Samuel Teleki led an expedition to East Africa, 1886-1889, during which he discovered Lakes Rudolf and Stephanie in Kenya and Ethiopia. He also led a second tour of East Africa, 1893. The papers include two diaries of Teleki's East African expeditions of 1886-89, photographs, and microcopies from the Vienna Staatsarchiv of Teleki's letters and reports from Africa about the expedition of 1886-1889, sent to Crown Prince Rudolf. The diary is in Hungarian, German, and Swahili, and a full English-language translation was created by Teleki's nephew, Charles Teleki, his wife, Vera, and great-nephew, Geza (copyright 1965) of the entire diary is part of the collection. This collection contains the original manuscript diary, typescript translation, manuscript completions and corrections, and autography of Count Charles Teleki. Photographic copies of two letters in Hungarian from Count Samuel Teleki to Crown Prince Rudolf laid in.