William Henry Holmes (1846-1933) was a man of varied interests and worked a fascinating path across disciplines. He was an anthropologist, archaeologist, artist, and geologist. His journey at the Smithsonian began when he became acquainted with Fielding Meek, Smithsonian Institution's first full-time paleontologist. Holmes began sketching natural history specimens for Meek and other staff. Holmes went on to work as a geologist with Ferdinand V. Hayden who directed geological surveys of the Western United States. The sketch below documents a rabbit Holmes observed in Yellowstone.
William Henry Holmes compiled 20 volumes with original correspondence, documents, ephemera, watercolors, drawings, and photographs to document his life and work. These volumes cover his journey as a illustrator and geologist, as well as his time with the American Bureau of Ethnology, department of Anthropology at Smithsonian Institution, and finally the National Gallery of Art. The first several volumes cover his work in the field as a geologist and artist, and were cataloged as part of the Field Book Project.
To learn more, check out the Smithsonian Libraries blog post about his life. Also you can see his publications in Biodiversity Heritage Library and his personal papers at Smithsonian Institution Archives.