United States. General Land Office. CREATED/PUBLISHED Phila[delphia],  SUMMARY Outline map showing major drainage, cities and towns, railroads, and the 6-mile and 15-mile limits of the land grant. NOTES Scale ca. 1:200,000. 'The whole central region of this state is underlaid with iron ore, in vast beds. There are also coal measures of great thickness and extent. Lead ore is also found.' Signed: Jos. S. Wilson, Commissioner.