100 Largest Urban Places in the 1920s and 1930s

Some historical data, based on U.S. Census Bureau information:

Population of the 100 Largest Urban Places:  1920
http://www.census.gov/population/documentation/twps0027/tab15.txt

Population of the 100 Largest Urban Places:  1930
http://www.census.gov/population/documentation/twps0027/tab16.txt