EXHIBIT 5.1 OPINION OF GENERAL COUNSEL OF THE REGISTRANT Farmer Mac Federal Agricultural Mortgage Corporation 919 18th Street, N.W., Suite 200 Washington, D.C. 20006 June 19, 1996 Farmer Mac Mortgage Securities Corporation 919 18th Street, N.W., Suite 200 Washington, D.C. 20006 Re: Form S-3 Registration Statement; File No. 33- Ladies and Gentleman: I am the Vice President and General Counsel of the Federal Agricultural Mortgage Corporation, a federally chartered instrumentality of the United States ("Farmer Mac"), and, in that capacity, I have acted as counsel to Farmer Mac Mortgage Securities Corporation ("FMMSC"), a wholly owned subsidiary of Farmer Mac, in connection with the preparation and filing with the Securities and Exchange Commission of a registration statement on Form S-3 (the "Registration Statement") relating to the registration under the Securities Act of 1933 (the "1933 Act") of Guaranteed Agricultural Mortgage-Backed Securities (the "Securities"). The Securities are to be issued from time to time in series pursuant to a trust agreement to be dated as of June 1, 1996 (the "Trust Agreement") and entered into between Farmer Mac, FMMSC and First Trust National Association, as Trustee, as supplemented by an issue supplement thereto each time a series of Securities is issued (each, an "Issue Supplement"). In arriving at the opinions expressed below, I have made such legal and factual examinations and inquires, and have examined and relied upon the forms of prospectus and prospectus supplement (collectively, the "Prospectus") contained in the Registration Statement and originals or copies, certified or otherwise identified to my satisfaction, of such other certificates, corporate records, agreements and other instruments and documents, as I have deemed advisable or necessary for the purpose of rendering this opinion. In rendering the opinions expressed below, I have assumed and have not verified that the signatures on all documents that I have examined are genuine, that all copies of documents that I have examined conform to the originals thereof and that the originals thereof are authentic. Based upon the foregoing, it is my opinion that: Farmer Mac Mortgage Securities Corporation June 19, 1996 Page 2 of 2 1. When the Trust Agreement has been duly authorized by all necessary action and duly executed and delivered by Farmer Mac, FMMSC and the Trustee, the Trust Agreement will constitute a legal, valid and binding obligation of Farmer Mac and FMMSC, the enforcement of which will be subject to general principles of equity regardless of whether enforcement is sought in a proceeding in equity or at law. 2. When an Issue Supplement has been duly authorized by all necessary action and duly executed and delivered by Farmer Mac, FMMSC and the Trustee, and when the Securities of the related series have been duly executed, countersigned, issued and sold as contemplated in the Registration Statement, such Securities will be legally and validly issued, fully paid and nonassessable, and the holders of such Securities will be entitled to the benefits of the Trust Agreement and the Issue Supplement. 3. Pursuant to the Farmer Mac Guarantee, which is set forth in Article V of the Trust Agreement, Farmer Mac will guarantee payments on the Securities as and to the extent described in the Prospectus under "FARMER MAC GUARANTEE". The obligation of Farmer Mac under the Farmer Mac Guarantee will not carry the full faith and credit of the United States. I express no opinion other than as to the laws of the United States of America and the laws of the State of New York. I hereby consent to the filing of this opinion as an exhibit to the Registration Statement. Very truly yours, Michael T. Bennett Vice President and General Counsel MTB/als