Mountain of the Holy Cross, Colorado

Grand Canyon in Stormy Weather, Arizona

1908 · Brush and black wash, blue, brown and pink watercolor, white gouache on paper, laid down on paperboard

Two Cliffs in Grand Canyon, Arizona

1908 · Pen and brown ink on white wove paper, laid down at corners

Grand Canyon in the Rain

1908 · Pen and brown ink on white wove paper

Vernal Falls, Yosemite

1904 · Brush and gray wash, white goauche, graphite on gray wove paper

The South Dome, Yosemite

1904 · Brush and white gouache, graphite on blue paper

Baking Pottery at Laguna, New Mexico

1901 · Brush and gray wash, graphite on cream-colored wove paper