Ordnance survey of the county of Londonderry

By Lieut. T.A. Larcom, Colby's assistant in the Irish survey, who conceived the idea of compiling a work embracing every description of local information relating to Ireland. This was the only volume published, the government declining, on the ground of economy, to permit its continuance. cf. Preface, and Dict. nat. biog., vol. XXXII, p. 144

Half-title: Memoir of the city and north western Liberties of Londonderry. Parish of Templemore