              borrowings incurred in the ordinary course of business
              consistent with past practice and pursuant to existing
              agreements, or (B)  make any loans, advances or capital
              contributions to, or investments in, any other person,
              other than to DOCP or any DOCP Subsidiary;

                  (vi)  except for expenditures made under the DOCP
              capital budget described in DOCP SEC Reports filed prior
              to the date hereof, make or agree to make any new capital
              expenditure or new capital expenditures which individually
              is in excess of $50,000 or in the aggregate is in excess
              of $100,000; 

                 (vii)  increase the compensation payable or to become
              payable to its executive officers, employees or
              consultants, or grant any bonus, incentive, severance or
              termination pay to, or enter into any commission, bonus,
              incentive, employment or severance agreement with, any
              director, executive officer or consultant of it or any of
              its subsidiaries, or establish, adopt, enter into or amend
              in any material respect or take action to accelerate any
              rights or benefits under any collective bargaining
              agreement or any DOCP Plan, agreement or policy;

                (viii)  make any change to its accounting methods,
              principles or practices, except as may be required by
              general accounting principles or take any other action,
              other than reasonable and usual actions in the ordinary
              course of business and consistent with past practice, with
              respect to accounting policies or procedures (including
              tax accounting policies and procedures);

                  (ix)  make any material tax election or settle or
              compromise any material income tax liability;

                   (x)  enter into, modify, amend or terminate any
              material contract, agreement, right or privilege involving
              the assets or properties of DOCP or to which DOCP or any
              DOCP Subsidiary is a party, or waive, release or assign
              any material rights or claims thereunder;

                  (xi)  acquire by merger or consolidation, or by
              purchase of assets, or by any other manner, any business;

                 (xii)  mortgage or otherwise encumber or subject to any
              lien any of its properties or assets; 

                (xiii)  pay, discharge, settle or satisfy any material
              claims, liabilities or obligations (whether absolute,
              accrued, asserted or unasserted, contingent or otherwise),
              other than the payment, discharge, settlement or
              satisfaction of such claims, liabilities or obligations in
              the ordinary course of business consistent with past
              practice or in accordance with their terms;

                                       -21-<PAGE>
                                        
                 (xiv)  (A) enter into any agreement containing any
              provision or covenant limiting in any material respect the
              ability to compete with any person which would bind any
              party hereto (or its operations) after the Effective Time
              or (B) except to the extent required by any existing
              contract or agreement disclosed in Section 5.1 of the DOCP
              Disclosure Schedule, acquire any interest in any railroad
              line or terminal facility or dispose of any interest in
              any railroad line or terminal facility owned, used or
              operated by DOCP or any DOCP Subsidiary (including through
              a grant of concessions or trackage rights); or 

                  (xv)  authorize or commit or agree to take any of the
              foregoing actions.

                   Section 5.2.  Other Actions.  DOCP shall not, and
         shall not permit any of the DOCP Subsidiaries to, take any
         action that would, or that could reasonably be expected to,
         result in (a) any of the representations and warranties of DOCP
         set forth in this Agreement that are qualified as to
         materiality becoming untrue, (b) any of such representations
         and warranties that are not so qualified becoming untrue in any
         material respect or (c) except as otherwise permitted by
         Section 6.2, any of the conditions to the Offer set forth in
         Annex I or any of the conditions to the Merger set forth in
         Article VII not being satisfied.


                                    ARTICLE VI

                               ADDITIONAL COVENANTS

                   Section 6.1.  Access to Information; Confidentiality.
         (a)  From the date hereof through the Effective Time (subject
         to applicable law), DOCP shall (and shall cause its
         subsidiaries and officers, directors, employees, auditors and
         agents to) afford the officers, employees and agents of each of
         the other parties hereto and its respective subsidiaries (the
         "Respective Representatives") reasonable access at all
         reasonable times to its officers, employees, agents,
         properties, offices, plants and other facilities, books and
         records, and shall furnish such Respective Representatives with
         all financial, operating and other data and information as may
         be reasonably requested.  All such information obtained will be
         subject to the following confidentiality arrangements between
         DOCP and each of the other parties hereto:

                   (i)  None of the parties hereto nor any of their
              Respective Representatives shall disclose any Confidential
              Information to any person without the consent of the other
              parties, other than (A) to the other parties hereto or
              their Respective Representatives and their officers,
              directors, partners, employees, agents and advisors, and
              then only on a confidential basis, or (B) as required by
              any law, rule or regulation or judicial process, provided
              that such party shall, unless prohibited by applicable law
              or regulation or court order, give notice to the party of
              such requirement to disclose Confidential Information,
              and, if practicable, such  notice shall be given prior to
              such disclosure, provided, however, that the failure to
              give such notice shall not prohibit such disclosure.

                  (ii)  Confidential Information" means information
              furnished by the parties hereto to one another designated
              as confidential, but does not include any such information
              that is or becomes generally available to the public other
              than as a result of a breach by any of

                                       -22-<PAGE>
                                        
              the parties hereto of their obligations hereunder or that
              is or becomes available to a party hereunder from a source
              other than any of the other parties hereunder that is not,
              to the best of such party's knowledge, acting in violation
              of a confidentiality agreement with any of the parties
              hereto.  

                   (b)  No investigation pursuant to this Section shall
         affect any representation or warranty in this Agreement of any
         party hereto or any condition to the obligations of the parties
         hereto.

                   Section 6.2.  No Solicitation.  DOCP shall not, nor
         shall it permit any DOCP Subsidiary, or its or any DOCP
         Subsidiary officers, directors, employees, agents or
         representatives (including, without limitation, any investment
         banker, attorney or accountant) to, initiate, solicit or
         encourage, directly or indirectly, any inquiries or the making
         of any proposal with respect to an Alternative Transaction,
         engage in any discussions or negotiations concerning, or
         provide to any other person any information or data relating to
         it or any DOCP Subsidiary for the purposes of, or otherwise
         cooperate in any way with or assist or participate in,
         facilitate or encourage, any inquiries or the making of any
         proposal which constitutes, or may reasonably be expected to
         lead to, a proposal to seek or effect an Alternative
         Transaction, or agree to or endorse any Alternative
         Transaction; provided, however, that nothing contained in this
         Section shall prohibit DOCP or the DOCP Board from taking and
         disclosing to its shareholders a position as required by
         Exchange Act Rule 14e-2; and provided further that, prior to
         acceptance for payment of any DOCP Shares pursuant to the
         Offer, the DOCP Board, on behalf of DOCP, may, in response to
         an unsolicited, bona fide Superior Proposal, furnish
         information or data (including confidential information or
         data) relating to DOCP and participate in negotiations with a
         person making such unsolicited Superior Proposal, but only
         after such person enters into arrangements regarding
         confidentiality on terms at least as favorable to DOCP as the
         confidentiality arrangements contained herein and only in the
         event that (a) the DOCP Board determines in good faith, on the
         basis of advice of independent counsel furnished prior thereto
         to Buyer, that such action is legally required by the fiduciary
         obligations of the DOCP Board and (b) DOCP advises Buyer of its
         intention to make such determination to do so prior thereto.
         DOCP shall promptly advise Buyer of, and communicate the terms
         of, any proposal respecting an Alternative Transaction it may
         receive, or any inquiries it receives which may reasonably be
         expected to lead to a proposal respecting an Alternative
         Transaction, and the identity of the person making such
         proposal.  Prior to taking any such action, if DOCP intends to
         participate in any such discussion or negotiation or provide
         any such information or data to any such third party, it shall
         give reasonable notice to Buyer and shall consult, and
         thereafter shall continue to consult, with Buyer.
         Notwithstanding the foregoing, nothing in this Section 6.2
         shall (a) permit DOCP to enter into any agreement with respect
         to or to facilitate an Alternative Transaction during the term
         of this Agreement (it being understood that DOCP shall not
         enter into any agreement with any person that provides for, or
         in any way facilitates, the development of a proposal for an
         Alternative Transaction, other than a confidentiality agreement
         in customary form in respect of a Superior Proposal as
         described above) or (b) affect any other obligation of DOCP
         under this Agreement.  "Alternative Transaction" means a
         transaction or series of related transactions resulting in (a)
         any change of control of DOCP, (b) any merger or consolidation
         of DOCP in which another person acquires 25% or more of the
         aggregate voting power of all voting securities of it or the
         surviving corporation, as the

