english deutsch
Discovery and Invention in Yellowstone
http://xroads.virginia.edu/~MA96/RAILROAD/ystone.html
focusing on the early years and the Great Northern Railroad
Early History of Yellowstone
http://www.nezperce.com/yelpark9.html
from Western Treasures
The Establishment of Yellowstone
http://lcweb2.loc.gov/ammem/gmdhtml/yehtml/yeabout.html
brief history of Ferdinand Hayden and his role in establishing the Park