Rhenish-Westphalian Coal District from Duisburg to Dortmund 1910

Historical
North Rhine-Westphalia
"Northern Germany as far as the Bavarian and Austrian Frontiers; Handbook for Travellers" by Karl Baedeker. Fifteenth Revised Edition. Leipzig, Karl Baedeker; New York, Charles Scribner's Sons 1910

Rhenish-Westphalian Coal District from Duisburg to Dortmund 1910. Map taken from page 31