September 10, 1960
Proposal from D. Ustinov et al to the CPSU CC on Human Spaceflight
Formal proposal to Central Committee from a group of industrial leaders, military officials, scientists, and designers to carry out the first human spaceflight by December 1960.
March 24, 1961
Report from D. Ustinov et al to the CPSU CC on Preparations to Launch the Vostok-3A
Report to Central Committee from industrial leaders, military leaders, scientists, and designers on preparations to launch a final automated test flight before actual piloted spaceflight.
March 30, 1961
Report from D. Ustinov et al to the CPSU CC regarding the Preparation and Launch of a Manned Spacecraft
Memo from representatives of industry, the scientific community, the armed forces, the KGB, and the space designer community to the Central Committee report on final preparations for piloted spaceflight and asking for permission to launch a spaceship with a human on board.