Isidore-Stanislas Helman, Le charlatan français, 1777, etching and engraving, National Gallery of Art, Washington. https://dartabase.art/cite/nga/2907

Isidore-Stanislas Helman, Le charlatan allemand, 1777, etching and engraving, National Gallery of Art, Washington. https://dartabase.art/cite/nga/2908

Isidore-Stanislas Helman, Le jardinier galant, 1778, etching and engraving, National Gallery of Art, Washington. https://dartabase.art/cite/nga/2835

Isidore-Stanislas Helman, Le roman dangereux, 1781, etching and engraving, National Gallery of Art, Washington. https://dartabase.art/cite/nga/2734

Isidore-Stanislas Helman, Le roman dangereux, 1781, etching and engraving, National Gallery of Art, Washington. https://dartabase.art/cite/nga/3054