Correspondence with Sir W.G. Armstrong and Co., George Rendel, and Colonel P. Scratchley, 1878-1880 Unit ID: 5895-5926 Date: 1878/1880
Correspondence with Sir W.G. Armstrong and Co., George Rendel, Sir William Jervois and Sir Arthur Blyth, 1878 Unit ID: 5884-5894 Date: 1878
Correspondence with Sir W.G. Armstrong and Co., P. Scratchley and E.H. Steward, 1880-1881 Unit ID: 5927-5948 Date: 1880/1881