Three ASTP commemorative covers: two launch day covers with different stamped cachets, each fully signed by the American

Deke Slayton (1924-1993) Astronaut. Slayton was one of the original Mercury 7 astronauts, but he never flew in that program.

Early hand-drawn technical diagram by Deke Slayton on an off-white 17 x 11 sheet, titled and signed along the bottom in

Early hand-drawn technical diagram by Deke Slayton on an off-white 17.25 x 12 fabric sheet, titled and signed along the

TLS signed “DK Slayton,” one page, 8 x 10.5, NASA letterhead, June 26, 1972. Letter forwarding an autographed cover and

Handsome official color semi-glossy 7 x 9.5 NASA photo of Deke Slayton posing in his white space suit for the Apollo-Soyuz

Souvenir typescript signed “D. K. Slayton,” eight pages, 8.5 x 11, consisting of an excerpt from “A Standing Start,” a

Color satin-finish 11 x 13 photo of the original seven Mercury astronauts in their silver suits, signed in blue and black

Official color 10 x 8 NASA lithograph of the American crew of the Apollo–Soyuz Test Project posing together in their white

Block of two 10-cent stamps honoring the Apollo–Soyuz Test Project, 3.5 x 2.5, signed in black ink by the full American

The Mercury Astronauts, Alan Shepard and Deke Slayton, Buzz Aldrin, James Lovell, Walter M Schirra Jr, Frank Borman. Leather

Official glossy 10.25 x 8 NASA photo of the American and Soviet crews of the historic and Space Race-ending Apollo-Soyuz