This collection contains lantern slides published by the London Missionary Society regarding David Livingstone, the noted explorer and medical missionary who traveled to Africa in the 19th century. The lantern slides in this collection depict Livingstone’s life in color illustrations, and are accompanied by a pamphlet that provides descriptions of the slides. The collection also includes a handwritten piece on David Livingstone by an unknown author.

The collection contains photographs, notes, articles, and other materials from explorer Edna R. Webster and her daughter Marjorie Webster. The majority of materials in the collection relate to Edna's exploration and study of Mayan ruins on the Yucatán Peninsula in Mexico, and Marjorie's interest in Atlantis and its possible connection to Mexico.