Subject files, correspondence, maps and property records, including title information, agreements, leases, easements, appraisals, and photographs, regarding City Light power sites and other properties. Sites include Boundary Dam, Cedar Falls hydroelectric project and transmission lines; Kiket Island in Skagit County, the site for a proposed, but not built, nuclear power plant; a Tukwila site for a proposed, but not built, substation to serve the Southcenter shopping mall; the Lake Union Steam plant and its cleanup; Thunder Creek in the Skagit River basin, and Samish Island