(Nora Hague, 23 January 2023) Notman frequently worked with John Walker, a master engraver, producing the photographs from which Walker made printable images. This stove was one of three photographed by Notman and used by Walker, probably for a catalog, but it might have been for an advertisement in a newspaper. The McCord [Museum] is lucky in having both Notman's picture books and negatives, and Walker's voluminous scrapbooks.