In late 1908, Smithsonian leaders backed a large field expedition to gather animals, plants, and other natural history material for the Smithsonian’s expanding research collections and new museum displays. Former President Theodore Roosevelt agreed to lead the trip after leaving office, pairing celebrity public attention with a formal museum-collecting mission.
The Smithsonian–Roosevelt party departed New York by ship, beginning a year-long journey to collect scientific specimens in Africa. The core team included Theodore Roosevelt, his son Kermit Roosevelt, and Smithsonian-affiliated naturalists Edgar A. Mearns, Edmund Heller, and J. Alden Loring.
After traveling via Europe and the Suez route, the expedition reached Mombasa (in today’s Kenya). From the coast, the party moved inland using rail and organized a large safari workforce and supply system needed for months of field collecting.
The expedition quickly began fieldwork in the Kapiti Plains area, where animals could be collected for museum study and display. Team members documented where and when specimens were taken and prepared them for shipment, using preservation materials and careful recordkeeping to keep scientific value during transport.
As the route extended north and west, the party used Nairobi as a major resupply and administrative center. Specimens were packed and shipped out in batches, while the expedition prepared for longer travel toward other collecting areas in British East Africa.
By late 1909 into early 1910, the expedition’s surviving field notebooks show systematic specimen lists and repeated location entries across East and Central Africa. These records help modern researchers connect individual specimens to specific places, dates, and environmental conditions.
In early November 1909, Carl Akeley’s American Museum of Natural History expedition briefly joined Roosevelt’s party on the Uasin Gishu Plateau. This overlap shows how major museums coordinated in the same regions, sharing logistics and opportunities while collecting for different institutions.
Throughout the journey, Smithsonian naturalists focused heavily on smaller animals and detailed data—mice, bats, birds, insects, and other specimens that required meticulous preparation and notes. This broadened the expedition’s long-term scientific value beyond high-profile trophy animals.
After working through parts of East and Central Africa, the expedition followed a route that ultimately went north along the Nile toward Khartoum. The changing landscapes and waterways shaped what could be collected and how specimens could be transported.
The expedition ended at Khartoum, marking the conclusion of the main field-collecting phase. From this point, the work shifted from hunting and collecting to shipping, curating, and scientifically organizing the material gathered over many months.
In Washington, the Smithsonian’s new Natural History Building (now the National Museum of Natural History) opened to the public in March 1910. The timing mattered: large collecting efforts like the Roosevelt expedition fed the expanding need for research space and public exhibits.
Smithsonian summaries report that the expedition enriched national collections with roughly 11,400 animal items, including large and small mammal skins, and thousands of plant specimens. Some material supported exhibits in the museum’s new building, while other specimens became long-term research resources.
Smithsonian–Roosevelt African Expedition (1909–1910)