3 images. Russian language class (Caltech JPL), 25 September, 1958. Carl Berlund (associate Research Engineer); Josef L. Zygielbaum (Instructor); Dr. Henry L. Richter (Research Group Supervisor).; Caption slip reads: "Photographer: Gray. Date: 25-09-1958. Reporter: MacMillan. Assignment: Russian language class, Cal Tech's JPL. 105,106: Josef L. Zygielbaum, class instructor at blackboard. 109,110: Carl Berlund, associate research engineer (left); Instructor Zygielbaum, and Dr. Henry L. Richter, research group supervisor. 100: Test Engineer George Bolta converses in Russian with Zygielbaum."