You recognize, of course, Ernie Banks. He played first base for the Cubs from 1962-71, after nearly a decade at shortstop, 1,259 games at first in all.
The information that accompanies this Getty Images photo says:
Ernie Banks #14 of the Chicago Cubs sets to take the throw over at first base as Bob Johnson #6 of the Cincinnati Reds attempts to get back safe during an Major League Baseball game circa 1971 at Wrigley Field in Chicago, Illinois
Well... okay. There were two players named Bob Johnson who played in the National League in that era.