Horizon: Man In Space
A 1965 documentary explaining some of the basics of how astronauts live in space with contributions from Frank Borman and Walter Cunningham
First transmitted in 1966, Horizon reports from the spacecraft centre in Houston, Texas, about the experiences of the astronaut; how he reacts to being in space and the stresses of launching and re-entry.
Man in Space concentrates on the results of the Gemini 7 flight and its implications for long duration flights to the moon. It has very good interviews with Frank Borman, Charles Berry and Walt Cunningham.