“A vitamin that combat’s Lou Gehrig’s disease is disclosed in the current issue of Medical Record, a medical magazine out today.” Wilmington Morning News, November 29, 1939, p5 (Independent News Service; also appeared in other papers)
Previous earliest use (Dickson Baseball Dictionary, 3rd edition, 2009):
1ST USE. 1953. “Lou Gehrig disease study started on Guam” (Science News Letter, Sept. 19; OED).