| | Description: A base map from 1921 showing the general areas of highlands and lowlands of the United States. Place Names: A Complete Map of the United States, Bahamas, Canada, Cuba, Mexico, United State
 ISO Topic Categories: oceans, 
inlandWaters, 
location
 Keywords: Highlands and Lowlands of the United States, physical, topographical, topographical, oceans, 
inlandWaters, 
location, Unknown, 1921
 Source: Jacques W. Redway and Russell Hinman, Natural Elementary Geography (New York, NY: American Book Company , 1921) 35
 Map Credit: Courtesy the private collection of Roy Winkelman
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