Harry Truman actually said...
I also invite the medical profession, the press, the radio, the motion-picture industry, and all organizations and individuals interested in a national program for the control of cancer by education and other cooperative means to unite during the month of April in a concerted effort to impress upon the people of the Nation the vital importance to their health and to the welfare of the Nation of a program for the control of cancer and the necessity for their cooperation in such a program.
03/24/1948