Minn. Stat. § 507.35
When any instrument, otherwise legal, affecting the title to real estate situate in this state, granting any interest therein to or evidencing any lien thereon in favor of any person, as trustee, shall be recorded in the office of the county recorder, or filed in the office of the registrar of titles, of the county in which such real estate is situate, and the powers of such trustee and the beneficiary of such trust are not set forth in the instrument expressly or by reference to an instrument so recorded or filed such designation of such grantee, as trustee, may be disregarded and shall not be deemed to give notice to any person of the rights of any beneficiary under such trust in the real estate unless and until an instrument defining or conferring such powers of such trustee and designating the beneficiary thereunder, with a certificate attached executed by the trustee in the same manner as deeds are required to be executed by the laws of this state describing such instrument so granting an interest or evidencing a lien and stating that the same is held subject to the provisions of such trust, shall be so recorded or filed after such recording or filing of such instrument granting the interest in or evidencing such lien on the real estate.
Minn. Stat. § 507.35
(8226-1) 1929 c 318 s 1; 1976 c 181 s 2