Henderson, Susan W. (1977). "Frederick the Great of Prussia: A Homophile Perspective". Gai Saber. 1 (1): 46–54.; also see: Johansson, Warren (2016). "Frederick II (The Great) of Prussia (1712–1786)". In Dynes, Wayne R. (ed.). Encyclopedia of Homosexuality. Vol. I. Oxfordshire, UK: Taylor & Francis. pp. 428–429.
Wikimedia Commons page. Disputedly this is the only portrait for which Frederick is said to have sat during his reign. According to Karin Schrader, Der Bildnismaler Johann Georg Ziesenis (1717–1776) (Münster 1995), pp. 101–119, it is not clear that Frederick sat for this portrait. In fact, Frederick had a large, hooked nose and considered himself as ugly as a scarecrow. Therefore, he refused to sit for official state portraits which show him either stoic or heroic while this overly handsome portrait shows him smiling and facing. Arthistoricum.net page of the University of Heidelberg
Bernd Krysmanski, "Evidence for the homosexuality and the anal erotic desires of the Prussian king", in Does Hogarth Depict Old Fritz Truthfully with a Crooked Beak? – The Pictures Familiar to Us from Pesne to Menzel Don’t Show This, ART-dok (University of Heidelberg: arthistoricum.net, 2022), pp. 24–30. https://doi.org/10.11588/artdok.00008019
Vogtherr, Christoph Martin (2001). "Absent Love in Pleasure Houses. Frederick II of Prussia as Art Collector and patron". Art History. 24 (2): 231–246. doi:10.1111/1467-8365.00262. ISSN0141-6790. PMID18751326.
Steakley, James D. (1988). "Sodomy in Enlightenment Prussia: From Execution to Suicide". Journal of Homosexuality. 16 (1–2): 163–175. doi:10.1300/J082v16n01_09. PMID3069916.
Bernd Krysmanski, "William Hogarth is the only artist who shows the gay Fritz truthfully with a brown complexion and an aquiline nose"", in Does Hogarth Depict Old Fritz Truthfully with a Crooked Beak? – The Pictures Familiar to Us from Pesne to Menzel Don’t Show This, ART-dok (University of Heidelberg: arthistoricum.net, 2022), 22–26. https://doi.org/10.11588/artdok.00008019
Numa Praetorius, "Voltaire und die Homosexualität", Der Kreis: Eine Monatsschrift, 11, nos. 7–9 (1943). [1], referring to a book by Dr. Paul D'Estrées (pseudonym of a well-known Parisian doctor): "Les Infames sous l'ancien régime", which had only appeared in 200 copies at the time and is kept in the Bibliothèque Nationale.
Vogtherr, Christoph Martin (2001). "Absent Love in Pleasure Houses. Frederick II of Prussia as Art Collector and patron". Art History. 24 (2): 231–246. doi:10.1111/1467-8365.00262. ISSN0141-6790. PMID18751326.
Steakley, James D. (1988). "Sodomy in Enlightenment Prussia: From Execution to Suicide". Journal of Homosexuality. 16 (1–2): 163–175. doi:10.1300/J082v16n01_09. PMID3069916.
Das Gupta, Oliver (23 January 2012). "Der Schwule Fritz" [The Gay Fritz]. Süddeutsche Zeitung (in German). Archived from the original on 17 February 2021.
uni-heidelberg.de
archiv.ub.uni-heidelberg.de
Krysmanski, Bernd (2019), "Belege für die Homosexualität und die analerotischen Gelüste des Preußenkönigs," in Nur Hogarth zeigt den Alten Fritz wahrheitsgemäß mit krummem "Zinken" – die uns vertrauten Bilder von Pesne bis Menzel tun dies nicht (Heidelberg: arthistoricum.net). https://archiv.ub.uni-heidelberg.de/artdok/6399 ("Evidence for the Homosexuality and the Anal-Erotic Desires of the Prussian King," in Only Hogarth Depicts the Old Fritz Truthfully with a Crooked "Beak" – The Pictures Familiar to Us from Pesne to Menzel Don't Do This), p. 27: "Dass der Preußenkönig homosexuelle Neigungen hatte, war schon dem 18. Jahrhundert wohlbekannt." ("That the Prussian king had homosexual tendencies was well known as early as the 18th century.")
uni-trier.de
friedrich.uni-trier.de
Œuvres de Frédéric le Grand, Tome XX, Correspondance Tome V: IV. Correspondance de Frédéric avec M. Darget (Mai 1749 - 6 Septembre 1771), no. 6.
Das Gupta, Oliver (23 January 2012). "Der Schwule Fritz" [The Gay Fritz]. Süddeutsche Zeitung (in German). Archived from the original on 17 February 2021.
War Friedrich schwul oder nur not-homosexuell?, Die Welt, 23 January 2012. Eva Ziebura is a biographer of his brother Prince Henry: Eva Ziebura: Prinz Heinrich von Preußen. Biographie (in German), publisher; Aufbau-Taschenbuch-Verlag, Berlin, 496 pages, 2004, ISBN3746617707
wikimedia.org
commons.wikimedia.org
Wikimedia Commons page. Disputedly this is the only portrait for which Frederick is said to have sat during his reign. According to Karin Schrader, Der Bildnismaler Johann Georg Ziesenis (1717–1776) (Münster 1995), pp. 101–119, it is not clear that Frederick sat for this portrait. In fact, Frederick had a large, hooked nose and considered himself as ugly as a scarecrow. Therefore, he refused to sit for official state portraits which show him either stoic or heroic while this overly handsome portrait shows him smiling and facing. Arthistoricum.net page of the University of Heidelberg
wikipedia.org
de.wikipedia.org
Eva Ziebura, Prinz Heinrich von Preußen (Berlin: Stapp, 1999), pp. 44–48. The "handsome Marwitz" is presumably identical to the member of the von der Marwitz family mentioned on the Rheinsberg obelisk (without mentioning his first name) as "quartermaster in the king's army" with the life span 1724–1759.
Vogtherr, Christoph Martin (2001). "Absent Love in Pleasure Houses. Frederick II of Prussia as Art Collector and patron". Art History. 24 (2): 231–246. doi:10.1111/1467-8365.00262. ISSN0141-6790. PMID18751326.