Tactics instruction memorandum : Field artillery observation Materiel instruction memorandum : The Firing Battery 75mm Pack Howitzer, M-1 Materiel instruction memorandum : The Firing Battery 155mm Gun M1 Materiel instruction memorandum : Fuzes and Boosters Materiel instruction memorandum : Instruction for Monthly (1,000-Mile) Maintenance Service Materiel instruction memorandum : Field Expedients Gunnery instruction memorandum : 12-inch graphical firing tables Gunnery instruction memorandum : Survey plans and procedures in the field artillery battalion and regiment Materiel instruction memorandum : Slings for Transport Loading Materiel instruction memorandum : Construction of Field Artillery Materiel Tactics instruction memorandum : Organization and Functioning of Field Artillery of the Marine Division Gunnery instruction memorandum : Exercises in Gunnery Mathematics