Book: Bromley, Henry. 1793 Catalogue of Engraved British Portraits: from Egbert the Great to the Present Time. Consisting of the Effigies of Persons in Every Walk of Human Life ... With an Appendix, Containing the Portraits of Such Foreigners as ... may Claim a Place in the British Series. Methodically Disposed in Classes, and Interspersed with a Number of Notices Biographical and Genealogical, Never before Published.
• Print listed on p.442Book: Smith, John Chaloner. 1884 British Mezzotinto Portraits; Being a Descriptive Catalogue of These Engravings from the Introduction of the Art to the early part of the present century. 1. 1-460.
• Print listed as no. 285, pp. 410-411.Article: Fleischer, Roland E. 1987 "Gustavus Hesselius and Penn Family Portraits: A Conflict between Visual and Documentary Evidence". American Art Journal. 19 (3): 4-18.
• See fig. no. 5, p. 7.