Bernd Krysmanski, "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). https://doi.org/10.11588/artdok.00008019
See 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), 24-30. https://doi.org/10.11588/artdok.00008019
