Partner, Simonson, Putnam and Associates, Architects, Seattle, WA, 1948-1949; Partner, Mattson, Smith and Putnam, Architects, Seattle, WA, 1950-1952; Partner, Mattson, Putnam and Simkins, Architects, Seattle, WA, 1953; Partner, Mattson and Putnam, Architects, Seattle, WA, 1954;