The Story In Depth

There are many documented sources of information regarding the Dayton code breaking effort. The most dramatic and detailed are at the National Archives at College Park, Maryland. However, some documents remain in the NCR Archive at Dayton History. And there is much research yet to be done. The list below contains links to documents and information available at this site.

In This Section

• 1938 Proposal
• The Accumulator
• The Story of You in Navy Blue
• Use of Navy WAVES in Dayton
• 1942 Research Report
• Bombe correspondence
• CNO to Adm. King / Mar 1943
• Records of the USNCML
  • Orders 22 Sept 1943
  • Orders 22 Nov 1944
  • Orders 1 Oct 1945
  • Orders 7 Feb 1946
  • Orders 28 Jun 1946
  • Orders 15 Aug 1946
  • Navy Contract NXs7892
  • Numbers used in reference to Navy Equipment
  • Personnel numbers
  • Commendation
  • Orders 3 Jan 1945
• Wenger/Report Oct 1944
• Teletype messages, June 1943
  • Glossary of terms in messages
  • 21 Jun 1943 2:45 am
  • 21 June 1943 12:40 pm
  • Personnel in teletype messages
  • 21 June 1943 3:50 pm
  • 21 June 1943 5:52 pm
  • 21 June 1943 6:03 pm
  • 21 Jun 1943 7:35 pm
• Electronics
  • The 1939 Desch/Mumma Calculator
  • Cryptanalytic Equipment in operation
  • Specs for the Thyratron
  • Chassis of the Cryptanalytic Bombe
• Patents and related Documents
  • Patents originating in the Electrical Research Laboratory
  • Secrecy Order on Patent Applications 15 June 1945
  • Patent applications, June 1945
  • Final Report
  • Op-20-G conference on patents 11jul45
• Bombe Project History, May 44
• Presidential Medal for Merit
• History Op-20-G-4E/ late 1945
• Meader/Postwar Report
  • Meader/Postwar Report, pages 13-20
  • Meader/Postwar Report, pages 21-25
• Desch-Mumma 1973 Interview
  • Jan. 17, 1973: pages 1-43
  • Jan. 17, 1973: pages 44-86
  • Jan. 17, 1973: pages 87-166
  • Jan. 18, 1973: pages 1-43
  • Jan. 18, 1973: pages 44-86
  • Jan. 18, 1973: pages 88-125 (in progress)