Alfred Aloysius "Trader" Horn (born Alfred Aloysius Smith; 1861-1931) was an ivory trader in central Africa. He wrote a book, Trader Horn: A Young Man's Astounding Adventures in 19th-Century Equatorial Africa (ISBN 1-885211-81-3), detailing his journeys into jungles teeming with buffalo, gorillas, man-eating leopards, serpents and "savages". The book also documents his efforts to free slaves, meet the founder of Rhodesia, Cecil Rhodes, and liberate a princess from captivity.
Horn, Trader. Trader Horn; being the life and works of Alfred Aloysius Horn, an "Old Visiter" ... the works written by himself at the age of seventy-three and the life, with such of his philosophy as is the gift of age and experience, taken down and here edited by Ethelreda Lewis; with a foreword by John Galsworthy. New York: Literary Guild of America, 1927, 302pp.