Mississippi Code Title 87. Contracts and Contractual Relations § 87-3-3

Conveyances of land, or contracts relating thereto, executed by an attorney in fact for his principal, and duly acknowledged or proved, shall have the same force and effect as if executed and acknowledged by the principal; and where a conveyance by an attorney is in execution of letters of attorney, so acknowledged or proved and recorded, it shall pass the interest of the principal though not formally executed in his name.