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                                                                    Exhibit 5.1

                [LETTERHEAD OF BALLARD SPAHR ANDREWS & INGERSOLL]


                                  June 14, 1996

Greenberg, Traurig, Hoffman,
  Lipoff, Rosen & Quentel
Attn: Judith D. Fryer, Esq.
153 East 53rd Street
New York, New York 10022

                  Re:      Registration Statement on Form S-11
                           (Registration No. 0-28378):
                           2,853,658.5365 Shares of Common
                           Stock, $.01 Par Value Per Share

Ladies and Gentlemen:

                  We have served as Maryland counsel to American Asset Advisors
Trust, Inc., a Maryland corporation (the "Company"), in connection with certain
matters of Maryland law arising out of the registration of up to 2,853,658.5365
shares (the "Shares") of Common Stock, $.01 par value per share (the "Common
Stock"), by the Company, pursuant to the above-referenced Registration
Statement, and all amendments thereto (the "Registration Statement"), under the
Securities Act of 1933, as amended (the "1933 Act"). Unless otherwise defined
herein, capitalized terms used herein shall have the meanings given to them in
the Registration Statement.

                  In connection with our representation of the Company, and as a
basis for the opinion hereinafter set forth, we have examined originals, or
copies certified or otherwise identified to our satisfaction, of the following
documents (hereinafter collectively referred to as the "Documents"):

                  1.       The charter of the Company, certified as of a recent
date by the State Department of Assessments and Taxation of
Maryland (the "SDAT");

                  2.       The Amended and Restated Bylaws of the Company,
certified as of a recent date by its Executive Vice President;

                  3.       Resolutions adopted by the Board of Directors of the
Company relating to the sale and issuance of the Shares, certified
as of a recent date by the Executve Vice President of the Company;
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                  4.       A certificate as of a recent date of the SDAT as to
the good standing of the Company;

                  5.       The form of certificate representing a share of the
Common Stock;

   
                  6.       A certificate executed by Phil P. Moss, Executive
Vice President of the Company, dated June 14, 1996; and
    

                  7.       Such other documents and matters as we have deemed
necessary or appropriate to express the opinion set forth herein, subject to the
assumptions, limitations and qualifications stated herein.

                  In expressing the opinion set forth below, we have assumed,
and so far as is known to us there are no facts inconsistent with, the
following:

                  1.       Each of the parties (other than the Company) 
executing any of the Documents has duly and validly executed and delivered each
of the Documents to which such party is a signatory, and such party's
obligations set forth therein are legal, valid and binding and are enforceable
in accordance with all stated terms except as limited (a) by bankruptcy,
insolvency, reorganization, moratorium, fraudulent conveyance or other laws
relating to or affecting the enforcement of creditors' rights or (b) by general
equitable principles;

                  2.       Each individual executing any of the Documents on
behalf of a party (other than the Company) is duly authorized to do
so;

                  3.       Each individual executing any of the Documents is
legally competent to do so; and

                  4.       All Documents submitted to us as originals are 
authentic. All Documents submitted to us as certified or photostatic copies
conform to the original documents. All signatures on all Documents are genuine.
All public records reviewed or relied upon by us or on our behalf are true and
complete. All statements and information contained in the Documents are true and
complete. There are no oral or written modifications of or amendments to the
Documents, and there has been no waiver of any of the provisions of no waiver of
any of the provisions of the Documents, by action or conduct of the parties.

                  The phrase "known to us" is limited to the actual knowledge,
without independent inquiry, of the lawyers at our firm who have performed legal
services in connection with the issuance of this opinion.

                  Based upon the foregoing, and subject to the assumptions,
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limitations and qualifications stated herein, it is our opinion that:

                  1.       The Company is a corporation duly incorporated and
existing under and by virtue of the laws of the State of Maryland
and is in good standing with the SDAT.

                  2.       The Shares have been duly authorized and, when sold 
and delivered against payment therefor in the manner described in such
authorization, will be validly issued, fully paid and nonassessable.

                  The foregoing opinion is limited to the substantive laws of
the State of Maryland and we do not express any opinion herein concerning any
other law.

                  This opinion is being furnished to you solely for your
benefit. Accordingly, it may not be relied upon by, quoted in any manner to, or
delivered to any other person or entity without, in each instance, our prior
written consent.

                  We hereby consent to the filing of this opinion as an exhibit
to the Registration Statement and to the use of the name of our firm therein. In
giving this consent, we do not admit that we are within the category of persons
whose consent is required by Section 7 of the 1933 Act.

                                          Very truly yours,


                                          /s/ Ballard Spahr Andrews & Ingersoll
                                          -------------------------------------
                                              Ballard Spahr Andrews & Ingersoll