                                       -23-<PAGE>
                                        
         case may be, (c) any tender offer or exchange offer for, or any
         acquisitions of, any securities of DOCP which, if consummated,
         would result in another person owning 25% or more of the
         aggregate voting power of all voting securities of it or (d)
         any sale or other disposition of assets of DOCP or any of its
         subsidiaries if the Fair Market Value of such assets exceeds
         25% of the aggregate Fair Market Value of the assets of DOCP
         and all DOCP Subsidiaries taken as a whole before giving effect
         to such sale or other disposition.  The "Fair Market Value" of
         any assets or securities means the fair market value of such
         assets or securities, as determined by the DOCP Board in good
         faith.  "Superior Proposal" means a bona fide proposal made by
         a third party for an Alternative Transaction on terms which the
         DOCP Board determines in its good faith judgment to be more
         favorable to DOCP's shareholders than the Offer and the Merger
         and for which financing, to the extent required, is then
         committed or which, in the good faith judgment of the DOCP
         Board, is reasonably capable of being obtained by such third
         party.

                   Section 6.3.  Indemnification, Exculpation and
         Insurance.  (a)  Buyer, CSX, NSC and the Management Investor
         agree that all rights to indemnification and exculpation from
         liabilities for acts or omissions occurring at or prior to the
         Effective Time now existing in favor of the current or former
         directors or officers of DOCP and the DOCP Subsidiaries
         (collectively, the "Indemnified Parties"), as provided in their
         respective certificates of incorporation or bylaws (or
         comparable organizational documents) and any indemnification
         agreements of DOCP, the existence of which does not constitute
         a breach of this Agreement, shall be assumed by the Surviving
         Corporation in the Merger without further action as of the
         Effective Time, and shall survive the Merger and shall continue
         in full force and effect in accordance with their respective
         terms.

                   (b)  For a period of one year after the Effective
         Time, the Surviving Corporation shall cause to be maintained in
         effect the current policies of directors' and officers'
         liability insurance maintained by DOCP (provided that the
         Surviving Corporation may substitute therefor policies of at
         least the same coverage and amounts containing terms and
         conditions which are, in the aggregate, not less advantageous
         to such officers and directors) with respect to claims arising
         from facts or events which occurred before the Effective Time;
         provided, however, that in no event shall the Surviving
         Corporation be required to expend pursuant to this Section 6.3
         more than an amount equal to 150% of the current annualized
         premiums paid by DOCP for such insurance (which premiums DOCP
         represents and warrants to be approximately $100,000 for 1997,
         in the aggregate on an annualized basis).

                   Section 6.4.  Notification of Certain Matters.  DOCP
         shall give prompt notice to Buyer, and Buyer shall give prompt
         notice to DOCP, of (a) the occurrence, or non-occurrence, of
         any event the occurrence, or non-occurrence, of which would be
         likely to cause (i) any representation or warranty contained in
         this Agreement to be untrue or inaccurate or (ii) any covenant,
         condition or agreement contained in this Agreement not to be
         complied with or satisfied and (b) any failure of DOCP or
         Buyer, as the case may be, to comply with or satisfy any
         covenant, condition or agreement to be complied with or
         satisfied by it hereunder; provided, however, that the delivery
         of any notice pursuant to this Section 6.4 shall not limit or
         otherwise affect the remedies available hereunder to the party
         receiving such notice.

                                       -24-<PAGE>
                                        
                   Section 6.5.  Further Action; Best Efforts.  (a)
         Upon the terms and subject to the conditions hereof, each of
         the parties hereto shall (i) make promptly its respective
         filings, and thereafter make any other required submissions,
         under any applicable laws with respect to the transactions
         contemplated hereby and shall not make any filing or
         submission, or take any position, in connection with regulatory
         authorities (in respect of the transactions contemplated hereby
         or otherwise) without the consent of the Management Investor,
         CSX and NSC and (ii) use its best efforts to take, or cause to
         be taken, all appropriate action, and to do, or cause to be
         done, all things necessary, proper or advisable under
         applicable laws and regulations or otherwise to consummate and
         make effective the transactions contemplated hereby.

                   (b)  In connection with, and without limiting the
         foregoing, each of the parties hereto shall (i) take all
         actions necessary to ensure that no state anti-takeover statute
         or similar statute or regulation is or becomes operative with
         respect to this Agreement, the Offer, the Merger or any other
         transaction contemplated by this Agreement and (ii) if any
         state anti-takeover statute or similar statute or regulation is
         or becomes operative with respect to this Agreement, the Offer,
         the Merger or any other transaction contemplated by this
         Agreement, take all actions necessary to ensure that this
         Agreement, the Offer, the Merger and any other transactions
         contemplated by this Agreement may be consummated as promptly
         as practicable on the terms contemplated by this Agreement and
         otherwise to minimize the effect of such statute or regulation
         on the Merger, the Offer and the other transactions
         contemplated by this Agreement.

                   Section 6.6.  Public Announcements.  The parties
         hereto shall consult with each other before issuing any press
         release or otherwise making any public statements with respect
         to this Agreement or the transactions contemplated hereby, and
         shall not issue any such press release or make any such public
         statement without the prior consent of the other parties, which
         consent shall not be unreasonably withheld; provided, however,
         that a party may, without the prior consent of the other
         parties, issue such press release or make such public statement
         as may be required by law or any listing agreement or
         arrangement to which such party is bound with a national
         securities exchange or The Nasdaq Stock Market if it has used
         reasonable efforts to consult with the other parties and to
         obtain such parties' consent but has been unable to do so in a
         timely manner.

                   Section 6.7.  Conveyance Taxes.  Buyer and DOCP shall
         cooperate in the preparation, execution and filing of all
         returns, questionnaires, applications, or other documents
         regarding any real property transfer or gains, sales, use,
         transfer, value added, stock transfer and stamp taxes, any
         transfer, recording, registration and other fees, and any
         similar taxes which become payable in connection with the
         transactions contemplated hereby that are required or permitted
         to be filed on or before the Effective Time.

                                       -25-<PAGE>
                                        
                                   ARTICLE VII

                                CLOSING CONDITIONS

                   Section 7.1.  Conditions to Obligations of Each Party
         to Effect the Merger.  The respective obligations of each of
         DOCP and Buyer to effect the Merger shall be subject to the
         satisfaction or waiver of the following conditions prior to the
         Effective Time:

                   (a)  Shareholder Approval.  If required by the New
              York Law, this Agreement and the Merger shall have been
              approved and adopted by the requisite vote of DOCP
              shareholders.

                   (b)  No Order.  No Governmental Entity or United
              States federal or state court of competent jurisdiction
              shall have enacted, issued, promulgated, enforced or
              entered any statute, rule, regulation, executive order,
              decree, injunction or other order (whether temporary,
              preliminary or permanent) which is in effect and which
              materially restricts, prevents or prohibits consummation
              of the transactions contemplated hereby; provided,
              however, that the parties shall use their reasonable
              efforts to cause any such decree, judgment, injunction or
              other order to be vacated or lifted.

                   (c)  Other Approvals.  Other than the filing of
              Merger documents in accordance with the New York Law, all
              authorizations, consents, waivers, orders or approvals
              required to be obtained, and all filings, notices or
              declarations required to be made, by any of the parties
              hereto prior to the consummation of the Merger, shall have
              been obtained from, and made with, all required
              Governmental Entities, except for such authorizations,
              consents, waivers, orders, approvals, filings, notices or
              declarations the failure to obtain or make which would not
              have a DOCP Material Adverse Effect or a Buyer Material
              Adverse Effect.

