Washington and Greenwich prime meridians. "Entered according to Act of Congress in the year 1872 by Asher and Adams' in the office of the Librarian of congress." Shows parts of Minn. and Iowa and small parts of Mich. Shows railroad routes, cities and towns, water features, and political boundaries. Plate no. 71-72 in Asher and Adams' New Columbian railroad and pictorial album of American industry. 1 map : col. ; 55 x 40 cm This map is in the public domain. Please attribute access and use of this digitized map to the Stephen S. Clark Library, University of Michigan Library.