The breech-loading system. An historical summary of the question, with reasons for adopting muzzle-loading guns for the Field Artillery, and estimates of the probable cost Col Edward Wray, RA. Royal Arsenal Woolwich, Apr 1870.
Note on the correspondence relating to reductions in the Ordnance Establishment of the three Indian Presidencies. George W. Kellner. Simla: Military Dept, 20 Aug 1872.
Report of the special committee on ordnance, appointed by the Government of India under instructions from Her Majesty's Government, to consider the question of reducing and systematising ordnance indents on Europe, and the reserves maintained in India. Calcutta: Govt of India, 1878.
Report of committee appointed to advise the Government of India on certain matters connected with the administration and management of the Indian Ordnance Factories. Simla: Army Dept, 1920.