Covers tagged "universal postal congress" (clear filter)

20th Universal Postal Congress & World Stamp Expo 1989
20th Universal Postal Congress & World Stamp Expo 1989
20th Universal Postal Congress Steamboat Cover with RKA Cachet
20th Universal Postal Congress Steamboat Cover with RKA Cac…
Fort Atkinson Iowa Sesquicentennial 1840-1990 — Cedar Valley Stamp Club
Fort Atkinson Iowa Sesquicentennial 1840-1990 — Cedar Valle…