Classic contrast showing the absurdity of the non-uniform playing areas.

Home runs: home/away
http://www.baseball-reference.com/players/event_hr.cgi?n1=dimagjo01&t=b

Joe DiMaggio: 148 home, 213 away; 41% at home (Yankee Stadium: 457 LC, 461 C)
1937: 19 home, 27 away: 46 homers
1948: 15 home, 24 away: 39

homers http://www.baseball-reference.com/players/event_hr.cgi?n1=snidedu01&t=b

Duke Snider: 224 home, 183 away; 55% at home; that includes 18 playing for Mets and Giants and FIVE seasons in LA. Snider's home/away splits for five consecutive 40 homer seasons in Ebbets Field Brooklyn, Duke's claim to fame:
1953: 23 home, 19 away: 42 homers
1954: 23 home, 17 away: 40 homers
1955: 23 home, 19 away: 42 homers
1956: 25 home, 18 away: 43 homers
1957: 23 home, 17 away: 40 homers
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 New York Yankee catcher Yogi Berra won three AL MVP awards: 1951, 1954, 1955. We have home/away splits for 1954 and 1955. Yankee Stadium was 344 feet from home plate in straight away right field. Berra batted left handed. Had Yogi been a righty batter like DiMaggio, he probably would not have hit so many homers. Yogi was not Ruth or Gehrig.

1954: 15 home, 7 away: 22 homers
1955: 20 home, 7 away: 27 homers Yogi twice set the AL record for homers by a catcher: 30:
1952: 18 home, 12 away
1956: 19 home, 11 away
Career 210 home, 148 away; 58.6% home in same park where DiMaggio hit only 41% of his home runs.
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Brooklyn Dodger catcher Roy Campanella won three NL MVP awards: 1951, 1953, 1955. We have home/away splits for 1953 and 1955.
1953: 22 home, 19 away; NL record for homers by a catcher: 41
1955: 21 home, 11 away: 32 homers
Career 140 home, 102 away; 57.8% home