                   Section 7.2.  Conditions to Obligations of DOCP to
         Effect the Merger.  Prior to consummation of the Offer, the
         obligations of DOCP to effect the Merger shall be subject to
         the satisfaction or waiver of the following conditions prior to
         the Effective Time:

                   (a)  Compliance.  None of LLC, Buyer, CSX, NSC or the
              Management Investor shall have breached or failed to
              observe or perform in any material respect any of its
              covenants or agreements in favor of DOCP hereunder to be
              performed by it at or prior to the Effective Time, and the
              representations and warranties of LLC, Buyer, CSX, NSC and
              the Management Investor set forth herein shall be true and
              accurate both when made and at and as of the Effective
              Time, as if made at and as of such time (except to the
              extent expressly made as of an earlier date, in which case
              as of such date), except where the breach or failure to
              observe or perform such covenants and agreements, or the
              failure of such representations and warranties to be so
              true and correct (without giving effect to any limitation
              as to "materiality" or "material adverse effect" or
              similar language set forth therein), does not, and is not
              likely to, individually or in the aggregate, prevent
              consummation of the Merger.

                                       -26-<PAGE>
                                        
                   Section 7.3.  Conditions to Obligations of Buyer to
         Effect the Merger.  The obligations of Buyer to effect the
         Merger shall be subject to the satisfaction or waiver of the
         following conditions prior to the Effective Time:

                   (a)  Compliance.  DOCP shall not have breached or
              failed to observe or perform in any material respect any
              of its covenants or agreements hereunder to be performed
              by it at or prior to the Effective Time, and the
              representations and warranties of DOCP set forth herein
              shall be true and accurate both when made and at and as of
              the Effective Time, as if made at and as of such time
              (except to the extent expressly made as of an earlier
              date, in which case as of such date), except where the
              breach or failure to observe or perform such covenants and
              agreements, or the failure of such representations and
              warranties to be so true and correct (without giving
              effect to any limitation as to "materiality" or "material
              adverse effect" or similar language set forth therein),
              does not have, and is not likely to have, individually or
              in the aggregate, a DOCP Material Adverse Effect or a
              Buyer Material Adverse Effect.

                   (b)  No Material Adverse Change.  At any time after
              the date of this Agreement, there shall not have occurred
              any DOCP Material Adverse Effect.

                   Section 7.4.  Frustration of Closing Conditions.  No
         party hereto may rely on the failure of any condition set forth
         in this Article to be satisfied if such failure was caused by
         such party's failure to use reasonable efforts to consummate
         the transactions contemplated by this Agreement.


                                   ARTICLE VIII

                        TERMINATION, AMENDMENT AND WAIVER

                   Section 8.1.  Termination.  This Agreement may be
         terminated at any time prior to the Effective Time, in the case
         of Buyer, or prior to the purchase of DOCP Shares under the
         Offer, in the case of DOCP, whether before or after approval of
         this Agreement and the Merger by the shareholders of DOCP:

                   (a)  by mutual consent of DOCP and Buyer;

                   (b)  (i) by Buyer upon a breach of any covenant or
              agreement on the part of DOCP set forth in this Agreement
              which has not been cured, or if any representation or
              warranty of DOCP shall have become untrue, in either case,
              such that such breach or untruth is incapable of being
              cured within 30 days after the giving of written notice to
              DOCP of such breach or untruth, provided that such breach
              or untruth is material and that Buyer is not then in
              material breach of this Agreement or (ii) by DOCP in the
              event of a breach of any representation, warranty,
              agreement or covenant of Buyer set forth in this
              Agreement, in any case, such that such breach has not been
              cured within 30 days after the giving of written notice to
              Buyer of such breach or untruth and will prevent
              consummation of the Merger, provided that DOCP is not then
              in material breach of this Agreement;

                                       -27-<PAGE>
                                        
                   (c)  by either Buyer or DOCP, if any permanent
              injunction or action by any Governmental Entity preventing
              the consummation of the Merger shall have become final and
              nonappealable, provided that the party seeking to
              terminate this Agreement pursuant to this clause (c) shall
              have used all reasonable efforts to prevent the entry of
              and to remove such permanent injunction or action;

                   (d)  by either Buyer or DOCP, if the Merger shall not
              have been consummated before June 30, 1998, provided that
              the right to terminate this Agreement pursuant to this
              clause (d) shall not be available to any party whose
              failure to perform any of its obligations hereunder
              results in the failure of the Merger to be consummated by
              such date;

                   (e)  by Buyer (i) if the DOCP Board or any committee
              thereof shall withdraw, modify or change its
              recommendation so that it is not in favor of this
              Agreement, the Offer or the Merger (or make any
              recommendation in favor of an Alternative Transaction) or
              shall have resolved to do any of the foregoing or (ii) if
              DOCP shall take any action that would be proscribed by
              Section 6.2 of this Agreement but for the exceptions
              contained in the provisions thereof; or

                   (f)  by Buyer if the DOCP Board or any committee
              thereof shall have approved or entered into an agreement
              respecting a Superior Proposal or recommended or resolved
              to recommend to its shareholders a Superior Proposal, or
              by DOCP in connection with the DOCP Board or any committee
              thereof approving or entering into an agreement respecting
              a Superior Proposal, provided that, in the case of any
              such termination by DOCP, simultaneously with such
              termination, DOCP complies with Section 8.5(b) of this
              Agreement and prior thereto has complied with Section 6.2
              of this Agreement and provided, further, that the party
              seeking to terminate under this clause (f) is not then in
              material breach of this Agreement.

         The right of any party hereto to terminate this Agreement
         pursuant to this Section shall remain operative and in full
         force and effect regardless of any investigation made by or on
         behalf of any party hereto, any person controlling any such
         party, or any of their respective officers or directors,
         whether prior to or after the execution of this Agreement.

                   Section 8.2.  Effect of Termination.  Except as
         provided in Section 8.5 or Section 9.1, in the event of the
         termination of this Agreement pursuant to Section 8.1, this
         Agreement shall forthwith become void, there shall be no
         liability on the part of any party hereto, or any of their
         respective officers or directors, to the other and all rights
         and obligations of any party hereto shall cease; provided,
         however, that nothing herein shall relieve any party from
         liability for the willful breach of any of its representations,
         warranties, covenants or agreements set forth in this
         Agreement.

                   Section 8.3.  Amendment.  This Agreement may be
         amended by the parties hereto at any time prior to the
         Effective Time; provided, however, that, after approval of this
         Agreement and the Merger by the shareholders of DOCP, no
         amendment, which under applicable law may not be made without
         the approval of the shareholders of DOCP, may be made without
         such 

                                       -28-<PAGE>
                                        
         approval.  This Agreement may not be amended except by an
         instrument in writing signed by the parties hereto.

                   Section 8.4.  Waiver.  At any time prior to the
         Effective Time, any party hereto may (a) extend the time for
         the performance of any of the obligations or other acts of the
         other party hereto, (b) waive any inaccuracies in the
         representations and warranties of the other party contained
         herein or in any document delivered pursuant hereto or (c)
         waive compliance by the other party with any of the agreements
         or conditions contained herein.  Any such extension or waiver
         shall be valid only if set forth in an instrument in writing
         signed by the party or parties to be bound thereby.

                   Section 8.5.  Fees, Expenses and Other Payments.  (a)
         Except as otherwise provided in this Agreement, all costs and
         expenses, including, without limitation, fees and disbursements
         of counsel, financial advisors and accountants, incurred by the
         parties hereto shall be borne solely and entirely by the party
         which has incurred such costs and expenses (with respect to
         such party, its "Expenses"); provided that, except in the event
         that the payment provided in Section 8.5(b) becomes payable, if
         DOCP breaches any material term of this Agreement or if the
         Merger is not consummated, and this Agreement is thereafter
         terminated, and within one year of the date of such termination
         DOCP enters into an agreement respecting an Alternative
         Transaction, DOCP shall pay the reasonable fees and expenses of
         one firm of legal counsel advising the Management Investor, up
         to $50,000, plus 50% of any such fees in excess of $50,000, for
         the benefit of the Management Investor in connection with the
         transactions contemplated hereby.

