Book excerpt: A reference guide to the great American author (1835-1910) for students and general readers. The approximately 740 entries, arranged alphabetically, are essentially a collection of articles, ranging significantly in length and covering a variety of topics pertaining to Twain's life, intellectual milieu, literary career, and achievements. Because so much of Twain's writing reflects Samuel Clemens's personal experience, particular attention is given to the interface between art and life, i.e., between imaginative reconstructions and their factual sources of inspiration. Each entry is accompanied by a selective bibliography to guide readers to sources of additional information. Annotation copyright by Book News, Inc., Portland, OR