9 books
The Gliddon Mummy-Case in the Museum of the Smithsonian Institution (Classic Reprint)
The Races of Man, and Their Geographical Distribution (Classic Reprint)
The Geographical Distribution of Animals and Plants, Vol. 15 (Classic Reprint)
The Geographical Distribution of Animals and Plants, Part 1
The Geographical Distribution of Animals and Plants
The Geographical Distribution of Animals and Plants (Volume 1)
The Races of Man, and Their Geographical Distribution
The Races of Man
The Races of Man (1863)