                   (b)  If (i) this Agreement shall be terminated by
         Buyer pursuant to Section 8.1(e) or by Buyer or DOCP pursuant
         to Section 8.1(f), or (ii) (A) after the date of this Agreement
         any person or "group" (within the meaning of Section 13(d)(3)
         of the Exchange Act) shall have publicly made a proposal with
         respect to an Alternative Transaction, (B) the Offer shall have
         remained open until at least the scheduled expiration date
         immediately following the date such proposal is made, (C) the
         Minimum Condition shall not have been satisfied at the
         expiration of the Offer and (D) this Agreement shall thereafter
         be terminated pursuant to Section 8.1(d), then DOCP shall pay
         to Buyer $3,000,000 plus all Expenses of Buyer, CSX, NSC and
         the Management Investor as promptly as practicable but not
         later than two business days after termination of this
         Agreement (unless required simultaneously with termination
         under Section 8.1(f)) by wire transfer of immediately available
         funds to an account designated by Buyer.

                                    ARTICLE IX

                                GENERAL PROVISIONS

                   Section 9.1.  Effectiveness of Representations,
         Warranties and Agreements.  (a)  Except as set forth in Section
         9.1(b), the representations, warranties and agreements of each
         party hereto shall remain operative and in full force and
         effect, regardless of any investigation made by or on behalf of
         any other party hereto, any person controlling any such party
         or any of their respective officers or directors, whether prior
         to or after the execution of this Agreement.

                                       -29-<PAGE>
                                        
                   (b)  The representations, warranties and agreements
         in this Agreement shall terminate at the Effective Time or upon
         the termination of this Agreement pursuant to Article VIII,
         except that the agreements set forth in Articles I, II and IX,
         and Section 6.3 shall survive the Effective Time and those set
         forth in Sections 6.1(a), 8.2 and 8.5, and Article IX shall
         survive termination.

                   Section 9.2.  Notices.  All notices and other
         communications given or made pursuant hereto shall be in
         writing and shall be deemed to have been duly given or made as
         of the date delivered or transmitted, and shall be effective
         upon receipt, if delivered personally, mailed by registered or
         certified mail (postage prepaid, return receipt requested) to
         the parties at the following addresses (or at such other
         address for a party as shall be specified by like changes of
         address) or sent by electronic transmission to the telecopier
         number specified below:

                   (a)  If to Buyer:

                        then c/o CSX, NSC and the Management Investor
                        at the respective addresses set forth below;

                   (b)  If to CSX:

                        c/o CSX Corporation
                        One James Center
                        901 East Cary Street
                        Richmond, VA  23219

                        Attention:  Peter J. Shudtz
                        Telecopier No.:  (804) 783-1355

                        with a copy to:

                        Wachtell, Lipton, Rosen & Katz
                        51 West 52nd Street
                        New York, NY  10019

                        Attention:  Pamela S. Seymon
                        Telecopier No.:  (212) 403-2000

                   (c)  If to NSC:

                        Norfolk Southern Corporation
                        Three Commercial Place
                        Norfolk, VA  23510

                        Attention:  William C. Wooldridge 
                        Telecopier No.:  (757) 629-2345

                                       -30-<PAGE>

                                        
                        with a copy to:

                        Skadden, Arps, Slate, Meagher & Flom LLP
                        919 Third Avenue
                        New York, NY  10022

                        Attention:  Eric J. Friedman
                        Telecopier No.:  (212) 735-2000

                   (d)  If to the Management Investor:

                        Walter G. Rich
                        c/o Delaware Otsego Corporation
                        One Railroad Avenue
                        Cooperstown, NY  13326

                        Telecopier No.:  (607) 547-9834

                        with a copy to:

                        Kelley Drye & Warren, LLP
                        101 Park Avenue
                        New York, NY  10178

                        Attention:  Ronald B. Risdon
                        Telecopier No.:  (212) 808-7897

                   (e)  If to DOCP:

                        Delaware Otsego Corporation
                        One Railroad Avenue
                        Cooperstown, NY  13326

                        Attention: General Counsel
                        Telecopier No.:  (607) 547-9834

                        with a copy to:

                        Carter Ledyard & Milburn
                        2 Wall Street
                        New York, NY  10005

                        Attention:  Steven J. Glusband
                        Telecopier No:  (212) 732-3232

                                       -31-<PAGE>
                                        
                   Section 9.3.  Certain Definitions.  For purposes of
         this Agreement, the term:

                   (a)  "affiliate" means a person that, directly or
         indirectly, through one or more intermediaries, controls, is
         controlled by, or is under common control with, the first
         mentioned person;

                   (b)  "business day" means any day other than a day on
         which (i) banks in the State of New York are authorized or
         obligated to be closed or (ii) the SEC is closed;

                   (c)  "control" (including the terms "controlled,"
         "controlled by" and "under common control with") means the
         possession, directly or indirectly or as trustee or executor,
         of the power to direct or cause the direction of the management
         or polices of a person, whether through the ownership of stock
         or as trustee or executor, by contract or credit arrangement or
         otherwise;

                   (d)  "material" means, with respect to a person,
         material to the business, financial condition, results of
         operations, properties, assets or prospects of such person and
         its subsidiaries taken as a whole or materially impairing the
         ability of such person to consummate the transactions
         contemplated hereby (including the Offer and the Merger), and
         the term "materially" has a correlative meaning;

                   (e)  "person" means an individual, corporation,
         partnership, limited liability company, joint venture,
         association, trust, unincorporated organization or other
         entity;

                   (f)  "subsidiary" or "subsidiaries" of any person
         means any corporation, partnership, joint venture or other
         legal entity of which such person (either alone or through or
         together with any other subsidiary) owns, directly or
         indirectly, 50% or more of the stock or other equity interests,
         the holders of which are generally entitled to vote for the
         election of the board of directors or other governing body of
         such corporation or other legal entity; 

                   (g)  "knowledge" of any person which is not an
         individual means the knowledge of such person's executive
         officers after reasonable inquiry; and

                   (h)  "taken as a whole," with respect to any person
         and its subsidiaries, means taken as a whole to the extent of
         such person's interest in each of such subsidiaries. 

                   Section 9.4.  Interpretation.  When a reference is
         made in this Agreement to an Article, Section or Annex, such
         reference shall be to an Article or Section of, or an Annex to,
         this Agreement unless otherwise indicated.  The table of
         contents and headings contained in this Agreement are for
         reference purposes only and shall not affect in any way the
         meaning or interpretation of this Agreement.  Whenever the
         words "include", "includes" or "including" are used in this
         Agreement, they shall be deemed to be followed by the words
         "without limitation".  The words "hereof", "herein" and
         "hereunder" and words of similar import when used in this
         Agreement shall refer to this Agreement as a whole and not to
         any particular provision of this Agreement.  All terms defined
         in this Agreement shall have the defined meanings when used in 

                                       -32-<PAGE>
                                        
         any certificate or other document made or delivered pursuant
         hereto unless otherwise defined therein.  The definitions
         contained in this Agreement are applicable to the singular as
         well as the plural forms of such terms and to the masculine as
         well as to the feminine and neuter genders of such term.  Any
         agreement, instrument or statute defined or referred to herein
         or in any agreement or instrument that is referred to herein
         means such agreement, instrument or statute as from time to
         time amended, modified or supplemented, including (in the case
         of agreements or instruments) by waiver or consent and (in the
         case of statutes) by succession of comparable successor
         statutes and references to all attachments thereto and
         instruments incorporated therein.  References to a person are
         also to its permitted successors and assigns.

                   Section 9.5.  Severability.  If any term or other
         provision of this Agreement is invalid, illegal or incapable of
         being enforced by any rule of law or public policy, all other
         conditions and provisions of this Agreement shall nevertheless
         remain in full force and effect so long as the economic or
         legal substance of the transactions contemplated hereby is not
         affected in any manner materially adverse to any party.  Upon
         such determination that any term or other provision is invalid,
         illegal or incapable of being enforced, the parties hereto
         shall negotiate in good faith to modify this Agreement so as to
         effect the original intent of the parties as closely as
         possible to the fullest extent permitted by applicable law in
         an acceptable manner to the end that the transactions
         contemplated hereby are fulfilled to the extent possible.

