A comparative study of nails, 1895 (Jay; Hall, inside cover image)
Roman archaeological finds, including rings, needles, spoons, a chain and a comb, 1895 (Barnard p.63)
Roman leather shoe, 1895 (Barnard p.65)
Jay, E; Hall, J, The tale of London past : Beatrix Potter's archaeological paintings, from the Armitt Collection, Ambleside (London, 1990)http://catalogue.libraries.london.ac.uk/record=b2642384~S7
Barnard, B, 'Before Peter Rabbit' The Independent magazine (27.10.1990) 112 pp.62-65
http://catalogue.libraries.london.ac.uk/record=b2493164~S7
See also:
http://armitt.com/armitt_website/beatrix-potter/
http://www.vam.ac.uk/content/articles/t/beatrix-potter-collections/