Charles Grignion engravings of the academic figures of Jean-Baptiste Van Loo published by Robert Sayer.
The prints are for sale on Ebay.
Others are for sale at ISCRA
Similar engravings of academic figures were published in The Principals of Drawing by Gerard De Lairesse, published by Thomas Bowles in 1752. From left to right after F. Boucher, after C. Natoire and after Carle Van Loo. These prints are for sale on Ebay.
Greuze and Boucher (Little books on art: General editor: Cyril Davenport)
GI 1888 CHEFS OEUVRE ANCIENS CONVERSATION ESPAGNOLE CARLE VAN LOO FEMMES ROBES TOILETTES SOIGNEES HOMME COUR BAVARDAGE BANC