The Leland F. Skillin Collection consists of materials generated and assembled by Skillin reflecting his work as an engineer with the U.S. Army Corps of Engineers and Willamette Iron and Steelworks. The Collection includes articles, correspondence, employment records, a notebook, photographs, publications, and technical drawings. Most of the materials document Skillin's work on Willamette Basin Project dams and other Oregon dams, including facilities at Fern Ridge, Dalles, Foster Reservoir, Bonneville, and McNary. The materials illustrate Skillin's calculations for a 15-ton Gantry Crane needed for dam construction, collection of wood truss/connector structure information, and a study for temporary pump facilities at the Willamette National Lumber Company pending construction of Foster Dam. A notebook includes flood data for Rainier, Oregon, that was compiled by Skillin.
Skillin's employment records include travel reports, studies, and memoranda in which Skillin describes his project work, inspection tours, and attendance at conferences. The photographic prints depict Skillin's co-workers and the construction of various dams. The photographs also include images of Wallowa Lake, the Snake River Canyon, and an unidentified bridge.