This accession consists of glass plate negatives of specimens from the Burgess Shale in the Rocky Mountains, near Field, British Columbia, Canada, collected by Charles
D. Walcott, fourth Smithsonian Secretary. Materials include glass negatives of fossilized remains embedded in shale slabs and illustrations used in publications, as well as
lantern slides used to illustrate lectures. Many of the negatives appear to be original photographs possibly created by the Institution's photographer T. W. Smillie.