At blackboard, showing his space rendezvous concept for lunar landings. Lunar Orbital Rendezvous (LOR) would be used in the Apollo program. Photograph published in Space Flight Revolution - NASA Langley Research Center From Sputnik to Apollo (page 247), by James R. Hansen.

Portrait of John D. Bird "Jaybird" designed the LOR Lunar Orbit Rendezvous. Published in NASA SP-4308 Page 229.

Portrait of George M. Low, he transferred to NASA headquarters in Washington, D.C., where he served as Chief of Manned Space Flight. In this capacity, he was closely involved in the planning of Projects Mercury, Gemini, and Apollo. NASA Biographies site.