The Northwestern Improvement Company, the mining and land investment branch of the Northern Pacific Railway, built many large mining facilities in Roslyn. Looking southwest from a major mining shaft, the coal mining power house, the small business district and residential are of Roslyn can be seen.Colored postscard titled "The Northwest Improvement Co's Mining Shaft, Roslyn, Washington."
"Mining Shaft at Roslyn" (1900). Ellensburg History Photographs. 11.
Local History Collection Photographs, Ellensburg Public Library
Kittitas County (Wash.) -- Cityscapes, Historic districts -- Washington (State) -- Kittitas County, Cityscapes -- Washington (State) -- Kittitas County, Roslyn (Wash.) -- Cityscapes, Coal mines and mining -- Washington (State) -- Roslyn, Northern Pacific Railway Company, Northwestern Improvement Company