(Photo:Soyuz 9 on the 1971 USSR commemorative stamp "424 hours On Earth's Orbit"
USSR Post - New stamp: Scanned 600 dpi by User Matsievsky from personal collection. Old stamp: Personal collection. Scanned and processed by Andrei Sdobnikov
USSR stamp: Cosmonauts Andriyan Nikolayev and Vitaly Sevastyanov, Soyuz 9. Series: 424 Hour Space Flight of Soyuz 9, June 1–19
File:The Soviet Union 1970 CPA 3907 stamp (Cosmonauts Andriyan Nikolayev and Vitaly Sevastyanov, Soyuz 9).jpg
Created: 7 July 1970 )
Unexplained manned Soyuz fail & What is to be done? Bob Zimmerman BehindtheBlack.com