                   Section 9.6.  Entire Agreement.  This Agreement,
         together with the Annex, the DOCP Disclosure Schedule and the
         other documents delivered as of the date hereof in connection
         herewith, constitute the entire agreement of the parties and
         supersede all prior agreements and understandings, both written
         and oral, between the parties, or any of them, with respect to
         the subject matter hereof.

                   Section 9.7.  Assignment.  Neither this Agreement nor
         any of the rights, interests or obligations under this
         Agreement shall be assigned, in whole or in part, by operation
         of law or otherwise by any of the parties hereto without the
         prior consent of the other party (other than an assignment by
         CSX, NSC or Buyer to a controlled subsidiary).  Any assignment
         in violation of the preceding sentence shall be void.  Subject
         to the preceding sentence, this Agreement will be binding upon,
         inure to the benefit of, and be enforceable by, the parties and
         their respective successors and assigns.

                   Section 9.8.  Parties in Interest.  This Agreement
         shall be binding upon and inure solely to the benefit of each
         party hereto, and nothing in this Agreement, express or
         implied, is intended to or shall confer upon any person any
         right, benefit or remedy of any nature whatsoever under or by
         reason of this Agreement, except that the provisions of Section
         6.3 should inure to the benefit of the indemnified parties.

                   Section 9.9.  GOVERNING LAW.  THIS AGREEMENT SHALL BE
         GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE
         STATE OF NEW YORK, REGARDLESS OF THE LAWS THAT MIGHT OTHERWISE
         GOVERN UNDER APPLICABLE PRINCIPLES OF CONFLICT OF LAWS THEREOF;
         PROVIDED, HOWEVER, THAT THE LAWS OF THE RESPECTIVE STATES OF
         INCORPORATION OF 

                                       -33-<PAGE>
                                        
         EACH OF THE PARTIES HERETO SHALL GOVERN THE RELATIVE RIGHTS,
         OBLIGATIONS, POWERS, DUTIES AND OTHER INTERNAL AFFAIRS OF SUCH
         PARTY AND ITS BOARD OF DIRECTORS.

                   Section 9.10.  ENFORCEMENT.  THE PARTIES AGREE THAT
         IRREPARABLE DAMAGE WOULD OCCUR AND THAT THE PARTIES WOULD NOT
         HAVE ANY ADEQUATE REMEDY AT LAW IN THE EVENT THAT ANY OF THE
         PROVISIONS OF THIS AGREEMENT WERE NOT PERFORMED IN ACCORDANCE
         WITH THEIR SPECIFIC TERMS OR WERE OTHERWISE BREACHED.  IT IS
         ACCORDINGLY AGREED THAT THE PARTIES SHALL BE ENTITLED TO AN
         INJUNCTION OR INJUNCTIONS TO PREVENT BREACHES OF THIS AGREEMENT
         AND TO ENFORCE SPECIFICALLY THE TERMS AND PROVISIONS OF THIS
         AGREEMENT IN ANY UNITED STATES FEDERAL COURT LOCATED IN THE
         STATE OF NEW YORK OR IN NEW YORK STATE COURT, THIS BEING IN
         ADDITION TO ANY OTHER REMEDY TO WHICH THEY ARE ENTITLED AT LAW
         OR IN EQUITY.  IN ADDITION, EACH OF THE PARTIES HERETO (A)
         CONSENTS TO SUBMIT ITSELF TO THE PERSONAL JURISDICTION OF ANY
         UNITED STATES FEDERAL COURT LOCATED IN THE STATE OF NEW YORK OR
         ANY NEW YORK STATE COURT IN THE EVENT ANY DISPUTE ARISES OUT OF
         THIS AGREEMENT OR ANY OF THE TRANSACTIONS CONTEMPLATED HEREBY,
         (B) AGREES THAT IT WILL NOT ATTEMPT TO DENY OR DEFEAT SUCH
         PERSONAL JURISDICTION BY MOTION OR OTHER REQUEST FOR LEAVE FROM
         ANY SUCH COURT AND (C) AGREES THAT IT WILL NOT BRING ANY ACTION
         RELATING TO THIS AGREEMENT OR ANY OF THE TRANSACTIONS
         CONTEMPLATED HEREBY IN ANY COURT OTHER THAN A FEDERAL COURT
         SITTING IN THE STATE OF NEW YORK OR A NEW YORK STATE COURT.

                   Section 9.11.  Counterparts.  This Agreement may be
         executed in one or more counterparts, and by the different
         parties hereto in separate counterparts, each of which when
         executed shall be deemed to be an original but all of which
         taken together shall constitute one and the same agreement.

                   Section 9.12.  Guarantee.  The obligations hereunder
         with respect to the transactions contemplated hereby shall be
         solely obligations of LLC and Buyer and shall be guaranteed by
         each of CSX and NSC on a 50% basis.  The parties hereto agree
         and understand that, prior to the consummation of the Offer,
         all rights of LLC and Buyer hereunder shall be exercised solely
         by CSX and NSC acting collectively. 

                                       -34-<PAGE>
                                        
                   IN WITNESS WHEREOF, CSX, NSC, the Management Investor
         and DOCP have caused this Agreement to be executed as of the
         date first written above by their respective officers thereunto
         duly authorized.

                                       CSX CORPORATION



                                       By   /s/ Mark G. Aron     
                                          Name:
                                          Title:


                                       NORFOLK SOUTHERN CORPORATION


                                       By   /s/ William J. Romig 
                                          Name:
                                          Title:


                                            /s/ Walter G. Rich   
                                          WALTER G. RICH


                                          DELAWARE OTSEGO CORPORATION


                                       By   /s/ Everett Gilmour   
                                          Name:
                                          Title:

                                        
                                       -35-<PAGE>
                                        

                                                                ANNEX I

                             CONDITIONS OF THE OFFER
                             -----------------------


                   Notwithstanding any other provision of the Offer, and
         in addition to and not in limitation of Buyer's rights to
         extend or amend the Offer at any time, in its sole discretion
         (subject to the Merger Agreement), Buyer shall not be required
         to accept for payment or, subject to any applicable rules or
         regulations of the SEC, pay for any DOCP Shares, and may delay
         the acceptance of payment of or, subject to any restriction
         referred to above, the payment for, and may terminate the
         Offer, if (a) the DOCP Shares tendered pursuant to the Offer by
         the expiration of the Offer and not withdrawn, together with
         the DOCP Shares owned by Buyer or any subsidiary of Buyer or to
         be contributed to Buyer pursuant to binding agreements (which
         Buyer, in its sole discretion, believes will be performed)
         represent, on a fully diluted basis less than 66 2/3% of the
         outstanding DOCP Shares (the "Minimum Condition"), (b) the
         waiting periods under the HSR Act applicable to the
         transactions contemplated by the Merger Agreement shall not
         have expired or been terminated, if such Act is applicable, or
         any other regulatory approvals required under applicable law
         for the consummation of the Offer shall not have been obtained;
         or (c) at any time prior to the acceptance for payment of DOCP
         Shares, any of the following conditions exist:

                   (i)  there shall be instituted, pending or threatened
              any action, investigation or proceeding by any domestic or
              foreign government or Governmental Entity, or there shall
              be instituted, pending or threatened any action or
              proceeding by any other person, domestic or foreign,
              before any domestic or foreign court or Governmental
              Entity (other than shareholder litigation by DOCP
              Shareholders acting in their capacity as DOCP shareholders
              and other than actions or proceedings by any person before
              a Government Entity to the extent such person seeks the
              imposition of conditions in proceedings pending as of the
              date hereof), (A) challenging or seeking to make illegal,
              to delay materially or otherwise, directly or indirectly,
              to restrain or prohibit the making of the Offer, the
              acceptance for payment of or payment for some of or all
              the DOCP Shares by Buyer or the consummation of the
              Merger, seeking to obtain material damages or imposing any
              material adverse conditions in connection therewith or
              otherwise, directly or indirectly, relating to the
              transactions contemplated by the Offer or the Merger, (B)
              seeking to restrain, prohibit or delay the exercise of
              full rights of ownership or operation by Buyer or its
              affiliates of all or any portion of the business or assets
              of DOCP and the DOCP Subsidiaries, taken as a whole, or of
              Buyer or any of its affiliates, or to compel Buyer or any
              of its affiliates to dispose of or hold separate all or
              any material portion of the business or assets of DOCP and
              the DOCP subsidiaries, taken as a whole, or of Buyer or
              any of its affiliates, (C) seeking to impose or confirm
              limitations on the ability of Buyer or any of its
              affiliates effectively to exercise full rights of
              ownership of the DOCP Shares, including, without
              limitation, the right to vote any DOCP Shares acquired or
              owned by Buyer or any of its affiliates on all matters
              properly presented to DOCP's shareholders or (D) seeking
              to require divestiture by Buyer or any of its affiliates
              of any DOCP Shares; or

