R.M.Lenox: 1500
R.M.Lenox: 1568, Jacopo Bassano, The Mocking of Christ [pastel] -- National Gallery of Art (Washington)
R.M.Lenox: 1741 (ca.), Maurice Quentin de La Tour, Portrait of Gabriel Bernard de Rieux [pastel] -- Getty Museum (Los Angeles)
R.M.Lenox: 1850
R.M.Lenox: 1858, Jean-François Millet, Hanging Out the Laundry [pastel] -- Getty Museum (Los Angeles) (special exhibition)
R.M.Lenox: 1859, Eugène Boudin, Blue Sky, White Clouds [pastel] -- National Gallery of Art (Washington) (special exhibition)
R.M.Lenox: 1859, Eugène Boudin, Moon Rising Over the Estuary -- National Gallery of Art (Washington) (special exhibition)
R.M.Lenox: 1865 (ca.), Jean-François Millet, Shepherdess and Her Flock [pastel] -- Getty Museum (Los Angeles)
R.M.Lenox: 1866 (ca.), Jean-François Millet, Peasants Resting (also known as Le Briquet) [pastel] -- Getty Museum (Los Angeles) (special exhibition)
R.M.Lenox: 1866, Jean-Francois Millet, Calling Home the Cows [pastel] -- National Gallery of Art (Washington)
R.M.Lenox: 1866, Jean-Francois Millet, Falling Leaves [pastel] -- National Gallery of Art (Washington)
R.M.Lenox: 1869, Edgar Degas, Fishing Boat at the Entrance to the Port of Dives [pastel] -- Metropolitan Museum of Art (New York)
R.M.Lenox: 1869, Edgar Degas, Madame Theodore Gobillard (Yves Morisot) [pastel] -- Metropolitan Museum of Art (New York)
R.M.Lenox: 1873, James McNeill Whistler, Nocturne: Battersea Bridge [chalk and pastel] -- National Museum of Asian Art (Washington)
R.M.Lenox: 1874 (ca.), Edgar Degas, The Rehearsal Onstage [pastel] -- Metropolitan Museum of Art (New York)
R.M.Lenox: 1877 (ca.), Edgar Degas, Dancer Taking a Bow (The Prima Ballerina) [pastel] -- Getty Museum (Los Angeles) (special exhibition)
R.M.Lenox: 1877, Auguste Renoir, The Milliner [pastel] -- Metropolitan Museum of Art (New York)
R.M.Lenox: 1877, Edgar Degas, Cafe-Concert [pastel] -- National Gallery of Art (Washington)
R.M.Lenox: 1879, James McNeill Whistler, The Beggars - Winter [chalk and pastel] -- National Museum of Asian Art (Washington)
R.M.Lenox: 1880 (ca.), Edgar Degas, Dancer with a Fan [pastel] -- Metropolitan Museum of Art (New York)
R.M.Lenox: 1880, Edgar Degas, The Ballet [pastel] -- National Gallery of Art (Washington)
R.M.Lenox: 1880, Edgar Degas, Two Women [pastel] -- National Gallery of Art (Washington)
R.M.Lenox: 1880, James McNeill Whistler, Bead Stringers [crayon and pastel] -- National Museum of Asian Art (Washington)
R.M.Lenox: 1880, James McNeill Whistler, The Church of San Giorgio Maggiore [pastel] -- National Gallery of Art (Washington)
R.M.Lenox: 1880, James McNeill Whistler, The Palace; white and pink [pastel] -- National Gallery of Art (Washington)
R.M.Lenox: 1880, James McNeill Whistler, The Steps [chalk and pastel] -- National Museum of Asian Art (Washington)
R.M.Lenox: 1880, Édouard Manet, Portrait of Countess Albazzi [pastel] -- Guggenheim Museum (New York)
R.M.Lenox: 1881, Edgar Degas, At the Milliner's [pastel] -- Metropolitan Museum of Art (New York)
R.M.Lenox: 1882, Edgar Degas, The Milliner [pastel] -- Metropolitan Museum of Art (New York)
R.M.Lenox: 1882, Édouard Manet, Madame Michel-Levy [pastel] -- National Gallery of Art (Washington)