The collection contains 123 numbered and 1 unnumbered black and white drawings (on illustration board 23 x 17 to 25 x 20 cm.)
by Mary V. Hood of wildflowers in Yosemite National Park, California. Illustrations were published at least twice: (1) Beatty,
M.E. et al. "101 wildflowers of Yosemite," in: Yosemite nature notes. Yosemite: Yosemite Natural History Association Press,
v. 17, no. 6, pp. 75-112, June, 1938 (101 illustrations); and (2) Hood, Mary and A. William Hood. Yosemite wildflowers and
their stories: histories, illustrations, locations. Yosemite: Flying Spur Press, 1969 (125 illustrations).