“The Solar System.” Chicago: Geo. F. Cram, 1883. 11 1/4 x 8 5/8. Cerograph. Very good condition.
A detailed celestial map comparing the size of the planets and their respective orbits issued by the George Cram Company, an engraving and publishing firm from Chicago. In the mid-nineteenth century, the center of cartographic publishing was New York City, but in the 1880’s this began to shift towards Chicago with the advent of the Rand, McNally and Cram firms. These firms were noted for their efficient output of precise maps filled with useful and up-to-date political and cultural information, and details on roads, towns, railroads, and so forth. This map is typical of the Cram output and of celestial maps of the time.