                  (ii)  there shall be any action taken, or any statute,
              rule, regulation, injunction, order or decree proposed,
              enacted, enforced, promulgated, issued or deemed applicable to,

                                       A-1<PAGE>
                                        
              or any consent or approval withheld with respect to the Offer,
              the acceptance for payment of or payment for any DOCP Shares 
              or the Merger, by any domestic or foreign court or government 
              or Governmental Entity that, in the reasonable
              judgment of Buyer, might, directly or indirectly, result
              in any of the consequences referred to in clauses (A)
              through (D) of paragraph (i) above; or

                 (iii)  DOCP shall have breached or failed to perform in
              any material respect any of its covenants or agreements
              under the Merger Agreement which breach or failure to
              perform shall not have been cured, or any of the
              representations and warranties of DOCP set forth in the
              Merger Agreement shall not be true in any material respect
              when made or at any time prior to consummation of the
              Offer as if made at and as of such time and shall continue
              to be untrue; 

                  (iv)  the Merger Agreement shall have been terminated
              in accordance with its terms or all conditions (other than
              the condition pertaining to DOCP shareholder approval) to
              the consummation of the Merger shall not have been
              satisfied; or

         which, in the reasonable judgment of Buyer in any such case,
         and regardless of the circumstances giving rise to any such
         condition, makes it inadvisable to proceed with such acceptance
         for payment or payment.

                   The foregoing conditions are for the sole benefit of
         Buyer and may be asserted by Buyer regardless of the
         circumstances giving rise to any such condition (including any
         action or omission by Buyer) or may be waived by Buyer in whole
         or in part at any time and from time to time in its reasonable
         discretion.  The failure by Buyer at any time to exercise any
         of the foregoing rights shall not be deemed a waiver of any
         such right; the waiver of any such right with respect to
         particular facts and other circumstances shall not be deemed a
         waiver with respect to any other facts and circumstances; and
         each such right shall be deemed an ongoing right that may be
         asserted at any time and from time to time.
                                        
                                       A-2



                                                  EXHIBIT 4
                                 

                                                  EXECUTION COPY

                                 
                                 August 17, 1997



              This agreement is entered into to set forth our
         understanding with respect to the acquisition (the
         "Acquisition") of Delaware Otsego Corporation (the "Company")
         pursuant to the Merger Agreement, dated as of the date hereof
         (the "Merger Agreement"), by and among the Company, Walter Rich
         ("Rich"), CSX Corporation ("CSX") and Norfolk Southern
         Corporation ("NSC").  We have agreed as follows:

              1.   In the event of a termination of the Merger
                   Agreement, Rich shall not participate in any
                   termination fee (as contemplated by Section 8.5(b) of
                   the Merger Agreement), other than with respect to any
                   arrangements which may exist respecting Expenses (as
                   defined in the Merger Agreement).

              2.   The terms of the Acquisition shall be as set forth in
                   the Merger Agreement, and CSX, NSC and Rich shall
                   establish LLC and Buyer (as contemplated by the
                   Merger Agreement) as promptly as practicable.

              3.   CSX, NSC and Rich shall hereafter negotiate in good
                   faith toward definitive documentation respecting
                   final arrangements on terms along the lines laid out
                   in the term sheet attached to their proposal letter
                   to the Company, dated as of August 8, 1997, as
                   modified by the Merger Agreement.<PAGE>

                                 


              IN WITNESS WHEREOF, the undersigned have caused this
         Agreement to be executed as of the date first written above by
         their respective officers thereunto duly authorized.


                                 
                                            CSX CORPORATION



                                            By: /s/ Mark G. Aron  


                                            NORFOLK SOUTHERN CORPORATION



                                            By: /s/ William J. Romig



                                              /s/ Walter Rich   
                                            WALTER RICH

                                 

                                        2




                                               EXHIBIT 5




         SUPREME COURT OF THE STATE OF 
         NEW YORK COUNTY OF NEW YORK            Index No. 97 114690 
         - - - - - -  - - - - - - - - - - - x   Date purchased  8/14/97
         RICHARD BERNABE,
                             Plaintiff,     :   Plaintiff(s) 
                                                designate(s) N.Y.
                   - against -              :
                                                County as the place
         WALTER G. RICH, C. DAVID SOULE,    :   of trial.
         NILES F. CURTIS, MALCOLM C.
         HUGHES, GORDON R. FULLER, RICHARD  :   The basis of the venue
         A. WHITE, DAVID B. COMMON, DR.         is place where cause of
         GERALD A. GROFF, ROBERT L.         :   action arose
         MARCALUS, EVERETT A. GILMOUR, 
         ALBERT B. AFTOORA, CHARLES S.          :   SUMMONS
         BRENNER, HARVEY POLLY, CSX CORP.,
         NORFOLK SOUTHERN CORP., and        :   Plaintiff(s) reside(s) 
         Delaware OTSEGO CORP.,                 at
                                            :
                                                County of
                             Defendant(s)   :
         - - - - - - - - -  -  -  - - - - - x



         To the above named Defendant(s)  (see attached)

                   You are hereby summoned to answer the complaint in
         this action and to serve a copy of your answer, or, if the
         complaint is not served with this summons, to serve a notice of
         appearance, on the Plaintiff's Attorney(s) within 20 days
         after the service of this summons, exclusive of the day of
         service (or within 30 days after the service is complete if
         this summons is not personally delivered to you within the
         State of New York); and in case of your failure to appear or
         answer, judgment will be taken against you by default for the
         relief demanded in the complaint.

                                       WOLF POPPER LLP
         Dated:  August 14, 1997       Attorney(s) for Plaintiff

                                       Office and Post Office Address
         Defendant's address:
                                       845 Third Avenue
                                       New York, New York  10022<PAGE>

                                  
                                 Defendant's List
                                 ----------------


         1.   Walter G. Rich
              c/o Delaware Otsego Corp.
              1 Railroad Avenue
              Cooperstown, NY  13326

         2.   C. David Soule
              c/o Delaware Otsego Corp.
              1 Railroad Avenue
              Cooperstown, NY  13326

         3.   Niles F. Curtis
              c/o Delaware Otsego Corp.
              1 Railroad Avenue
              Cooperstown, NY  13326

         4.   Malcolm C. Hughes
              c/o Delaware Otsego Corp.
              1 Railroad Avenue
              Cooperstown, NY  13326

         5.   Gordon R. Fuller
              c/o Delaware Otsego Corp.
              1 Railroad Avenue
              Cooperstown, NY  13326

         6.   Richard A. White
              c/o Delaware Otsego Corp.
              1 Railroad Avenue
              Cooperstown, NY  13326

         7.   David B. Common
              c/o Delaware Otsego Corp.
              1 Railroad Avenue
              Cooperstown, NY  13326

         8.   Dr. Gerald D. Groff
              c/o Delaware Otsego Corp.
              1 Railroad Avenue
              Cooperstown, NY  13326

         9.   Robert L. Marcalus
              c/o Delaware Otsego Corp.
              1 Railroad Avenue
              Cooperstown, NY  13326

         10.  Everett A. Gilmour
              c/o Delaware Otsego Corp.
              1 Railroad Avenue
              Cooperstown, NY  13326<PAGE>

                                  
         11.  Albert B. Aftoora
              c/o CSX Corp.
              901 East Cary Street
              Richmond, VA  23219

         12.  Charles S. Brenner
              c/o Delaware Otsego Corp.
              1 Railroad Avenue
              Cooperstown, NY  13326

         13.  Harvey Polly
              c/o Delaware Otsego Corp.
              1 Railroad Avenue
              Cooperstown, NY  13326

