Notes on drill and equipment for (USA) QF 105-mm Howitzer on SP mounting (M7) A Treatise Of Artillery: Containing I. General Contructions of Brass and Iron Guns used by Sea and Land, and their Carriages. II. General Contructions of … The Theory And Practice Of Gunnery, Treated in a New and Easy Manner. With The Construction and Use of an Instrument for readily solving the … Gun drill for Q.F. 3.7-inch Mark I Howitzer, on Marks I to IIIr carriages 1941 - Engeland Voorschrift 26/GS Publications/653 WO 7343 Gun Drill for Q.F. 3.7-inch Mark I, Howitzer on Carriage 3.7 inch, Mark 2P - Engeland Voorschrift 26/GS Publications/1467 WO 7981