Petrus Camper facial angles by son Adriaan Gilles - first page, Adriaan Gilles Camper, 1791

Title page of book on facial angles; published posthumously by adriaan gilles camper for his father petrus camper, whose 2 famous lectures for the amsterdam drawing academy in 1770 were reported in the dutch literature society's verhqandelingen without his drawings, and he had always intended to make a book with engravings after the drawings. Reinier vinkeles made the engravings in 1785, but publishing only occurred after camper sr. Died in 1789. Date: 1791.