1. IOR/L/MIL/17/5/2214 Reference (shelfmark): IOR/L/MIL/17/5/2214 Title: Notes on air photographs, 1928. Calcutta: GSI, 3rd edn 1928. Scope & Content: diagrams, For official use only Collection Area: India Office Records and Private Papers Languages: English Date Range: 1928 Extent: [i], 22p, 18cm