Through the years, players flashed the least power during the 1920s, '30s, and '70s, a fact that lifts the relative slugging feats of Ruth, Lou Gehrig, Jimmy Foxx and Mel Ott (all of whom played in the '20s and '30s), along with those of Mike Schmidt, Willie Stargell and Dave Kingman ('70s and '80s).
FORBES: Magazine Article