Valley of the Catawissa in Autumn (1862)

Venice; Grand Canal at Sunset (1906)

Great Falls of Snake River, Idaho Territory (1876)

Head of Yellowstone River (1875)

Hot Springs of Gardiner’s River, Yellowstone (1875)

Lower Yellowstone Range (1875)

Summit of the Sierras, Nevada (1875)

The Castle Geyser, Upper Geyser Basin, Yellowstone National Park (1874)

The Grand Canyon, Yellowstone (1875)

The Great Blue Spring of the Lower Geyser Basin, Yellowstone (1875)

The Great Salt Lake of Utah (1875)

The Mountain of the Holy Cross, Colorado (1875)

The Musquito Trail, Rocky Mountains of Colorado. Elevation 12,000 Feet (1875)

The Towers of Tower Falls, Yellowstone (1875)

Tower Falls and Sulphur Mountain, Yellowstone (1875)

Valley of the Babbling Waters, Southern Utah (1876_1875)

Yellowstone Lake (1875)

Autumn Afternoon, the Wissahickon (1864)

Bringing Home the Cattle – Coast of Florida (1879)

Pueblo at Sunset (1901)

Golden Gate, Yellowstone National Park (1893)

Great Blue Spring of the Lower Geyser Basin, Firehole River, Yellowstone (1872)

Zoroaster Peak (1918)

A Passing Shower in the Yellowstone Cañon (1903)

A Side Canyon, Grand Canyon of Arizona (1915)

Entrance to the Grand Canal, Venice (1906)

Grand Canyon, Colorado River (1915)

The Castle Rock, Green River, Wyoming (1913)

The Southern Arm of the Yellowstone Lake, Yellowstone National Park, Wyoming Territory (1874)

The Transept (1882)