Some historical data, based on U.S. Census Bureau information:
Population of the 100 Largest Urban Places: 1920
http://www.census.gov/population/documen tation/twps0027/tab15.txt
http://www.census.gov/population/documen
Population of the 100 Largest Urban Places: 1930
http://www.census.gov/population/documen tation/twps0027/tab16.txt
http://www.census.gov/population/documen
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