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Files W.F.F. Archive Correspondence, Memoranda, and Personnel File Records Friedman-Hagelin Correspondence File, 1957-1958 (2 Folders)
A New Stepping System
Document A60661
90.95 KiB
PDF
Friedman Correspondence to Hagelin
Document A60786
115 KiB
PDF
Friedman Letter to Hagelin About M-209 Converter
Document A60722
76.91 KiB
PDF
Friedman Letter to Hagelin-Dr. Hell's Machine
Document A60735
131.36 KiB
PDF
Friedman Letter-Hagelin Machines
Document A60712
167.84 KiB
PDF
Friedman Memorandum for Deputy Director and Director, NSA Concerning Pocket Coder; Involves Boris Hagelin
Document A60814
52.5 KiB
PDF
Hagelin Correspondence to Friedman-Hell's Key Generator
Document A60746
26.59 KiB
PDF
Hagelin Letter to Friedman
Document A60798
111.23 KiB
PDF
Hagelin Letter to Friedman
Document A60823
60.84 KiB
PDF
Hagelin Letter to Friedman-Birthday Greeting and Other Chat
Document A60741
86.22 KiB
PDF
Hagelin Letter to William F. Friedman-M-209 Patent
Document A60725
238.47 KiB
PDF
Hand Written Notes on A Report; Question of Consultant Status
Document A60751
35.24 KiB
PDF
Issue of Converter M-209 to Foreign Nations
Document A60700
149.98 KiB
PDF
Letter from Boris Hagelin to William F. Friedman
Document A60812
75.21 KiB
PDF
Letter from Hagelin to William Friedman
Document A60778
80.48 KiB
PDF
Letter to Boris Hagelin from William Friedman
Document A60817
77.67 KiB
PDF
Memorandum for Record-Hagelin M-209
Document A60676
101.38 KiB
PDF
Memorandum for the Record-Hagelin Negotiations
Document A60669
1.2 MiB
PDF
Patent for-Cryptogrammic Coding and Decoding Apparatus
Document A60683
666.75 KiB
PDF
Personal Letter from Boris Hagelin to William Friedman
Document A61614
130.8 KiB
PDF
Pocket Coder for the Diplomat on the Move
Document A60694
146.52 KiB
PDF
William F. Friedman Letter to B. Hagelin
Document A60809
71.25 KiB
PDF
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