An envelope with the image of Valentina Tereshkova, the first female astronaut in the world, signed by the first 6 astronauts of the USSR, who were part of the so called First Cosmonaut Squad. The envelope contains signatures: Yuri Gagarin, German Titov, Grigory Nelyubov, Andriyan Nikolaev, Pavel Popovich, and Valery Bykovsky. Valentina Tereshkova made her space flight on the Vostok 6 spacecraft on June 16, 1963. Russian Soviet Era, Space Collections, Autographs For Collectors.