William L. Steele

William LaBarthe Steele (May 2, 1875 – March 4, 1949) was an American architect from Chicago, Illinois.

He is considered a principal member of the Prairie School Architectural Movement during the early 20th century.

In 1904, he settled in Sioux City, Iowa, where he stayed for 25 years until moving to Omaha, Nebraska, in 1929.

The Woodbury County Courthouse in Sioux City is considered to be a premier example of Prairie School aesthetics, which he developed along with Minneapolis-based architects George Grant Elmslie and William Gray Purcell.

[1] Architect Knute E. Westerlind, a protégé of Steele's, designed the PWA Moderne Sioux City Municipal Auditorium in 1938.