The minor league statistics project has published statistics for 5 additional league-seasons, bringing the overall total to date to 288 leagues.  The new entries are:

• 1950 International League
• 1996 Northwest League
• 1999 California League
• 2000 California League
• 2001 California League

The updated statistics are available via the SABR Encyclopedia, and will post to baseball-reference.com within the coming days.

Cliff Blau, Art Cantu, and Bob Kistler deserve thanks for bringing these data to the web.