Ross, T. 1902. Notes on Sculptured Stones with Chariots, in the neighbourhood of Auchterarder, and in Perth Museum, and of a Sculptured Monument recently found near Camelon, and now in the National Museum. Proceedings of the Society of Antiquaries of Scotland. 36, (Nov. 1902), 597–610. DOI:https://doi.org/10.9750/PSAS.036.597.610.