The wood shingles on the roof of this Tudor Revival house (above) were steamed and bent to resemble thatching. To aid architects and contractors to lay such special effects shingles properly, manufacturers like the Creo-Dipt Company, Inc. of North Tonawanda, New York, published roof details, like those in the 1923 Sweet's Architectural Catalogue. (Photograph courtesy of NPS; "Country Cottage Roof".)