Fossil Forests of the Yellowstone National Park, by Frank Hall
   Knowlton  63519
     [Link: http://www.gutenberg.org/6/3/5/1/63519 ]
     [Files: 63519-0.txt; 63519-h.htm]
   Thanks to Stephen Hutcheson and the Online Distributed
   Proofreading Team at https://www.pgdp.net (This file was
   produced from images generously made available by The
   Internet Archive/American Libraries.)
   Chuck