Book: 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.
• See pp.309-310, no.28.Book: Russell, Charles Edward. 1926 English mezzotint portraits and their states from the invention of mezzotinting until the early part of the 19th century: Catalogue of Corrections of and Additions to Chaloner Smith's "British Mezotinto Portraits.". 2.
• See pp.80-81, no.28.