This primary source such as documentary pictures really reflect the period of Urbanization in America in the most realistic, and true to life way as possible.
2. Statistics
The statistics on population of major cities like New York, Philadelphia, Boston with significant changes in the Urbanization period.
3. The conducted research by Princeton University stated that “ From 1830 to 1930, the pace of urbanization substantially accelerated: the share of the population living in an urban area increased six-fold to 60 percent. After a decade of stasis, the urban share again increased rapidly from 1940 and 1970 and then more slowly from 1970 to 2010, reaching 80 percent in 2010.”
4. “ Eleven million people migrated from rural to urban areas between 1870 and 1920, and a majority of the twenty-five million immigrants who came to the United States in these same years moved into the nation’s cities. By 1920, more Americans lived in cities than in rural areas for the first time in US history.”
- Khan Academy
5. This website analyzes the benefits and disadvantages that the American Urbanization brings to the country's economy, along with the people living standards.
https://www.american-historama.org/1881-1913-maturation-era/urbanization-in-america.htm
Arrival city: The final migration and our next world
A book about how the movement of populations from rural to urban areas on the margins and how is changing the world as we live.