Notes

Selected Works of Leonardo da Vinci

A1. Leonardo Da Vinci, Codex Madrid I (Switzerland: McGraw-Hill, 1974). Available online at http://historical.library.cornell.edu/kmoddl/toc_leonardo1.html (Cornell Digital Library, accessed 2004 Sept 8). From Michael King, 2004 Sep 9.

1. Kaplan, Erez, "The Controversial Replica of Leonardo's Adding Machine," http://www.webcom.com/calc/leonardo/leonardo.html (Calculating Machines, accessed 2004 Sept 5). From Michael King, 2004 Sep 9.