Antique map of the Lower Peninsula of Michigan.
Montmorency and Ogemaw Counties, organized in 1881 and 1875 respectively, are titled in a striped typeface.
O. W. Gray was a publishing firm based in Philadelphia. Later, they published as O. W. Gray & Son. They published atlases in the late nineteenth century. Gray's National Atlas was one of the most successful commercial ventures of the 1870s and one of the last to employ hand coloring on maps.