[Interior of salt mine] [graphic].
Detroit Publishing Co., publisher.
still image
Dry plate negatives. gmgpc
Photographic prints Reproductions. gmgpc
[between 1915 and 1925]
eng
Title from jacket.
Probably related to negatives D420-2342 to D420-2360.
Detroit Publishing Co. no. K 2347.
State Historical Society of Colorado;
Mine railroads.
Salt mining.
Detroit Publishing Company photograph collection (Library of Congress)
http://hdl.loc.gov/loc.pnp/det.4a27857
No known restrictions on publication.