Covers tagged "pioneer" (clear filter)

Theodore von Karman Aerospace Scientist 29¢ Stamp
Theodore von Karman Aerospace Scientist 29¢ Stamp
1993 Cherokee Strip Centennial - Opening Ceremonies
1993 Cherokee Strip Centennial - Opening Ceremonies
Kansas City, Missouri Centennial 1850-1950
Kansas City, Missouri Centennial 1850-1950
15th Annual Coin and Stamp Show, Enid OK 1992
15th Annual Coin and Stamp Show, Enid OK 1992
Winnipeg Centennial 1874-1974 Stamp Exhibition
Winnipeg Centennial 1874-1974 Stamp Exhibition
1990 Idaho Statehood Centennial Mountain Bluebird Block
1990 Idaho Statehood Centennial Mountain Bluebird Block
Washington Territory Centennial, March 2, 1953
Washington Territory Centennial, March 2, 1953