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

                                   FORM 12b-25

                           NOTIFICATION OF LATE FILING


 (Check One):[]Form 10-K [ ]Form 20-F [ ]Form 11-K [X ]Form 10-Q [ ]Form N-SAR

                  For Period Ending: June 30, 1996 [ ] Transition Report on Form
                  10-K [ ] Transition  Report on Form 20-F [ ] Transition Report
                  on Form 11-K [ ] Transition Report on Form 10-Q [ ] Transition
                  Report  on  Form  N-SAR  For  the  Transition   Period  Ended:
                  __________

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  Read Attached Instruction Sheet Before Preparing Form. Please Print or Type.

     Nothing in this form shall be  construed to imply that the  Commission  has
verified any information contained herein.
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     If the  notification  relates  to a portion of the  filing  checked  above,
identify the Item(s) to which the notification relates:

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PART I - REGISTRANT INFORMATION

                             Greenbriar Corporation
                             ----------------------
                             Full Name of Registrant

                 formerly Medical Resource Companies of America
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                            Former Name if Applicable

                               4265 Kellway Circle
                               -------------------
            Address of Principal Executive Office (Street and Number)

                                Addison, TX 75244
                                -----------------
                            City, State and Zip Code


PART II - RULES 12b-25(b) AND (c)

If the subject report could not be filed without  unreasonable effort or expense
and the registrant seeks relief pursuant to Rule 12b-25(b), the following should
be completed. (Check box if applicable)

     (a)  The reasons  described in  reasonable  detail in Part III of this form
          could not be eliminated without unreasonable effort or expense;

[X]       (b) The subject annual report,  semi-annual report,  transition report
          on Form 10-K, Form 20-F,  Form 11-K,  Form N-SAR, or portion  thereof,
          will be filed on or before the  fifteenth  calendar day  following the
          prescribed  due date;  or the subject  quarterly  report of transition
          report on Form 10-Q, or portion thereof will be filed on or before the
          fifth calendar day following the prescribed due date; an

     (c)  The accountant's statement or other exhibit required by Rule 12b-25(c)
          has been attached if applicable.

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PART III - NARRATIVE

State below in  reasonable  detail the reasons  why the Form 10-K,  11-K,  10-Q,
N-SAR, or the transition  report or portion  thereof,  could not be filed within
the prescribed time period. (Attach Extra Sheets If Needed)

     See Attached


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PART IV - OTHER INFORMATION

(1)  Name and telephone number of person to contact in regard
     to this notification.

                   Gene Bertcher   (214)          407-8400
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                   (Name)   (Area Code) ( Telephone Number)

(2)  Have all other periodic  reports  required under Section 13 or 15(d) of the
     Securities Exchange Act of 1934 or Section 30 of the Investment Company Act
     of 1940 during this  preceding 12 months (or for such  shorter  period that
     the registrant was required to file such reports) been filed?  If answer is
     no, identify reports(s). [X] Yes [ ] No

(3)  Is it anticipated that any significant change in results of operations from
     the corresponding  period for the last fiscal year will be reflected by the
     earnings  statements  to be  included  in the  subject  report  or  portion
     thereof? [ ] Yes [X] No

     If so, attach an explanation of the anticipated  change,  both  narratively
     and quantitatively, and, if appropriate, state the reasons why a reasonable
     estimate of the results cannot be made.



     Greenbriar Corporation (formerly Medical Resource Companies of America)
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                  (Name of Registrant as Specified in Charter)

has  caused  this  notification  to be signed on its  behalf by the  undersigned
thereunto duly authorized.

Date: August  14, 1996   By: /s/ Gene S. Bertcher
                               Executive Vice President/Chief Financial Officer

INSTRUCTION: The form may be signed by an executive officer of the registrant or
by any other duly  authorized  representative.  The name and title of the person
signing  the form  shall  be typed or  printed  beneath  the  signature.  If the
statement is signed on behalf of the registrant by an authorized  representative
(other than an executive officer), evidence of the representative's authority to
sign on behalf of the registrant shall be filed with the form.


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                                    ATTENTION

Intentional  misstatements  or omissions  of fact  constitute  Federal  Criminal
Violations (See 18 U.S.C. 1001).

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                              GENERAL INSTRUCTIONS

1.   This form is  required by Rule  12b-25 (17 CFR  240.12b-25)  of the General
     Rules and Regulations under the Securities Exchange Act of 1934.

2.   One signed  original and four conformed  copies of this form and amendments
     thereto  must be  completed  and filed  with the  Securities  and  Exchange
     Commission,  Washington,  D.C.  20549,  in accordance  with Rule 0-3 of the
     General Rules and Regulations  under the Act. The information  contained in
     or filed  with  the form  will be made a matter  of  public  record  in the
     Commission files.

3.   A manually  signed copy of the form and  amendments  thereto shall be filed
     with each national  securities exchange on which any class of securities of
     the registrant is registered.

4.   Amendments to the notifications  must also be filed on Form 12b-25 but need
     not restate information that has been correctly  furnished.  The form shall
     be clearly identified as an amended notification.






Attachment No. 1



During March,  1996  Greenbriar  Corporation  merged with another  company.  The
pro-forma  information necessary to record and disclose this transaction for the
second quarter is in the process of being completed.