Relief shown by shading and spot heights. The line marked in red indicates the most advanced points ever reached by German forces. The blue line indicates the present German line, including all changes up to December 4, 1917. Verso includes article "Little Things Worth Knowing," and story "But Billy Persisted," by Ralph S. Crowl, with illustrations. Description of map on verso, with statistics, under heading "Points to Note About the War Map on Pages 10 and 11." "All that can be said of the authorship of the map is that it is the work of a military expert of the highest standing." Likely a Sunday publication of the Chicago Tribune.
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