Lyman, H. M. (1881). "History of anaesthesia". Artificial anaesthesia and anaesthetics. New York: William Wood and Company. p. 6. Retrieved 2010-09-13.
"Vacuum & Sewing Hall of Fame". Archived from the original on 12 December 2007. Retrieved 2007-12-29. See section: "Contributors to the invention of the sewing machine".
vernacularphotography.com
Rosenthal, Richard T. (2000). "The Cyanotype". Vernacular Photography. Archived from the original on 2013-03-30. Retrieved 2021-11-23.
"Vacuum & Sewing Hall of Fame". Archived from the original on 12 December 2007. Retrieved 2007-12-29. See section: "Contributors to the invention of the sewing machine".
Rosenthal, Richard T. (2000). "The Cyanotype". Vernacular Photography. Archived from the original on 2013-03-30. Retrieved 2021-11-23.