ULTRA
Publisher: Clearwater Publishing Co.
Published: 1979
Place of publication: New York, N.Y
Language: eng
Format: Microform
Number of pages: 336
Subjects: World War, 1939-1945 -- Secret service -- Sources.; World War, 1939-1945 -- Secret service -- Great Britain.; World War, 1939-1945 -- Secret service -- Germany.
Notes: Library copy imperfect: Scattered frames illegible.
Table of contents: title: Reels 1-71, 73-143. Military signals; title: Reels 144-316. Naval signals; title: Reels 317-336. Military signals supplement.