Description

Group photograph of ten men posed in two rows in a laboratory. From left, back row, are pictured Harold Levinton, Pap Backer, Bill Atwood, John Kaye, Jim Daily, and Arthur T. Ippen. First row, from left, are Ralph Watson, Rudy (no last name given), and Ed Simmons.

Original caption: "Pump lab at Cal Tech 1934. 1. Harold Levinton; 2. Pap Baker; 3. Bill Atwood; 4. John Kaye; 5. Jim Daily; 6. Art Ippen. First row: Ralph Watson, Rudy, Ed Simmons."