Rare still-sealed packet of 25 first operational editions of the Apollo-Soyuz Test Project (ASTP) mission chart, each 55 x 22.5, dated May 1975, showing the orbit and tracking stations for the historic mission. Lithographed by DMAAC 5-75, and prepared and published by the Defense Mapping Agency at the Aerospace Center. In very fine, never-before-opened condition, with folds as issued.