Excavation of a Chambered Cairn at Ham, Caithness, and of a Hut-Circle and Two Earth-Houses at Freswick Links, Caithness: With a Note on a Winged Horse carved on one of the Lintels in the Earth-House at Crichton Mains, Midlothian. PSAS. 1925;59:85-95. doi:10.9750/PSAS.059.85.95