Cosmonauts | Other

Commemorative envelope signed by Popovich, V. Zholobov, A. Filipchenko, and Pyotr Klimuk in Russian, honoring the 20th anniversary of the launch of Sputnik with a postmark from October 4, 1977.

Stamp block signed by Boris Petrov, commemorating the first experimental space station created on January 16, 1969. Postmarked January 22, 1969, it includes images of four Russian cosmonauts. Petrov was a prominent Soviet engineer and space science leader.

Stamp signed by Gherman Titov, the second man to orbit Earth, commemorating his achievement. The Hungarian 60 fillér stamp, depicting Titov's image and a representation of his spacecraft, includes his signature in "Titov". Titov was the youngest space traveler at age 25.