Laing, D. . (1875) “An Episode in the life of Mrs Rachel Erskine, Lady Grange. Detailed by herself in a Letter from St Kilda, January 20, 1738, and other Original Papers. Communicated by David Laing”, Proceedings of the Society of Antiquaries of Scotland, 11, pp. 593–608. doi: 10.9750/PSAS.011.595.608.