would like to know which players led their team in both career home
runs and career batting average. I believe there are 5, but not sure. 
I know Babe Ruth and Ted Williams are two of them.

Hello.

I combed through the historical statistics at Major League Baseball's
official site [ http://www.mlb.com ].  Through the 2003 season, there
were indeed five players who were the team career leaders in both home
runs and batting average.

Ted Williams
Red Sox home run leader: 521
http://boston.redsox.mlb.com/NASApp/mlb/bos/stats_historical/bos_historical_player_stats.jsp?sortByStat=HR&statType=1&baseballScope=BOS&teamPosCode=all&subScope=pos&timeFrame=3&timeSubFrame2=0&Submit=Submit
Red Sox batting average leader: .344
http://montreal.expos.mlb.com/NASApp/mlb/mon/stats_historical/mon_historical_player_stats.jsp?sortByStat=HR&statType=1&baseballScope=MON&teamPosCode=all&subScope=pos&timeFrame=3&timeSubFrame2=0&Submit=Submit

Babe Ruth
Yankees home run leader: 659
http://newyork.yankees.mlb.com/NASApp/mlb/nyy/stats_historical/nyy_historical_player_stats.jsp?sortByStat=HR&statType=1&baseballScope=BLA&teamPosCode=all&subScope=pos&timeFrame=3&timeSubFrame2=0&Submit=Submit
Yankees batting average leader: .349
http://newyork.yankees.mlb.com/NASApp/mlb/nyy/stats_historical/nyy_historical_player_stats.jsp?sortByStat=AVG&statType=1&baseballScope=BLA&teamPosCode=all&subScope=pos&timeFrame=3&timeSubFrame2=0&Submit=Submit

Jeff Bagwell
Astros home run leader: 419
http://houston.astros.mlb.com/NASApp/mlb/hou/stats_historical/hou_historical_player_stats.jsp?sortByStat=HR&statType=1&baseballScope=HOU&teamPosCode=all&subScope=pos&timeFrame=3&timeSubFrame2=0&Submit=Submit
Astros batting average leader: .300
http://houston.astros.mlb.com/NASApp/mlb/hou/stats_historical/hou_historical_player_stats.jsp?sortByStat=AVG&statType=1&baseballScope=HOU&teamPosCode=all&subScope=pos&timeFrame=3&timeSubFrame2=0&Submit=Submit

Fred McGriff
Devil Rays home run leader: 97
http://tampabay.devilrays.mlb.com/NASApp/mlb/tb/stats_historical/tb_historical_player_stats.jsp?sortByStat=HR&statType=1&baseballScope=TBA&teamPosCode=all&subScope=pos&timeFrame=3&timeSubFrame2=0&Submit=Submit
Devil Rays batting average leader: .295
http://tampabay.devilrays.mlb.com/NASApp/mlb/tb/stats_historical/tb_historical_player_stats.jsp?sortByStat=AVG&statType=1&baseballScope=TBA&teamPosCode=all&subScope=pos&timeFrame=3&timeSubFrame2=0&Submit=Submit

Vladimer Guerrero
Expos home run leader: 234
http://montreal.expos.mlb.com/NASApp/mlb/mon/stats_historical/mon_historical_player_stats.jsp?sortByStat=HR&statType=1&baseballScope=MON&teamPosCode=all&subScope=pos&timeFrame=3&timeSubFrame2=0&Submit=Submit
Expos batting average leader: .323
http://montreal.expos.mlb.com/NASApp/mlb/mon/stats_historical/mon_historical_player_stats.jsp?sortByStat=AVG&statType=1&baseballScope=MON&teamPosCode=all&subScope=pos&timeFrame=3&timeSubFrame2=0&Submit=Submit

------------

For next season, you might keep an eye on Luis Gonzalez and Larry
Walker, both of whom are very close to being all-time team leaders in
the batting average and home runs.

Luis Gonzalez is the Diamondbacks' leader in home runs and a close
second in batting average.
D'backs home runs:
http://arizona.diamondbacks.mlb.com/NASApp/mlb/ari/stats_historical/ari_historical_player_stats.jsp?sortByStat=HR&statType=1&baseballScope=ARI&teamPosCode=all&subScope=pos&timeFrame=3&timeSubFrame2=0&Submit=Submit
D'backs batting average:
http://arizona.diamondbacks.mlb.com/NASApp/mlb/ari/stats_historical/ari_historical_player_stats.jsp?sortByStat=AVG&statType=1&baseballScope=ARI&teamPosCode=all&subScope=pos&timeFrame=3&timeSubFrame2=0&Submit=Submit

Likewise, Larry Walker is the Rockies' leader in home runs and a close
second in batting average.
Rockies home runs:
http://colorado.rockies.mlb.com/NASApp/mlb/col/stats_historical/col_historical_player_stats.jsp?statType=1&baseballScope=COL&teamPosCode=all&subScope=pos&timeFrame=3&timeSubFrame2=0&Submit=Submit&timeSubFrame=0&&sortByStat=HR
Rockies batting average:
http://colorado.rockies.mlb.com/NASApp/mlb/col/stats_historical/col_historical_player_stats.jsp?sortByStat=AVG&statType=1&baseballScope=COL&teamPosCode=all&subScope=pos&timeFrame=3&timeSubFrame2=0&Submit=Submit


search strategy:
browsed data for every team at mlb.com

I hope this helps.

very nice work.  I thought that larry walker might be up there also.  Thanks again.

Thank you for the tip.
-juggler