Fossil Flora and Fauna of the Pennsylvanian Period, Will County, Illinois
George Langford (1876-1964)
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Portraits of the two collectors, George, Jr. and George, Sr. and the mining process; the year was 1938; page 11.
George Langford, Jr. (1901-1995)
George Langford, Sr. (1876-1964)
Note: Nowadays, no one dares break the nodules open in the field, as there are so few to be found. Instead, a freeze-thaw-freeze technique is used. GL III, ed.
Strip Coal Mining, 1938.
Section of Pit Wall.