Sheldon, Rose Mary. "The Friedman Collection: An Analytical Guide, Item 265" (PDF). George C. Marshall Foundation. Archived from the original (PDF) on 2024-01-03. Retrieved August 7, 2015. William F. Friedman library collection Item 265 Wouves, P.R., A Syllabical and Steganographical Table, Philadelphia: Printed by Benjamin Franklin Bache, 1797. Photostat negative. According to William F. Friedman, an item of very great historical interest and importance. An explanatory note accompanies the item written by the book dealer i Philadelphia from whom Friedman purchased this copy. See Galland, p. 205 for explanatory details. In French and English, 1786-98: ―By means of which any sort of writings taken from either the French, English, Dutch, Spanish, Portuguese or Italian languages or any languages which use the same alphabet can be converted into numerical figures. According to the extract from a letter from W.D. Witt, Book Dealer on Carlisle Street, Philadelphia, the Library of Congress does NOT have a copy of this. The New York Public Library has a copy signed by Wouves and the Philadelphia Historical Society has an unsigned copy. De Witt thought Wouves was a pseudonym for Benjamin Franklin. The publisher, Benjamin Franklin Bach was his grandson. We know Franklin made use of ciphers. P.R.=Poor Richard? https://web.archive.org/web/20240103092657/https://files.4in1.ws/Rose%20Mary%20Sheldon%20-%20The%20Friedman%20Collection%20Guide.pdf