Prairie College architect who was simply somebody in the company, Purcell & Elmslie. Designed several banks, train channels, and commercial structures, mainly in the Midwestern U.S. His several partnerships led him to collaborate with such notables as Hermann V. von Holst, William Eugene Drummond, and William L. Steele. He and his company had been second to Frank Lloyd Wright in commissions received. He was called a Fellow in the American Institute of Architects in 1947. He lied about his age group to be able to get into the U.S. from Scotland. He became a member of his dad, John Elmslie, in Chicago after departing Scotland being a guy. He proved helpful for Louis Sullivan in the first 1900s.