Robert L. Chapman has spent much of his professional career editing numerous reference texts, including thesauruses and dictionaries. An ardent collector of slang as well as other words, Chapman was the revising editor of the fourth edition of Roget's International Thesaurus and the supervising editor of the Funk & Wagnalls Standard College Dictionary. Chapman, a retired Professor of English from Drew University, has also edited Roget A to Z, The Dictionary of American Slang, Concise Roget's International Thesaurus, and the Thesaurus of American Slang.