Paul, J.B. 1891. Notes (1) on a set of Shuffle-board Counters with Portraits of Kings and Heraldic Devices, about 1640; (2) on a Silver Badge of the Conservator of Scottish Privileges in the Netherlands - exhibited by Sir Robert Fraser Turing, Bart. Proceedings of the Society of Antiquaries of Scotland. 25, (Nov. 1891), 397–402. DOI:https://doi.org/10.9750/PSAS.025.397.402.