Stamps First Day Issue - American Architecture Series (#1838-1841) Complete Set of 5. Set shows important American buildings dating from the 19th century including the Smithsonian Institution, the Trinity Church, the Pennsylvania Academy of Fine Arts and the Lyndhurst with descriptive information on each building on the back side of each envelope.

These are Fleetwood First Day Issues. They began producing First Day Covers in 1941 and their designs are full-color works of art. Most Fleetwood First Day Covers feature interesting information about the stamp subject and are produced for both commemorative and regular issue U.S. stamps of all denominations. These covers are unaddressed.

Postmarked October 9, 1980 in New York, NY.