Secret Intelligence Service [complete in 21 volumes]; Concise Instruction in Modern Methods Employed in the Development of Civil and Criminal Cases by American and Foreign Secret Service Operators. T. Dickerson COOKE, INSTITUTE OF APPLIED SCIENCE, PRIVATE DETECTIVES.
Secret Intelligence Service [complete in 21 volumes]; Concise Instruction in Modern Methods Employed in the Development of Civil and Criminal Cases by American and Foreign Secret Service Operators

Secret Intelligence Service [complete in 21 volumes]; Concise Instruction in Modern Methods Employed in the Development of Civil and Criminal Cases by American and Foreign Secret Service Operators

Chicago: Institute of Applied Science, [1920s]. 19th edition. Pamphlet. 8vo. 21 staple-bound pamphlets without wraps (as issued).
Minor wear to outer pages, with some small chips, closed tears, and fingerprint smudges. A few notations in pencil in margins. Pamphlets are complete, clean, and bound together with string.
This is a complete correspondence course that teaches one to be a Secret Intelligence Operator, which is to say, a private detective. These pamphlets are a publication of the defunct Chicago Institute of Applied Science, which ran from 1916 into the 1970s and mostly published educational forensic science material for the layman, notably the more common A Study of Finger Prints. This course, which covers in 21 lessons the basics of detective work and investigation, was originally sold through magazine ads, a single pamphlet at a time. An absolutely fascinating find, particularly Lesson 12, titled "Portrait Parle" which includes a glossary of slang used by contemporary criminals. The next time you overhear a moll-buzzer say "That Yegg-man in the milky togs belched to the bull-out-of-harness!" you'll have no trouble translating. Very good. Item #1611

Price: $75.00