Society of Diagnostic Medical Sonographers

Woo J : A short history of the development of ultrasound in obstetrics and gynecology. www.ob-ultrasound.net/history1.html

Baker JP : History of SDMS: Focus on the Future, 1995 Society of Diagnostic Medical Sonographers. Philadelphia, Lippincott-Raven, 1995.

Imaging timeline: greatest engineering achievements of the twentieth century. http://www.greatachievements.org

Lord Rayleigh. http://www.ob-ultrasound.net/rayleight.html

Pierre Currie. http://www.ob-ultrasound.net/curie.html

AIUM Quarterly Newsletter, June 12, 1970. http://www.aium.org/aboutAIUM/timeline/1950.asp