From the description of Flight Qualification Test Requirement : memo to M. Mesnard, R. Crabtree, B. Berger, D. Alcorn, 1963 Jun 18. (Jet Propulsion Laboratory Library and Archives). WorldCat record id: 733098007From the description of Ranger 6 Schedule : memo to Ranger Personnel, 1963 Jun 18. (Jet Propulsion Laboratory Library and Archives). WorldCat record id: 733098005
Wolfe was Spacecraft System Manager.
From the description of Ranger Block 3 Spacecraft Schedule, Revision A : memo to Ranger Distribution, 1963 Mar 1. (Jet Propulsion Laboratory Library and Archives). WorldCat record id: 733097923From the description of Ranger Block 4 Schedule and Guidelines : memo to Ranger Distribution, 1963 Mar 19. (Jet Propulsion Laboratory Library and Archives). WorldCat record id: 733097423