Report on the Sculptured Stones Older Than A.D. 1100, With Symbols and Celtic Ornament, in the District of Scotland South of the River Dee; Obtained under the Victoria Jubilee Gift of His Excellency Dr. R. H. Gunnning, F.S.A. Scot. PSAS 1892, 26, 251-259. https://doi.org/10.9750/PSAS.026.251.259.