Browse Items (11 total) Tags: Keystone Browse All Browse by Tag Search Items Browse Map Sort by: Title Creator Date Added / 2 pages View of North Fork South Platte River before installation of Keystone Bridge Simmons, W. P. 4/12/1985 Sort by: Title Creator Date Added / 2 pages Output Formats atom, dc-rdf, dcmes-xml, json, omeka-xml, rss2