Hills and Cattle, Mexico1890 · Graphite on off-white wove paper10.2 × 17.2 cm (4 × 6 3/4 in.)Cooper Hewitt, Smithsonian Design Museum
Mountain Range and Figures, Mexico1883 · Graphite on light green wove paper; verso: graphite10.3 × 16.8 cm (4 1/16 × 6 5/8 in.)Cooper Hewitt, Smithsonian Design Museum
The Monastery of San Pedro (Our Lady of the Snows)1879 · oil on canvasUnframed: 118.8 x 183.2 cm (46 3/4 x 72 1/8 in.)Cleveland Museum of Art
Twilight in the Hudson Valley, Hudson, New York1870 · landscapes, drawing — oil and graphite on tan paperboard26.6 × 35.8 cm (10 1/2 × 14 1/8 in.)Cooper Hewitt, Smithsonian Design Museum
Circular Pedestal in the Dionysus Theater, Athens, Greece1869 · Brush and oil paint, graphite on tan paperboard25.6 × 32.8 cm (10 1/16 × 12 15/16 in.)Cooper Hewitt, Smithsonian Design Museum
Figure and Amphora from the Museum at Athens, Greece1869 · Graphite on gray-green wove paper20.8 × 10.5 cm (8 3/16 × 4 1/8 in.)Cooper Hewitt, Smithsonian Design Museum
View of the Sea from Athens, Greece1869 · Oil paint on paperboard11.3 × 18.9 cm (4 7/16 × 7 7/16 in.)Cooper Hewitt, Smithsonian Design Museum
Broken Column of the Parthenon, Athens1869 · architecture, drawing — oil and graphite on tan paperboard28 × 38.6 cm (11 × 15 3/16 in.)Cooper Hewitt, Smithsonian Design Museum
Gulf of Corinth, Greece1869 · Graphite and white gouache on gray-green wove paper; verso: graphite12.5 × 17.4 cm (4 15/16 × 6 7/8 in.)Cooper Hewitt, Smithsonian Design Museum
Cliffs and Ridges, El Yemen Valley, Palestine1868 · Graphite on gray wove paper; verso; graphite12.2 × 20.7 cm (4 13/16 × 8 1/8 in.)Cooper Hewitt, Smithsonian Design Museum
Cabins near Belalp, Switzerland1868 · Graphite on light gray paperSheet: 11.7 x 20.5 cm (4 5/8 x 8 1/16 in.)Cooper Hewitt, Smithsonian Design Museum
Valère Basilica, Sion, Switzerland1868 · Graphite on white wove paper; verso: graphite12.8 × 8.6 cm (5 1/16 × 3 3/8 in.)Cooper Hewitt, Smithsonian Design Museum
Sketches of the House of Semon the Tanner, Jaffa, Palestine (Tel Aviv, Israel) and Fishermen on the Rocks at Beirut, Syria (Lebanon)1868 · Graphite on off-white wove paper24.9 × 17.7 cm (9 13/16 × 6 15/16 in.)Cooper Hewitt, Smithsonian Design Museum
Claude's Villa and St. Peter's, Rome, Italy1868 · Oil and graphite on tan paperboard11.4 × 22.6 cm (4 1/2 × 8 7/8 in.)Cooper Hewitt, Smithsonian Design Museum
Jungle Foliage, Jamaica1865 · Oil and graphite on bright green paperboard30.4 × 50.5 cm (11 15/16 × 19 7/8 in.)Cooper Hewitt, Smithsonian Design Museum
Thunder Clouds, Jamaica1865 · Brush and oil on paperboard18.2 × 29.4 cm (7 3/16 × 11 9/16 in.)Cooper Hewitt, Smithsonian Design Museum
Storm in the Mountains, Jamaica1865 · Brush and oil, graphite on paperboard30.5 × 50.4 cm (12 in. × 19 13/16 in.)Cooper Hewitt, Smithsonian Design Museum
Thunder Clouds, Jamaica1865 · Brush and oil on paperboard18.2 × 29.4 cm (7 3/16 × 11 9/16 in.)Cooper Hewitt, Smithsonian Design Museum
Storm in the Mountains, Jamaica1865 · Brush and oil, graphite on paperboard30.5 × 50.4 cm (12 in. × 19 13/16 in.)Cooper Hewitt, Smithsonian Design Museum
Wildflowers1865 · nature studies, drawing — oil on tan paperboard34.4 × 39.8 cm (13 9/16 × 15 11/16 in.)Cooper Hewitt, Smithsonian Design Museum
Autumn Colors, Vermont1865 · landscapes, drawing — oil and graphite on off-white paperboard11.5 × 22.6 cm (4 1/2 × 8 7/8 in.)Cooper Hewitt, Smithsonian Design Museum
Twilight in the Wilderness1860 · oil on canvasUnframed: 101.6 x 162.6 cm (40 x 64 in.); Framed: 124 x 185 x 13 cm (48 13/16 x 72 13/16 x 5 1/8 in.)Cleveland Museum of Art