Curated OER
Etc: Maps Etc: United States Forest Regions, 1901
A map from 1901 of the United States showing the forest regions, coded to show heavily forested and moderately forested areas. Areas of typical forest types are shown, including pine and hardwoods, spruce, birch, and maple in the...
Curated OER
Educational Technology Clearinghouse: Maps Etc: Northeast China, 1971
"Northeast China - the provinces of Heilungkiang, Kirin, and Liaoning - is the most important region of the country and a nationally significant and still-developing center of agricultural production. Most of the Northeast remained...