Title: Drawings/prints associated with USPRR reports & photographs/archival material
Subjects: Plants, United States Pacific Railroad Expeditions and Surveys, Scientific expeditions, Discovery and exploration, Explorers, Pictorial works, Botanical illustration
Places: West (U.S.)
People: John Torrey (1796-1873), Arthur Schott (1814-1875), Isaac Sprague (1811-1895)
Time periods: 19th century