↑Woeckel, Gerhard (1969). New German Biography (in German). Vol.8. Berlin: Duncker & Humblot. p.653. ISBN3-428-00189-3.
↑Curl, James Stevens; Wilson, Susan (26 February 2015). The Oxford Dictionary of Architecture. OUP Oxford. p.1163. ISBN978-0-19-105385-6.
↑Badde, Paul (2012). The True Icon: From the Shroud of Turin to the Veil of Manoppello. Ignatius Press. p.193. ISBN978-1-58617-591-7.
↑Marston, Robert Bright; Westwood, Thomas; Satchell, Thomas (6 January 2024). Bibliotheca Piscatoria; A Catalogue of Books on Angling, The Fisheries and Fish-Culture. BoD – Books on Demand. p.4. ISBN978-3-385-30636-3.
↑Potter, Alfred Claghorn; Davis, Andrew McFarland; Bartlett, John; Morgan, Morris Hicky; Weeks, Stephen Beauregard; Yust, William Frederick; Brown, William Garrott; Bolton, Charles Knowles (1895). A List of Portraits in the Various Buildings of Harvard University: Prepared Under the Direction of the Late Justin Winsor, Librarian. Library of Harvard University. p.8.