Link

Tiree
'Ancient Sculpturings In Tiree' on the ADS website

Ancient Sculpturings In Tiree. By Ludovic Maclellan Mann. From the Proceedings of the Society of Antiquaries of Scotland, Vol. 56
February 13, 1922.

The article mentions (with illustrations) cup marked stones at Gott Bay, Cornaigmore, Cuigeas, including some on a Standing-stone at Balinoe and others on the natural rock surface of floor of Kirkapoll Chapel.