THE BRITISH VIOLIN by John Milnes ed., 2000, isbn 0-9534741-2-7, The catalogue of the 1998 exhibition : 400 years of violin & bow making in the British Isles, Library edition, no 156 of 300, in slip case
GUIDE TO BRITISH LUTHERIE by Joanna Pieters (ed.), 1996, isbn 1-900306-02-6, Listing of Contemporary British Makers
Letter: Roger Graham Hargrave (photocopy) (Jul 2 2025) Photocopy of letter by R. G. Hargrave dated July 2 2025