Signal training. Vol. III : Switchboards U.C. 10-line and 6-line - Engeland Voorschrift, 26/Publications/5090, 26/GS Publications/232 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 Withdrawal - Engeland Voorschrift, 26/GS Publications/958 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