Part of the U.S. Library of Congress's Detroit Publishing Company Photograph Collection.
- Dry plate negatives.
- 1 negative : glass ; 8 x 10 in.
Detroit Publishing Co. , publisher
- Title from jacket.
- Pan American Union Building at left.
- "G 8017" on negative.
- Detroit Publishing Co. no. 039977.
- Gift; State Historical Society of Colorado; 1949.