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Thematic maps showing various aspects of the United States population as ofthe census of 1850. Published in Petermann's Geographische. Of particularinterest is the Plate 11, showing relative density of slaves as of 1850 as thisperhaps served to inspire Edwin Hergesheimer of the Coast Survey to produce theslavery map of 1861 (based on 1860 Census) which is shown in image cgs05194.