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1. Coal map of Illinois and Indiana

Maps University Of Minnesota Public content
1903. Bement, A. (Alburto), 1862-. January 1903.; "The area of the coal measures are shown by the yellow tint. The various numbers printed in red show the mining operations, and are ... Peabody Coal Co (Chicago), 1903.
1838. Ensign, T., active 1838-1840, publisher, Hammond, John T., approximately 1820-, and Phelps, Humphrey,active 19th century,publisher. Counties shown in colors. Prime meridian : [Washington]. 'Entered according to act of Congress in the year 1836 by Humphrey Phelps & Bela S. Squire... Humphrey Phelps & T. Ensign,.