Jan. 17th, tape 1, side 1 pages 1 through 43
Jan. 17th, tape 1, side 1, pages 44 through 86
Jan. 17th, tape 1, side 2, pages 87through 166
1938 "Scheme to use gas-filled thyratrons"
Bob Mumma, the first accumulator and calculator
Radio controlled land mines for Signal Corps
Thtyratron development and specs
Binary to decimal conversion in the Chicago counter
Contract for Aberdeen Proving Ground
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