REFERENCES
- The Annotated Sherlock Holmes, The Four Novels and The Fifty-Six Short Stories Complete, by Sir Arthur Conan Doyle, Edited by William S. Baring-Gould, publisher, Clarkson N. Potter, Inc., New York, NY., 1947.
- The Sherlock Holmes Companion, by Michael and Mollie Hardwick, publisher, Bramhall House, New York, NY, 1962.
- The Encyclopedia Sherlockiana, or A Universal Dictionary of the State of the Knowledge of Sherlock Holmes, and his biographer John H. Watson, M.D., compiled and edited by Jack Tracy, publisher, Avon Books, New York, NY., 1979.
- Sherlock Holmes in London, A Photographic Record of Conan Doyle's Stories, by Charles Viney, publisher, Phoebe Phillips Editions, Boston, MA., 1989.
- The Classic Illustrated Sherlock Holmes, by Sir Arthur Conan Doyle, featuring the original artwork by Sidney Paget, Longmeadow Press, Secaucus, CT., 1987.
- The Private Life of Sherlock Holmes, by Vincent Starrett, The Macmillan Company, NY., 1933.