Items 39-42, Early Publications, Item 075-039: detectives; Practical Instructions in Detective Work; Includes description of skills that a detective needs to possess, tips on identification, slang glossary, index of agencies, etc. 2nd ed.; author n.a.; National Detective System, Freemont, Nebraska; 32 pages., undated

Items 39-42, Early Publications, Item 075-039: detectives; Practical Instructions in Detective Work; Includes description of skills that a detective needs to possess, tips on identification, slang glossary, index of agencies, etc. 2nd ed.; author n.a.; National Detective System, Freemont, Nebraska; 32 pages., undated, Box: 75, Folder: 8. International Association for Identification Records, A&M 3518. West Virginia and Regional History Center. https://archives.lib.wvu.edu/repositories/2/archival_objects/44934 Accessed November 24, 2024.