"Walter Freeman performed about 3,500 lobotomies in 23 states during his career of which 2,500 were his ice-pick procedure." http://listverse.com/2009/06/24/top-10-fascinating-and-notable-lobotomies/ "Freeman's ice-pick lobotomy became wildly popular. ... The U.S. performed more lobotomies than any other country." http://psychcentral.com/blog/archives/2011/03/21/the-surprising-history-of-the-lobotomy/ www.peoplewho.org