Soviet Spys in Germany to 1941

[Carl Schwamberger]

Any recommended sources on the Soviet espionage in Germany or Europe previous to 22 June 1941? I ran across mention of a Lt Heinz Schulze-Boysen of the Luftwaffe is identified as a Soviet agent in Triggs 'The Defeat of the Luftwaffe' Anyone familiar with that individual or others?

[Art]

The known and (relatively) recent book discussing Soviet intelligence and sources of information in 1941 is "What Stalin knew: the enigma of Barbarossa":
https://www.amazon.com/What-Stalin-Knew ... 030011981X

[Carl Schwamberger]

...What Stalin knew: the enigma of Barbarossa":
https://www.amazon.com/What-Stalin-Knew ... 030011981X

Thanks

[otlichnik]

Pavel Sudoplatov's Special Tasks provides some coverage - but it is anecdotal - limited to his reminisces - not a broad coverage of the topic.

Shawn

[Carl Schwamberger]

Thank you

[kaipetri16#66]

Cheers. Newbie from Finland. Some sources say the Red Orchestra was Bletchley Park more or less. Not saying Boysen et co were spying as well. There is proof they got info and propably sent it through Switzerland.

[Carl Schwamberger]

If you were trying to mask the origin of the ULTRA information Switzerland is a logical location for such a transfer of information.