University of Oxford (UK)
Pitt Rivers Museum: Robert Hottot's Expedition to Central Africa, 1908 09
An online exhibition which documents a scientific expedition up the Congo river in the early 1900s. You can view the complete photos, documents, and equipment by clicking on the left side navigation bar.
University of Pennsylvania
University of Pennsylvania: Missionary Travels and Researches in South Africa
Copies of the work by David Livingstone that can be downloaded at this site from the University of Pennsylvania. No additional information is given. Both text and zip files are available.