British Book Trade Index (WWW), searched 26 Jan. 2006 (Chetwood, William Rufus; London bookseller, 1713-1724, at the Post-House next Tom's Coffee-House Covent-Garden, Cato's Head in Russel-Court, near the Play-House &c.)
His A general history of the stage, 1749 t.p. (W.R. Chetwood)
InU/3 cent. drama files (usage: Mr. Chetwood; Author of The lover's opera; Editor of Boyle's voyages; Author of Captain Robert Boyle; W.R. C-d)
Oxford DNB v. 11, p. 360 (Chetwood, William Rufus, d. 1766; bookseller and writer)