Description: An isothermal chart of the United States for July. Place Names: ISO Topic Categories: boundaries, climatologyMeteorologyAtmosphere, location, oceans, inlandWaters Keywords: Isothermal chart of the US for July, physical, meteorological, political, physical features, major political subdivisions, country borders, temperature, boundaries, climatologyMeteorologyAtmosphere, location, oceans, inlandWaters, Unknown, Source: Ralph S. Tarr, B.S., F.G.S.A. and Frank M. McMurry, Ph.D., New Geographies 2nd ed (New York, NY: The Macmillan Company, 1910) 224 Map Credit: Courtesy The Private Collection of Roy Winkelman |
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