Stevenson, J H, et al. “The Bannatyne or Bute Mazer and Its Carved Bone Cover: With Appendix: (1) Note on the Provenance of the Mazer; (2) Note on the Boss of the Mazer; (3) Zoological Note on the Whale Bone Cover of the Mazer; (4) Botanical Note on the Plant Represented in the Carving on the Mazer Cover; (5) George Robertson’s (erroneous) Account of the Shields on the Bowl”. Proceedings of the Society of Antiquaries of Scotland, vol. 65, Nov. 1931, pp. 217-55, doi:10.9750/PSAS.065.217.255.