Old Scottish Customs, Local and General. By E. J. Guthrie.
Ordnance Gazetteer of Scotland. Edited by Francis H. Groome.
Peasant Life in Sweden. By L. Lloyd.
Popular Antiquities of Great Britain. By John Brand, M.A.
Popular Romances of the West of England. By Robert Hunt, F.R.S.
Popular Tales of the West Highlands. By J. F. Campbell.
Pre-historic Annals of Scotland. By Daniel Wilson, LL.D.
Pre-historic Man. By Daniel Wilson, LL.D.
Primitive Culture. By Edward B. Tylor, D.C.L.
Proceedings of the Society of Antiquaries of Scotland. Old Series, 1851–1878; New Series, 1878–1891.