» Guns And Steel    Extract of Sir Joseph Whitworth's 1873 book from chapter II, which discusses the author's involvement in rifle design.    http://www.lrml.org/historical/whitworth/gunsandsteel.htm

» Sir Joseph Whitworth    Facsimile of an article from The Manufacturer and Builder dated 1887. A tribute written shortly after his death .    http://moa.cit.cornell.edu/cgi-bin/moa/pageviewer?frames=1&coll=moa&view=50&root=%2Fmoa%2Fmanu%2Fmanu0019%2F&tif=00139.TIF&cite=http%3A%2F%2Fcdl.library.cornell.edu%2Fcgi-bin%2Fmoa%2Fmoa-cgi%3Fnotisid%3DABS1821-0019-294