Biodiversity Heritage Library
By "Union Pacific Railroad Company. "
The fossil fields of Wyoming : reports / by members of the Union Pacific expedition.
By: Union Pacific Railroad Company.
Publication info: Omaha, Neb. :Passenger Department, Union Pacific Railroad Company,
Contributed by: Harvard University, Museum of Comparative Zoology, Ernst Mayr Library
BHL Collections: Ernst Mayr Library of the MCZ, Harvard University