Book: Cook, Cyril. 1953 The Life and Work of Robert Hancock.
• For information on and illustrations of prints: Items 84, 32, 33Book: Handley, Joseph M. & Spero, Simon. 1991 18th Century English Transfer-Printed Porcelain and Enamels.
• Baluster Worcester mug with same Pitt print and design source: pp. 16-17, no. 1.9.Book: Handley, Joseph M. & Spero, Simon. 1991 18th Century English Transfer-Printed Porcelain and Enamels.
• Liverpool enamel plaque with black-printed portrait of Pit after same source: p. 290, no. 14.2, c. 1760, noting it is companion to King of Prussia plaque, both being 7 Years War heros.Book: Manchip, David. An Encyclopaedia of British Ceramic Painters, Gilders and Modellers.
• Brief biography of Robert Hancock (c. 1729-1816): pp. 164-5, discussing work at Battersea Enamel Factory, Worcester works, Bristol, and Caughley.Book: Beddoe, Stella. 2015 A Potted History: Henry Willett's Ceramic Chronicle of Britain.
• Three varient printed portraits of Pitt on Liverpool and (2) Worcester porcelain mugs: p. 106, nos. 481, 480, 477, with useful historical discussion re Pitt the Elder.