Museum, 1986, British Museum Press, On livery badges: Brown, Peter. A Companion to Chaucer, Wiley-Blackwell, 2002, , Google books Campbell, Lorne. National Gallery Catalogues: The Fifteenth Century Netherlandish Paintings, National Gallery Publications, London, 1998, Castor, Helen. The king, the crown, and the Duchy of Lancaster: public authority and private power, 1399-1461, Oxford University Press, 2000, , . Google books Fox-Davies, Arthur Charles. Heraldic Badges, J. Lane, 1907. Reprint by BiblioBazaar, LLC, 2009, , Google books Given-Wilson, Chris, Richard II and the Higher Nobility, in Goodman, Anthony and Gillespie, James (eds): Richard II: The Art of Kingship, Oxford University Press, 2003, , Google books Siddons, Michael Powell. Heraldic Badges in England and Wales (partial pdf), 4 vols, Boydell & Brewer, 2009, Steane, John. The Archaeology of the Medieval English Monarchy. Routledge, 1999. Google books Further reading Cherry, John. "The Dunstable Swan Jewel", Journal of the British Archaeological Association, XXXII, 1969 Evans, Vivienne (ed). The Dunstable Swan Jewel, Dunstable Museum Trust, 1982 Gordon, D. Making and meaning: The Wilton Diptych, London: National Gallery, 1993 Wagner, A. R. "The Swan Badge and the Swan Knight", Archaeologia, 97, 1959 Works in vitreous enamel Medieval European metalwork objects Medieval European objects in the British Museum Gold objects Birds in art Swans Badges Individual brooches Heraldic charges