Brook, A. J. S. (1906) “Notes on a Brass Table Clock bequeathed to the Society of Antiquaries of Scotland by the late Hugh J Rollo, W.S., and a Silver-cased Table Clock bequeathed to the Society by the late Lady Jane Dundas”, Proceedings of the Society of Antiquaries of Scotland, 40, pp. 266–276. doi: 10.9750/PSAS.040.266.276.