Map shows the accurate, reported and proposed trenches in the sector for third corps. It also shows the names of trenches and sectors. The date range from April to June 2018.
Somme Crossing and trenches around it. Map updated with information gathered by 6-1-18.
Map of the bounty lands in Illinois Territory.
Gardiner, John Ralph
Surface structure map of Shelby, Effingham and Fayette counties
Newton, William Albert, 1912
Atlas of the State of Illinois : to which are added various general maps, history, statistics and illustrations
Warner & Beers
Alphabetic catalog of the books, manuscripts, maps, pictures and curios of the Illinois State Historical Library : authors, titles and subjects
Illinois State Historical Library