| | Description: A map from 1888 of the United States showing the relative frequency of tornadoes, and is color–coded to show frequency ranging from 1 or more to 50 or more tornadoes per year. Place Names: Meteorology, tornad
 ISO Topic Categories: climatologyMeteorologyAtmosphere, 
oceans, 
location, 
inlandWaters
 Keywords: Relative Tornado Frequency in the United States, physical, meteorological, kClimate, physical features, climate, climatologyMeteorologyAtmosphere, 
oceans, 
location, 
inlandWaters, Unknown, 1888
 Source: Russell Hinman, Eclectic Physical Geography (Cincinnati, OH: Houghton Mifflin Company, 1888) 98
 Map Credit: Courtesy the private collection of Roy Winkelman
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