Topics:
+ Belka and Strelka on stamps
+ Dogs on stamps of the Soviet Union
+ Moscow Kremlin on stamps
+ Sputnik on stamps
+ Stamps of the Soviet Union, 1960, all stamps
Licensing:
Media information:
Technical Topics:
+ PD-RU-exempt (stamps)
+ Stamps, uploaded by Andrew Butko from various sources (2000-2999 px on long side)