Albert Pujols hit his 20th home run on May 19th, 2006, in the Cardinals 42nd game of the year. That was the fastest ever to 20 home runs.
Barry Bonds was the fastest, hitting his 30th home run on June 4, 2001. He also was the fastest to 40, 50, 60 and 70 home runs in a season.
Multiply by 100 and subtract once.
John Kruk hit 100 career home runs in 10 Major League seasons.
Harry Stovey reached 100 career home runs in 1890 http://en.wikipedia.org/wiki/List_of_lifetime_home_run_leaders_through_history
Mike Cameron is one of them
Mel Ott had 115 home runs and Ed Mathews had 112.