Greeley C.T., June 6, manuscript postmark on 1870 cover to Washington, Pa., franked with manuscript cancelled 1869 3¢ ultramarine, Very Fine, an early use from this recently opened office. Estimate  $300 - 400. The Greeley Post Office was started on April 21, 1870, to serve the postal needs of the new town settled by the New York organized Union Colony. It took its name quite naturally from its sponsor, Horace Greeley, famous editor and owner of the New York Tribune. $0 (Image)