Manuscript entitled, Fossil Flora and Fauna of the Pennsylvanian Period, Will County, Illinois
by George Langford (1876-1964)
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More of GL's handwritten material on the formation of coal, pp 12-13.
GL's handwritten notes on the formation of coal, page 12. GL's handwritten notes on the formation of coal, continued, page 13.
Formation of Coal - Bottled Sunshine, GL's handwritten notes, page 12
 Coal, bottled Sunshine, GL's handwritten notes, continued, page 13