Industrial Sections, 1898
A map of the Industrial Sections of the contiguous 48 states as of 1898 AD. "Owing largely to differences in surface structure, climate, and soil, the great productions of our country are confined more or less definitely to different regions. Hence the United States may be naturally separated in to (1) the Northeastern, or cloth-manufacturing section; (2) the Northern, or food-,iron-, and coal-producing section; (3) the Southern, or cotton-producing section; (4) the Plateau, or grazing and gold- and silver-mining section; and (5) the Pacific, or Western food- and gold-producing section." &mdashRedway, 1898.

Iron and Steel Manufacture, 1899
Map of Iron and Steel Manufacture in the United States. Coded to show amounts of iron and steel manufactured in tons. 

Manufacturing Areas, 1900
A map of the United States in 1900, showing manufacturing areas.

Manufacturing Districts in the United States, 1910
A map showing the leading manufacturing districts in the United States.

The United States - Industrial Sections,
Map of United States showing the industrial sections.

United States Economic Regions, 1900
Map of the United States, subtitled "Economic Regions." Map is color-coded to show products produced in various areas of U.S.

United States Industrial Sections, 1901
Map of the United States separated into "(1) the Northeastern, or cloth-manufacturing section; (2) the Northern, or food-, iron-, and coal-producing, and manufacturing section; (4) the Plateau, or grazing and gold- and silver-mining section; and (5) the Pacific, or Western food- and gold-producing section."—Natural Advanced Geography, 1901

United States Showing Products and Chief Industries, 1921
This is a map of the agricultural regions of the United States. "The words in large type indicate the chief crop or industry in each region. Those in smaller type indicate other products and industries. The great agricultural regions are the prairies of the Mississippi Basin, east of the 100th meridian; the land bordering on the Gulf of Mexico, and the valleys of the Pacific slope. The Appalachian region is not so fertile as the others. The arid region, including the states within the Rocky Mountain plateau and the southern part of California, embraces nearly one third of the country." — Foster, 1921

Value of Manufactures, 1860
A map showing the value of manufactures (in millions) and distribution of staple agricultural products in the United States, in 1860.