In Mobbs v. City of Lehigh, 1982 OK 149, 655 P.2d 547, the plaintiff filed a quiet title action against the City over a 10-acre tract she had inherited from her father. After determining that a void tax deed could be a valid root of title under the Act, the Mobbs Court concluded the 1940 tax deed, although void, was the plaintiff's root of title in her chain of record title. Under the facts of Mobbs, the tax deed was clearly the most recent to be recorded as of a date thirty years prior to the filing of her 1971 quiet title action. The Mobbs Court, in footnote 32, referred to the "30-year period in suit (1940-1970)" when explaining that "if the City had been in continuous possession" for that period, "its continuous possession would serve as a valid notice under the Act and preserve the City's interest. 16 O.S. 1981 74(b)."