Drill regulations for signal troops Signal book United States army 1912 training manual / united states army Basic signal communication : students manual for all arms training manual / united states army Basic signal communication : instructors guide and all arms training manual / united states army Telephone switchboard operator : students manual for all arms Signal communication for all arms training manual / united states army Message center specialist : students manual for all arms : 1923 training manual / united states army field lineman : instructors guide for all arms training manual / united states army Telegraph operator : instructors guide for all arms : 1925 training manual / united states army Telegraph operator : students manual for all arms Leidraad onderwijs lichaamsoefeningen (O.L.O.) : uitgegeven op last van den opperbevelhebber van land- en zeemacht (22 dec. 1939, sectie V, no. 7108S) Grensbewaking : losbladig commentaar op de voorschriften betreffende de politiaire grensbewaking / door G. Seppen en H. C. Fraaij
