1. IOR/R/20/B/518 Reference (shelfmark): IOR/R/20/B/518 Title: File 40/2 Pt I of 1937 Accounts: trade marks, patents and designs, etc., in Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: 2 Mar 1937-12 Sep 1940 Extent: 1 file