Risdon, Orange, 1786-1876Longitude west from Washington. Townships and range lines for surveyed areas indicated. "Engraved by Rawdon, Clark & Co., Albany." "Copy Right Secured." 1 map: col., mounted on paper; 103 x 66 cm.JPEG43a82a94-0be8-4541-bae8-7852b6c4bcaaengPublicMap of the surveyed part of the territory of Michigan by O. Risdon.MapsMichigan1825University of Michigan