Compton, Dorothy G. "Buttonhole Scissors." U. S. Patent number: 5499454. Washington, DC: United States Patent and Trademark Office, 1996. http://www.uspto.gov/patft/index.html (9 July 2007).

Compton, Dorothy G. "Buttonhole Scissors." U. S. Patent number: 5499454. Washington, DC: United States Patent and Trademark Office, 1996. http://www.uspto.gov/patft/index.html (9 July 2007).