Washington and Greenwich prime meridians. Plates 142 and 143 from "Atlas of the world". "Rand McNally & Co.'s Business Atlas Map of Michigan." Insets: Northern portion of Michigan [ca. 1:2,000,000], Isle Royale. On verso: Wisconsin and Indiana, plates 141 and 144. 1 map on 2 sheets: col.; 48 x 30 cm., sheets 28 x 35 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.