Baseball Databank is a compilation of historical baseball data in a convenient, tidy format, distributed under Open Data terms. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/ Person identification and demographics data are provided by Chadwick Baseball Bureau (http://www.chadwick-bureau.com), from its Register of baseball personnel. Player performance data for 1871 through 2014 is based on the Lahman Baseball Database, version 2015-01-24, which is Copyright (C) 1996-2015 by Sean Lahman. The tables Parks.csv and HomeGames.csv are based on the game logs and park code table published by Retrosheet. This information is available free of charge from and is copyrighted by Retrosheet. Interested parties may contact Retrosheet at http://www.retrosheet.org.