Anne Stevenson Hobbs, "Flora and Fauna, Fungi and Fossils," In: Beatrix Potter, 1866-1943: The Artist and Her World. (London, 1987), pp. 71-94.
Mary Noble, "Beatrix Potter, Naturalist & Mycologist and Charles McIntosh, the 'Perthshire Naturalist.'" Reprinted from: Notes from the Royal Botanic Garden Edinburgh, Volume 44, No. 3. (Edinburgh, 1987), pp. 607-27.
W.P.K. Findlay, Wayside & Woodland Fungi...with 59 colour illustrations of Fungi by Beatrix Potter, London, (1978).
Eileen Jay, Mary Noble, Anne Stevenson Hobbs, A Victorian Naturalist: Beatrix Potter's Drawings from the Armitt Collection, (London, 1987).