That's true in the National League, which was the pitcher's league. Here are the home run leaders in the American League, 1930-1939: 1930: Ruth, 49; Gehrig, 41 1931: Ruth, 46; Gehrig, 46 1932: Foxx, 58; Ruth, 41 1933: Foxx, 48; Ruth, 34 1934: Gehrig, 49; Foxx, 44 1935: Foxx, 36; Greenberg, 36 1936: Foxx, 49; Trosky, 42 1937: Dimaggio, 46; Greenberg, 40 1938: Greenberg, 58; Foxx, 50 1939: Foxx, 35; Greenberg, 33 The leaders hit about as many as they do now, but the rest of the league took another 60 years to catch up. You could say, though, that this is a very small group of exceptional hitters: just six of them. And the really remarkable thing is that four were first basemen.