John L. Allen is a former chairman of the Department of Geography and emeritus professor of geography at the University of Wyoming in Laramie. His publications, numbering more than thirty titles to date, reflect his broadly varied interests, including the exploration of the American West, human impacts on natural environments and related landscape changes, and images of the West. Among students of the Lewis and Clark expedition, Professor Allen's best-known work is Lewis and Clark and the Image of the American Northwest (reprint, New York: Dover, 1975). Originally published under the title Passage through the Garden: Lewis and Clark and the Image of the American Northwest, it remains among the most authoritative and frequently-referenced works in the literature.
Other major works of authored or edited by Professor Allen include Explorers from Ancient Times to the Space Age (New York: Macmillan, 1999); Student Atlas of World Geography (4th ed., New York: McGraw-Hill, 2004); A Continent Comprehended (Lincoln: University of Nebraska Press, 1997); Jedidiah Smith and the Mountain Men of the American West (New York: Chelsea House, 1991); Student Atlas of Environmental Issues (New York: McGraw-Hill, 1997); Student Atlas of Anthropology (New York: McGraw-Hill, 2004); and the three-volume North American Exploration (University of Nebraska Press, 1997).