Investigation into Apollo 204 Accident. hearings before the United States House Committee on Science and Astronautics, Subcommittee on NASA Oversight, Ninetieth Congress, first session, on May 10, 1967. Volume 3 :

Committee Serial No. 3. Describes corrective modifications performed on Apollo spacecraft to prevent a repetition of the Apollo 204 accident, during which 3 astronauts perished at Kennedy Space Center on Jan. 27, 1967.