Stevenson, J H, Lionel A Crichton, William Brook, James Ritchie, and W Wright Smith. 1931. “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 65 (November):217-55. https://doi.org/10.9750/PSAS.065.217.255.