         14.  CSX Corp.
              901 East Cary Street
              Richmond, VA  23219

         15.  Norfolk Southern Corp.
              Three Commercial Place
              Norwalk, VA  23510

         16.  Delaware Otsego Corp.
              1 Railroad Avenue
              Cooperstown, NY  13326<PAGE>
                                  

         SUPREME COURT OF THE STATE OF NEW YORK
         COUNTY OF NEW YORK
         - - - - - -  - - - - - - - - - - - - - x
         RICHARD BERNABE,                       :

                             Plaintiff,         : Civil Action No. 97 114690

                   - against -                  : CLASS ACTION COMPLAINT

         WALTER G. RICH, C. DAVID SOULE,        : 
         NILES F. CURTIS, MALCOLM C.            
         HUGHES, GORDON R. FULLER, RICHARD A.   :
         WHITE, DAVID B. COMMON, DR. GERALD       
         D. GROFF, ROBERT L. MARCALUS,          : 
         EVERETT A. GILMOUR, ALBERT B.          
         AFTOORA, CHARLES S. BRENNER,           : 
         HARVEY POLLY, CSX CORP., NORFOLK
         SOUTHERN CORP., and Delaware           : 
         OTSEGO CORP.,                          
                                                :

                             Defendant(s)       :

         - - - - - - - - -  -  -  - - - - - - - x


                   Plaintiff, Richard Bernabe, individually and on

         behalf of all others similarly situated, alleges upon

         information and belief (except for those allegations which

         pertain to plaintiff, which allegations are based upon personal

         knowledge), as follows:

                   1.  This action arises out of an unlawful scheme and

         plan by a group, led by the Company's Chief Executive Officer,

         to acquire the remaining public shares of Delaware Otsego Corp.

         ("DOC" or the "Company") in a going-private transaction for

         grossly inadequate consideration and in breach of defendants'

         fiduciary and other duties.  Plaintiff alleges that he and the

         other public stockholders of DOC common stock are entitled to

         enjoin the proposed transaction, or alternatively, to recover

         damages in the event the transaction is consummated.<PAGE>
                                   

                                   THE PARTIES

                   2.  Plaintiff Richard Bernabe is and at all relevant

         times was the owner of DOC common stock.

                   3.  (a)  Defendant DOC is a corporation organized and

         existing under the laws of the State of New York with its

         principal executive offices located at 1 Railroad Avenue,

         Cooperstown, New York 13326.  DOC is a holding company that

         provides railroad transportation and shipping links for

         customers throughout major northeastern railroads.

         Specifically, DOC is the parent of the New York Susquehanna &

         Western Railway ("NYS&W"), which owns 300 miles of track

         including a direct route into the New York City area.

                        (b)  DOC has approximately 1.8 million common

         shares issued and outstanding.  Its common stock trades on the

         NASDAQ/National Market System.

                   4.  Defendant Walter G. Rich ("Rich") is Chief

         Executive Officer, President, and a director of the Company.

         Rich owns approximately 15% of the Company's common stock.

                   5.  Defendant Albert B. Aftoora is a director of the

         Company.  He is also Vice-President of CSX Transportation,

         Inc., a wholly-owned subsidiary of CSX Corp.

                   6.  Defendant C. David Soule is Executive Vice

         President and a director of the Company.

                   7.  Defendants Niles F. Curtis, Malcolm C. Hughes,

         Gordon R. Fuller, Richard A. White, Dr. Gerald D. Groff, Robert

                                      
                                       -2-<PAGE>
                                       
         L. Marcalus, Everett A. Gilmour, Charles S. Brenner, and Harvey

         Polly are directors of the Company.

                   8.  Defendant CSX Corp. ("CSX") is a Virginia

         corporation with its principal executive offices located at 901

         East Cary Street, Richmond, Virginia 23219.  CSX is an

         international transportation company with interests in rail,

         ocean container shipping, bargings, trucking, warehousing and

         distribution.  CSX owns approximately 6% of DOC's common stock.

                   9.  Defendant Norfolk Southern Corp. ("Norfolk

         Southern") is a Virginia corporation with its principal

         executive offices located at Three Commercial Place, Norfolk,

         Virginia 23510.  Norfolk Southern is a holding company which

         owns Norfolk Southern Railway Company.

                   10.  Defendants CSX and Norfolk Southern recently

         agreed with Consolidated Rail Corp. ("Conrail") to acquire

         Conrail's routes, including access into the New York City area.

         DOC is the only other rail carrier with a direct route into the

         New York City area.

                   11.  The above-named individual defendants

         (collectively the "Individual Defendants") as officers and/or

         directors of the Company, and/or significant shareholders of

         the Company owe fiduciary duties of good faith, loyalty, fair

         dealing, due care, and candor to plaintiff and the other

         members of the Class (as defined below).

                   12.  Defendants Rich and CSX, through their

         stockholdings and executive/directorial positions, control

         DOC's
                                       
                                       -3-<PAGE>
                                       
         Board of Directors, who have been nominated for the positions

         and serve with the approval of Rich and CSX.

                              JURISDICTION AND VENUE

                   13.  This Court has jurisdiction over this action and

         the defendants.  Defendants, through themselves or their

         agents, inter alia, (a) transact business in the State of New

         York; (b) committed a tortious act within the State of New

         York; and/or (c) committed a tortious act without the State of

         New York causing injury to Class members (as defined infra)

         within the State of New York.

                   14.  Pursuant to CPLR 503, venue is proper in this

         judicial district since many of the Class members reside in New

         York County and will suffer injury in this County if the

         proposed transaction is consummated.  Since the cause of action

         arises, in substantial part, in New York County, under CPLR

         503, DOC is deemed to be a resident of New York County.

                             CLASS ACTION ALLEGATIONS

                   15.  Plaintiff brings this action pursuant to CPLR

         901, on behalf of himself and all other stockholders of the

         Company (the "Class").  Excluded from the Class are the

         defendants herein, members of their immediate families, and any

         subsidiary, firm, trust, corporation, or other entity related

         to or affiliated with any of the defendants and their

         successors in interest, who are or will be threatened with

         injury arising from defendants' actions.

                                       
                                       -4-<PAGE>
                                       

                   16.  This action is properly maintainable as a class

         action for the following reasons:

                        (a)  the Class is so numerous that joinder of

         all members is impracticable.  While the exact number of class

         members is unknown to plaintiff at this time and can only be

         ascertained through appropriate discovery, there are

         approximately 1.8 million shares of DOC common stock

         outstanding held by hundreds of shareholders of record.  The

         holders of these shares are believed to be geographically

         dispersed throughout the United States;

                        (b)  there are questions of law and fact which

         are common to members of the Class and which predominate over

         any questions affecting only individual members.  The common

         questions include, inter alia, the following:

                             (i)  whether defendants have engaged and

         are continuing to engage in a plan and scheme to benefit

         themselves at the expense of the members of the Class;

                             (ii)  whether the defendants, as directors

         and/or officers of the Company and/or as significant

         shareholders of the Company, have breached their fiduciary

         duties owed to plaintiff and the other members of the Class,

         including their duties of entire fairness, loyalty, due care,

         and candor;

                             (iii)  whether defendants have disclosed

         all material facts in connection with the challenged

         transaction; and
                                       
                                       -5-<PAGE>
                                       

                             (iv)  whether plaintiff and the other

         members of the Class would be irreparably damaged were

         defendants not enjoined from the conduct described herein;

                        (c)  the claims of plaintiff are typical of the

         claims of the other members of the Class in that all members of

         the Class will be damaged by defendants' actions; 

                        (d)  plaintiff will fairly and adequately

         protect the interests of the members of the Class, and is

         committed in prosecuting this action.  Plaintiff has retained

         counsel competent and experienced in litigation of this nature;

                        (e)  the prosecution of separate actions by

         individual members of the Class would create the risk of (i)

         inconsistent or varying adjudications with respect to

         individual members of the Class which would establish

         incompatible standards of conduct for defendants; or (ii)

         adjudications with respect to individual members of the Class

         which would as a practical matter be dispositive of the

         interests of the other members not parties to the adjudications

         or substantially impair or impede their ability to protect

         their interests; and

                        (f)  defendants have acted, or refused to act,

         on grounds generally applicable to, and causing injury to, the

         Class and, therefore, preliminary and final injunctive relief

         on behalf of the Class as a whole is appropriate.
                                        
                                       -6-<PAGE>
                                        

                             SUBSTANTIVE ALLEGATIONS

                   17.  The recent proposed acquisition of Conrail's

         routes by CSX and Norfolk Southern has made the NYS&W an

         attractive acquisition candidate.  Both Norfolk Southern and

         CSX were interested in obtaining the NYS&W since it would

         secure the only remaining direct rail route to New York City.

