Eliane at Sellotape Files pointed to Bezembinder who has featured a gorgeous online version of Le Brun’s System on Physiognomy by Morel d’Arleux (after Charles Le Brun).
“The present exhibition concerns a rare and astonishing album of engravings first published in 1806, finely reproducing the set of Charles Le Brun’s physiognomies – comparative drawings of human and animal faces – that had been made over 135 years earlier.”
Hope you enjoy these as much as I do! (thanks, Eliane)