Title: Handbook for spies
First published: 1949
Description: Available in the Internet Archive https://archive.org/details/handbookspies

A British citizen becomes a spy for the Soviets against Nazi Germany, but finds the Soviets becoming more like the Fascists he opposes. There are plenty of details on espionage networking and tactics.
Subjects: Secret service, World War, 1939-1945, espionage
Places: Soviet Union, Germany
People: Alexander Foote