(Ohio) "Cleaveland Ohio 13th. March", manuscript postmark and matching "25" rating for over 500 miles on datelined 1806 folded letter to Norwich Conn., Very Fine and choice, ex-Thomas Allen. Estimate  $600 - 800. THE SECOND EARLIEST CLEVELAND COVER RECORDED OUTSIDE OF ARCHIVES. The Cleveland Post Office was established October 1804. Mail from Pittsburgh, Pa. via Youngstown, Canfield, and Warren, Ohio and after October 1804 to Detroit, Mich. Population of Cleveland in 1810 was only 57 people. $0 (Image)