The engine at Fresnes has "some claim to distinction, as it was chosen by the celebrated architect Bernard Forest de Belidor for illustration and description in his well-known work Architecture Hydraulique (1737)" [H.W. Dickinson, A short history of the steam engine, 1938], after which engravings these three drawings were probably executed. With ink sketch re same and 'Memoire pour l'intelligence de la machine a feu...', With also another ink and colour wash drawing of an unidentified atmospheric engine, slightly different from the Fresnes design.