The many books and articles produced by the Workmans are "still useful" according to Mason, especially for their photographs and illustrations, but their maps are "deceptive and not always reliable".
O gran número de libros e artigos publicados polos Workman son segundo Mason "aínda útiles", especialmente polas súas fotografías e ilustracións, malia que os seus mapas son "enganosos e non sempre fiables".