Wikipedia frequently includes--either as structured text or in the first few paragraphs--the establishment date for a city. This would be useful for thematic mapping. If you make a map of Georgia in 1836, you would like to use some of the 1840 cities; but others may not be established until the end of the decade.
This is especially important when trying to compare city locations against other variables--e.g., railroads or Indian land cessions.
Wikipedia frequently includes--either as structured text or in the first few paragraphs--the establishment date for a city. This would be useful for thematic mapping. If you make a map of Georgia in 1836, you would like to use some of the 1840 cities; but others may not be established until the end of the decade.
This is especially important when trying to compare city locations against other variables--e.g., railroads or Indian land cessions.