Robertson, Joseph. “Notice of a Volume of the ’Accounts of Sir William Bruce of Balcaskie, General Surveyor of His Majesty’s Works (1674-1679),’: Formerly Preserved in the Charter-Room at Kinross, and Lately Presented to Her Majesty’s General Register House at Edinburgh, by Sir Graham Graham Montgomery, Bart. Of Stanhope, MP”. Proceedings of the Society of Antiquaries of Scotland, vol. 3, Nov. 1862, pp. 113-7, doi:10.9750/PSAS.003.113.117.