1. IOR/R/20/B/1164 Reference (shelfmark): IOR/R/20/B/1164 Title: File C.21/1 Pt II Sec. Secret Documents: admiralty documents in possession of the Port Officer Aden and Civil Administrator Kamaran and Perim Collection Area: India Office Records and Private Papers Languages: English Date Range: Dec 1939-Jan 1940 Extent: 1 file