Passport system in the Soviet Union
The passport system of the Union of Soviet Socialist Republics was an organisational framework of the single national civil registration system based upon identification documents, and managed in accordance with the laws by ministries and other governmental bodies authorised by the Constitution of the USSR in the sphere of internal affairs.
Soviet Union passport for travel abroad
Soviet passport before 1974
Propiska in the Soviet Union
A propiska was both a written residency permit and a migration-recording tool, used in the Russian Empire before 1917 and in the Soviet Union from the 1930s.
Internal passport, issued 1910 in Imperial Russia
Signing in (top) and signing out (bottom) Propiska in a Tajikistan Passport.