The service of security and information,
Book • 1903
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Mentioned as pretty much the first American how-to book on intelligence, by army officer Arthur L. Wagner.

Mark Stout, "World War I and the Foundations of American Intelligence" (UP of Kansas, 2023)
Mentioned as the first American how-to manual on intelligence written by Arthur L. Wagner.

Mark Stout, "World War I and the Foundations of American Intelligence" (UP of Kansas, 2023)


