An Improved Tunnel Diode Memory System. - David J. Crawford; W. David Pricer; John J. Zasio (IBM J. Res. Dev., 1963)

Design considerations for a 25-nanosecond tunnel diode memory. - David J. Crawford; R. L. Moore; J. A. Parisi; J. K. Picciano; W. David Pricer (AFIPS Fall Joint Computing Conference (1), 1965)

The autoscritcher and the superscritcher: aids to cryptanalysis of the German Enigma cipher machine, 1944-6. - David J. Crawford; Philip E. Fox (IEEE Ann. Hist. Comput., 1992)