State Library of North Carolina
N Cpedia: Windmills
Windmills were so common along the North Carolina coast at the time of the Civil War that Charles F. Johnson, a Union soldier stationed on Hatteras Island, later wrote that there were "a greater number than I supposed were in existence...
Texas State Historical Association
Texas State Historical Association: Business and Transportation
Looks at the many features of the Texas economy that make it one of the healthiest in the country, including, the financial sector, the oil industry, electricity, telecommunications, transportation, and various natural resources.
Curated OER
Educational Technology Clearinghouse: Maps Etc: North China, 1971
" North China includes the densely populated and intensively cultivated North China Plain, the loess-covered uplands of Shansi, northern Shensi, and eastern Kansu, and the sparsely populated, semiarid steppes of Inner Mongolia....