Member, American Institute of Architects, Washington Chapter, 1910-1911;

Dietz indicated his name was "F.G. Warner." See Duane Dietz, Architects and Landscape Architects of Seattle, 1876-1959, (typescript, 1994); The Seattle Architectural Club Yearbook 1910, (Seattle, WA: Seattle Architectural Club, 1910, n.p.), indicated the name of a member of the American Institute of Architects, Washington State Chapter, as "F.T. Warner."