Among his first important clients was the connoisseur and collector Johann Matthias von der Schulenburg, for whom Guardi multiple paintings with an Orientalist theme.
Many of Dufourt's larger works have been inspired by the paintings of artists as various as Brueghel, Giorgione, Rembrandt, Poussin, Guardi, Goya, and Pollock (Pasler 2011, 198, 227).
The drawings collection holds some 200 drawings by Bronzino, Guardi, Claude Lorrain, Le Brun, Oudry, Greuze, Géricault, Friesz.