Edward Hopper, page 1 from Artist’s ledger—Book III, 1924–67. Ink, graphite, and colored pencil on paper, 12 3/16 × 7 5/8 in. (31 × 19.4 cm). Whitney Museum of American Art, New York; gift of Lloyd Goodrich 96.210a-hhhh || Click picture to see more of this sketchbook via the Whitney site.
Untitled (Sheet of Studies), Jackson Pollock (American, Cody, Wyoming 1912–1956 East Hampton, New York). Ink, gouache, watercolor, colored pencils and graphite pencil on paper. @ Metropolitan Museum of Art