The British Catalogue of Printed Maps---(Bowles, John)

Tooley's dictionary of mapmakers, 1999-2004---T.1, p.178 (Bowles, John [c. 1701-1779]. Younger son of Thomas I, apprenticed to his elder brother Thomas II in the joiners' Company)

An Accurate Map of Carmarthen..., 1775-1795---(Printed for...John Bowles at the Black Horse in Cornhil)

WWW BN-OPALINE 15/02/2006---(Bowles, John 1701-1779, Fils de Thomas Bowles)