Carlson House The Gust and Hanna Carlson House photographed by Dennis O’Hara in 2009. Gust Carlson was a copper mining executive and a developer of taconite. (Image: Northern Images) 202 24th Avenue East | Architect: A. Werner Lignell | b. 1910; | Extant From Picture Duluth: Photographs of the Zenith City by Dennis O'Hara and Tony Dierckins (Zenith City Press 2010) featuring over 200 modern photographs of Duluth's parks, landmarks, grand old homes and buildings, and its working waterfront. Click on the cover to preview the book.