1. IOR/L/SG/7/677 Reference (shelfmark): IOR/L/SG/7/677 Title: Coll 29/18; Transfer of B H Wilsdon IES to the Department of Scientific and Industrial Research and of F H Logan ICS to the Home Office Collection Area: India Office Records and Private Papers Languages: English Date Range: 25 Apr 1929-1 Dec 1953 Extent: 1 file