 Another Marcus contribution to the arts was his own work in the area of photography.Over the course of his adult life, Marcus took thousands of photographs, both of famous and anonymous subjects, which he turned over to granddaughter Allison V. Smith, a professional photographer, upon moving out of his Nonesuch Road home into a smaller residence in the late 1990s.Two years after his death, Smith began making digital scans of the photos and posting them to the sharing site Flickr; despite the fact that their authorship was not identified, within a year the photographs had drawn 10,000 views.