STRADIVARI VARNISH by Brigitte Brandmair, Stefan-Peter Greiner, 2010, isbn 978-3-00-028537-0, Scientific Analysis of his Finishing on Selected Instruments
THE MYSTERY OF CREMONA VARNISH by W. Christ-Iselin, 1923, An attempted solution
THE MANUFACTURE OF VARNISHES, OIL CRUSHING, REFINING AND BOILING AND KINDRED INDUSTRIES by A Livache, 1899
STAINING & POLISHING by Evans Bros. (pub.), Varnishing and other methods of finishing wood, with appendix of recipes, Signed by Roger Hargrave
THE VARNISHES OF THE ITALIAN VIOLIN MAKERS OF THE SIXTEENTH, SEVENTEENTH AND EIGHTEENTH CENTURY AND THEIR INFLUENCE ON TONE by George Fry, 1904, re-bound, signed by Roger Hargrave
VIOLIN VARNISH by William Fulton, 1988, Formulation Manual
TURPENTINE VIOLIN VARNISH by William Fulton, 1988, with inscription from the author to Roger Hargrave
THE VARNISHES OF THE ITALIAN VIOLIN MAKERS OF THE SIXTEENTH, SEVENTEENTH AND EIGHTEENTH CENTURY AND THEIR INFLUENCE ON TONE by George Fry, 1904
VIOLIN VARNISHES by Josef & Reiner Hammerl, Information on resins and basic materials for violin varnishing
VIOLIN VARNISH by Joseph Michelman, 1946, A Plausible Re-creation of the Varnish used by the Italian Violin Makers between the years 1550 and 1750, A.D.
VIOLIN VARNISH & COLORATION by Martins Roberts Zemitis, 1981, with inscription by the author, signed by Roger Hargrave
PAINTERS' OILS, COLOURS AND VARNISHES by Paul N Hasluck, 1913, With Numerous Engravings and Diagrams
PAINTERS' COLOURS, OILS AND VARNISHES by George H Hurst, 1892, A Practical Manual, Edition limited to 1000 copies signed from roger Hargrave and ?, with old newspaper sheets
VIOLIN VARNISH Notes and articles from the workshop of Koen Padding, 2015
Letter: Roger Graham Hargrave (photocopy) (Jul 2 2025) Photocopy of letter by R. G. Hargrave dated July 2 2025