L-R: front: Archie King, L. H. Adams, Hugo Benioff, Beno Gutenberg, Harold Jeffries, Charles Richter, Arthur Day, Harry Wood, Ralph Arnold, John P. Buwalda; top: Alden Waite, Perry Byerly, Harry Reid, John Anderson, Fr. J. P. Macelwane. Geology/Geophysics.
Original in Richter Papers 23.3.
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