1. DMO/3/21 Reference (shelfmark): DMO/3/21 Title: 'Telegraphic communications with Stations abroad from the point of view of Imperial Defence.' By Henry Brackenbury, Lieut.-General, D.M.I. and Percy Lake, Captain, D.A.A.G. Collection Area: Map Collections Languages: English Date Range: 1889 Extent: 15 pages