Kendall, Edward C. (Edward Calvin), b. 1886

Rochester, MN

April 10 1922

2 leaves ; 28 x 21 cm.

Typescript letter written on The Mayo Foundation letterhead and signed by E. C. Kendall. Letter explains how Kendall and the Mayo Clinic patented thyroxin, the active principle of the thyroid gland. Lists the advantages a patent provides. Gives brief history of the patenting of medications in which R. Brailsford Robertson (of Australia) is mentioned.

insulin:L10262

University of Toronto Archives. A1982-0001, Box 2, Folder 5
Title based on content of letter.
Edward C. Kendall isolated thyroxin, the active principle of the thyroid gland in 1914 while at the Mayo Clinic. In 1950 he shared the Nobel Prize in Physiology and Medicine with Tadeus Reichstein and Philip Showalter Hench for 'for their discoveries relating to the hormones of the adrenal cortex, their structure and biological effects.'

Mayo Foundation for Medical Education and Research
Insulin - Patents
Thyroxine