Concept art of an Agena booster satellite in the Space Shuttle payload bay (Phase B, C-040-A).
"In the early 1970s Lockheed studied the use of Agena as a payload booster in the Space Shuttle payload bay. An Agena-C with an increased diameter was proposed, but never built."
Date: February 25, 1972
NASA ID: NAS9-11949









