Two satin-finish 10 x 8 photos of aerospace stamp designers Paul Calle and Robert McCall holding up their famous Apollo-inspired designs, individually signed in black felt tip, "Paul Calle, First Man on the Moon, Stamp Artist, 1969" and "Robert T. McCall." Included are stamp blocks of the pictured Calle and McCall designs: a 32-stamp block of Calle's 10-cent 'First Man on the Moon' stamps, and a 50-stamp block of McCall's 8-cent 'United States in Space, A Decade of Achievement' stamps. In overall fine condition.