Training Manuals

1920s TM s Basic Signal Communication: Training Manual.

• TM-20 Basic Signal Communications, Students,
• TM-21 Basic Signal Communications, Instructors,
• TM-22 Telephone switchboard operator, students,
• TM-23 Telephone switchboard operator, instructors,
• TM-24 message center Specialist, Students
• TM-25 message center Specialist, Instructor
• TM-26 Radio Operator, students, 1924, File:TM-26.pdf
• TM-27 Radio Operator, instructors, 1925, File:TM-27 1925.pdf
• TM-28
• TM-29
• TM-30