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69        “Herman Hollerith is a man”: Austrian, Herman Hollerith, p. 339.

“I was a student in civil engineering”: Zuse, “Some Remarks,” p. 611.

71        “One Sunday evening, at Dr. Billings’ ”: Truesdell, The Development of Punch Card Tabulation, p. 31.

73        “I was traveling in the West “: Austrian, Herman Hollerith, p. 15.

84        “brass for brain “: Kelvin, Papers, vol. 6, p. 272.

86        “I was trying to solve”: Bush, Pieces of the Action, p. 161.

91        “This is th e work of a real thinker”: Hyman, Charles Babbage, p. 244.

94        “In 1939, due to the perfectly private state “: Zuse, “Some Remarks,” p. 612.