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WL-Dow-Book-ShadowThroughout Sioux Falls and across South Dakota you can see the use of Sioux Quartzite in structures designed by architect Wallace L. Dow.

Originally from New Hampshire, Dow traveled to the Dakota Territory in the 1880’s. Quickly he became known as the premier architect of the area, well known for his iconic structures like the Sioux Falls County Courthouse, the State Penitentiary as well as many beautiful private residences.

Despite his impact to the area, the story of W.L. Dow has been a mystery. Documentarians Brad and Jennifer Dumke are the the first to share Dow’s story and look at his life and work through film and in a book. Both are available at