Smithsonian National Postal Museum:
1p Stamp Act of 1765 proof.
Smithsonian National Postal Museum:
July 4, 1776, John Hancock cover. Loan from George Jay Kramer. For press use only.
Smithsonian National Postal Museum:
5c Franklin original model, 1847.
Smithsonian National Postal Museum:
10c Washington original model, 1847.
Smithsonian National Postal Museum:
10c Washington pair on second-day-of-use cover, 1847. Loan from William H. Gross. For press use only.
Smithsonian National Postal Museum:
10c Washington on Pony Express cover, 1860. Loan from William H. Gross. For press use only.
Smithsonian National Postal Museum:
2c Hawaiian Missionary single, 1851.
Smithsonian National Postal Museum:
5c Hawaiian Missionary single, 1851.
Smithsonian National Postal Museum:
13c H.I. Hawaiian Missionary single, 1852.
Smithsonian National Postal Museum:
13c Hawaiian Missionary single, 1851.
Smithsonian National Postal Museum:
13c Hawaiian Missionary strip of three on cover, 1851. Made possible by Thurston Twigg-Smith. For press use only.
Smithsonian National Postal Museum:
Apollo 15 Lunar Mail cover, 1971. Postmaster General’s Collection. Loan from USPS. For press use only.
Smithsonian National Postal Museum:
24c Curtiss Jenny inverted block of four, 1918. Loan from William H. Gross. For press use only.