Title: Memorandum, Wenger to F-20, Proposed Draft of Memorandum to be Read to Colonel O'Conner Regarding RATTAN, June 7, 1945, Top Secret Ultra.
Creator: Memorandum Wenger
Date in Source: June 7, 1945
Subject: Great Britain - SIGINT - USSR "Great Britain" SIGINT "codes and ciphers" "intelligence liaison" - Top Secret Ultra
Format: 2 p.
Note: RG-457, Historic Cryptologic Collection, Box 1471, File: Rattan Liaison, NA, CP.