Memoir Of The Life Of Major-General Colby : Kessinger Publishing : 9781163523520 : 1163523526 : 10 Sep 2010 : Memoir Of The Life Of Major-General Colby: Together With A Sketch Of The Origin And Progress Of The Ordnance Survey Of Great Britain is a biographical work written by Joseph Ellison Portlock. The book provides a detailed account of the life of Major-General Thomas Colby, a prominent figure in the history of British cartography and surveying. The memoir covers Colby's early life, his military career, and his role in the establishment and development of the Ordnance Survey, a government agency responsible for mapping and surveying the entire country. The book also includes a brief history of the Ordnance Survey, from its origins in the late 18th century to its modern-day operations. The author draws on a range of sources, including Colby's personal diaries and letters, to provide a comprehensive and engaging portrait of this important historical figure. Overall, Memoir Of The Lif