Curated OER
Etc: Maps Etc: The United States Population and Railroad Network, 1901
A map from 1901 of the United States showing population density, railroad lines, state capitals, and census centers of population at the time. The red figures indicate the mean population density per square mile for each state according...
Curated OER
Educational Technology Clearinghouse: Maps Etc: Population Density, 1910
A map of the United States showing the distribution of the population in 1910. The map is keyed to show areas of population with densities ranging from under 2 inhabitants per square mile to 90 and over inhabitants per square mile. The...