Curated OER
Educational Technology Clearinghouse: Maps Etc: Manufacturing Areas, 1900
A map from 1907 of the United States showing the principal manufacturing areas in 1900. The star symbol in Ohio represents the mean center of manufacturing in the nation. Each symbol represents gross $25,000,000 or fraction more than...
Curated OER
Educational Technology Clearinghouse: Maps Etc: Manufacturing Areas , 1900
A map from 1920 of the United States showing the principal manufacturing areas in 1900. The star symbol in Ohio represents the mean center of manufacturing in the nation. Each symbol represents gross $25,000,000 or fraction more than...