1975-07-15 USA Apollo-Soyuz Test Project

A launch cover from the Apollo-Soyuz mission, postmarked at Kennedy Space Center on July 15, 1975. It features the signatures of the Soyuz crew, Alexei Leonov and Valeri Kubasov, as well as the Apollo crew, Thomas Stafford, Vance Brand, and Deke Slayton.
A First Day Cover featuring the US Apollo-Soyuz stamps that were issued on July 15, 1975. The cover is signed by the Soyuz crew members, Alexei Leonov and Valeri Kubasov, along with the Apollo crew, which includes Thomas Stafford, Vance Brand, and Deke Slayton.
Apollo-Soyuz link-up covers that feature postmarks from Houston dated July 17, 1975.
A cover depicting the undocking of the Apollo-Soyuz spacecrafts on July 19, 1975.
Photo: The Apollo spacecraft splashdown in the Pacific Ocean and being lifted aboard the USS New Orleans recovery ship on July 25, 1975.
A cover from the USS New Orleans recovery ship, postmarked on July 25, 1975, and signed by Thomas Stafford, Vance Brand, and Deke Slayton.