Charles Walcott at Fossil Quarry, Burgess Pass, 1911 or 1912
from the Smithsonian Institution:
http://siarchives.si.edu/techsvcs/walcott/main_article.htm
Image ID: 7004/b44f4/84-16281_0

March 31, 1850 - Charles Walcott's birthday
In 1909, Charles Walcott, then Secretary of the Smithsonian Institution
and the leading expert on Cambrian-age fossils at the time,
discovered the Burgess Shale.