Garwood, E J. (1931). ‘The Tuedian Beds of North Cumberland and Roxburghshire, East of Liddel Water)’, extract of the Quarterly Journal of the Geological Society, v.87, pp.97-159 + 10 plates, comprising 8 photo plates of fossils and thin sections, one foldout b/w untitled map showing drainage and locations of the reef outcrop, 1:63,360 (39 x 18cm) and one foldout colour printed ‘[Geological Map of] the Tuedian and Associated Beds of North Cumberland’, 1:63,360 (33 x 43)    cm) cover slightly soiled and has library stamp, text age-toned and with library stamp on back of map but otherwise clean. In good to very good condition.