O.C.G.A. § 44-2-29 (2019)

prior to statutory authorization; effect of incorporation by reference of plat prior to authorization. Any plats or any blueprints, tracings, photostatic copies, or other copies of plats recorded prior to March 29, 1937, in the manner described in Code Section 44-2-26 are declared to have been duly recorded; and the reference in any deed, mortgage, or other instrument executed prior to March 29, 1937, to the boundaries, metes, courses, or distances of the real estate delineated or shown on any plat or on any blueprint, tracing, photostatic copy, or other copy of a plat recorded prior to March 29, 1937, in the manner described in Code Section 44-2-26 shall have the same effect as if the boundaries, metes, courses, or distances of the real estate were specifically set forth in the deed, mortgage, or other instrument.