"For some years past all ordnance manufactured for the Service have been of steel and breech loading. These modern ordnance, as they are termed, differ considerably from the wrought-iron and stell muzzle-loading pieces which, as regards...
This is designed primarily for use by organization commanders in the instruction of en-listed men of antiaircraft artillery units (except searchlight batteries) of the Coast Artillery Corps.
"This 1952 manual is published for the information and guidance of personnel responsible for field and depot maintenance of fuze setters M13, M13A1, M18, and M18A1."