40-40 Club (1973)

“Bonds got his 40th stolen base against San Diego Thursday night and needs just a pair of home runs to be the first person in the 40-40 club (stolen bases and homers).” Associated Press, “Pirates Drop Cardinals Into 3rd Place,” Morning Call (Allentown, PA), September 15, 1973, p13 (Also appeared in other papers on same date)
NOTE: Bobby Bonds would fall one homer short that season of being the first to reach those numbers.

No earliest use given in 2009 Dickson Baseball Dictionary