Stamp block and first day covers signed by the stamp designer, Paul Calle.
Stamp block signed by Paul Calle.
Edward White, the first American to conduct a spacewalk during the Gemini 4 mission on 3 June 1965. On a 5c Space Twins FD card with his signature at right. - Ira & Larry Goldberg Coins & Collectibles
FDC with hand-drawn sketch by Paul Calle.
First day cover signed by Paul Calle.