         Canadian carriers were also interested in the NYS&W since the

         Conrail acquisition could sharply reduce their ability to use

         Conrail's former routes.

                   18.  DOC's stock price has sharply increased since

         the announcement of the proposed Conrail acquisition by CSX and

         Norfolk Southern, reflecting investor awareness of the

         potential takeover value of DOC.  As recently as August 1,

         1997, the market price of DOC was $24 per share.

                   19.  On August 11, 1997, DOC announced that a group,

         comprised of CSX, Norfolk Southern, and Rich (the Company's

         Chief Executive Officer and President), offered to acquire the

         remaining 79% of the outstanding shares of DOC that it did not

         already own.  Pursuant to the proposed transaction, each of

         DOC's common shares will be converted into the right to receive

         $19.00 in cash (the "Buyout Transaction"), a price

         substantially less than its market price.

                   20.  As part of the Buyout Transaction, the group

         will form a new company "Newco" to be organized and owned by

         Rich, CSX, and Norfolk Southern, with Rich owning 80% and CSX

         and Norfolk Southern each owning 10% of the voting equity,

                                       
                                       -7-<PAGE>
                                       
         respectively.  Ninety five percent of the costs of the Buyout

         Transaction will be paid by CSX and Norfolk Southern:  CSX will

         contribute $23.4 million in cash, plus $2.1 million in DOC

         stock owned by CSX; Norfolk Southern will contribute $25.5

         million in cash; and Rich will contribute $2.6 million in cash.

         The Board of Directors of Newco will consist of Rich and his

         designees (who will represent a majority) as well as

         representatives of CSX and Norfolk Southern.  Certain

         designated matters to be agreed upon will require the approval

         of a supermajority of Newco's Board of Directors.

                   21.  The purpose of the Buyout Transaction is to

         enable the group to acquire one hundred (100%) percent equity

         ownership of DOC and its valuable assets for its own benefit at

         the expense of DOC's public stockholders, who will be deprived

         of their equity investment and the benefits thereof including,

         among other things, the expected growth in the Company's

         profitability.  

                   22.  The Buyout Transaction is the product of unfair

         dealing, and the price of $19.00 cash per share to be paid to

         class members is unconscionable and unfair and so grossly

         inadequate as to constitute a gross breach of trust against the

         public stockholders because, among other things:

                        (a)  the announcement of the proposed Buyout

         Transaction was made when the Company was poised for

         significant future growth and earnings.  Indeed, the Company

         recently announced, on August 12, 1997, its operating results

         for the second quarter ended June 30, 1997.  The Company

         reported an 
                                       
                                       -8-<PAGE>
                                       
         increase in revenues, net earnings, and cash position over the

         same period a year ago, and is poised for growth;

                        (b)  because of Rich's senior management

         positions with the Company, his and CSX's Board membership,

         along with the group's combined 21% ownership of the Company's

         stock, no third party will likely bid for DOC.  Thus, the

         group, led by Rich, will be able to proceed with the Buyout

         Transaction without an auction or other type of market check to

         maximize value for DOC's public shareholders; and

                        (c)  the group timed the announcement of the

         Buyout Transaction to place an artificial lid or cap on the

         market price for DOC's stock to enable itself to acquire the

         stock at the lowest possible price.  The Buyout Price of $19.00

         per share represents a substantial discount from the market

         price on the day prior to the announcement of the Buyout

         Transactions ($23.00).  It is also well below the price that

         the stock reached approximately two weeks ago ($24).  Further,

         the Buyout Price of $19.00 per share is only marginally higher

         than the book value per share of the Company ($18.78).  The

         Buyout Price is also substantially below its fair value based

         on a comparison of comparable railroads' trading multiples and

         acquisition multiples.

                   23.  By reason of defendants' positions with DOC,

         along with their ownership of the Company, defendants are in

         possession of non-public information concerning the financial

         condition and prospects of DOC, and especially the true value

         and expected
                                       
                                       -9-<PAGE>
                                       
         increased future value of DOC and its assets, which have not

         been disclosed to DOC's public stockholders.

                   24.  The group, led by Rich, is intent on paying the

         lowest buyout price to Class members, whereas it and the other

         defendants are duty-bound to maximize shareholder value.  The

         defendants have failed to insure that shareholder value would

         be maximized and are acting to better the interests of the

         group at the expense of the DOC public shareholders.

                   25.  The proposed Buyout Transaction is wrongful,

         unfair and harmful to DOC's public stockholders, and represents

         an effort by the group to aggrandize their own financial

         positions and interest at the expense of and to the detriment

         of the Class.  The Buyout Transaction is an attempt to deny

         plaintiff and the other members of the Class their right to

         share proportionately in the true value of DOC's valuable

         assets, future growth in profits, and earnings, while usurping

         the same for the benefit of the group on unfair and inadequate

         terms.

                   26.  The Individual Defendants, in failing to

         disclose the material non-public information in their

         possession as to the value of DOC's assets, the full extent of

         the future earnings potential of DOC and its expected increase

         in profitability, are not acting in good faith toward plaintiff

         and the other members of the Class, and have breached and are

         breaching their fiduciary duties to the members of the Class.

                   27.  Defendant Rich has breached his fiduciary duties

         of loyalty and due care by proposing and/or agreeing to the

                                       
                                       -10-<PAGE>
                                       
         Buyout Transaction for his own personal benefit and at the

         expense, and to the detriment of, DOC's public shareholders.

         Defendants CSX and Norfolk Southern have aided and abetted

         defendant Rich, and conspired with Rich, to obtain 100%

         ownership of DOC's public stock for the benefit of the group.

         CSX and Norfolk Southern have, and will benefit from, the

         Buyout Transaction since it will deprive any other rail carrier

         from buying control of DOC, thereby obtaining direct access to

         the New York City area.

                   28.  As a result of defendants' unlawful actions,

         plaintiff and the other members of the Class will not receive

         their fair portion of the value of DOC's assets and business

         and will be prevented from obtaining the real value of their

         equity ownership of the Company.  Unless the proposed Buyout

         Transaction is enjoined by the Court, defendants will continue

         to breach their fiduciary duties owed to the plaintiff and the

         members of the Class, and the investor group, led by Rich, will

         succeed in its plan described above, all to the irreparable

         harm of the members of the Class.

                   29.  Plaintiff and the other members of the Class

         have no adequate remedy at law.

                   WHEREFORE, plaintiff demands judgment as follows:

                   (a)  declaring this action to be a proper class

         action and certifying plaintiff as the representative of the

         Class;

                                       
                                       -11-<PAGE>
                                       
                   (b)  ordering defendants to carry out their fiduciary

         duties to plaintiff and the other members of the Class,

         including those duties of care, loyalty, and candor;

                   (c)  granting preliminary and permanent injunctive

         relief against the consummation of the Buyout Transaction as

         described herein;

                   (d)  in the event the Buyout Transaction is

         consummated, rescinding the Buyout Transaction effected by

         defendants and awarding rescissory damages to the Class;

                   (e)  awarding plaintiff the costs and disbursements

         of the action including allowances for plaintiff's reasonable

         attorneys and experts' fees; and 

                   (f)  granting such other and further relief as the

         Court may deem just and proper.



         Dated:  August 14, 1997



                                       WOLF POPPER LLP

                                       845 Third Avenue
                                       New York, New York 10022
                                       (212) 759-4600


                                       Attorneys for Plaintiff

                                       
                                       -12-



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