The fields are:
Current franchise ID
Franchise ID (may the same as current one) for earlier data
League
Division (blank before divisional play)
Location name (e.g. Brooklyn, Texas)
Nickname
Alternate nicknames (blank if none for the period)
Date of the first game with this combination
Date of the last game with combination (blank if current one)
City
State
The league codes are:
NA = National Association
NL = National League
AA = American Association
AL = American League
Posting history:
4/27/2010: First release
5/2/2010: Added A's (Athletics alternate), modified Pittsburgh in 1880s, 1890s)
5/3/2010: A few modifications to data for 1961-2009
The Franchise Directory contains teams' annual won-lost records, standings, managers, and other data: Franchise Directory
Page Updated: 12/20/2015
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