Armstrong Mountain (Keene Valley, New York) Armstrong Mountain (Keene Valley, New York) Armstrong Mountain is a mountain located in Essex County, New York, named after Thomas Armstrong, a local pioneer. The mountain is part of the Great Range of the Adirondack Mountains. Armstrong Mtn. is flanked to the southwest by Gothics, and to the northeast by Upper Wolfjaw Mountain. Armstrong Mountain stands within the watershed of the East Branch of the Ausable River, which drains into Lake Champlain, thence into Canada's Richelieu River, the Saint Lawrence River, and into the Gulf of Saint Lawrence. The east side of Armstrong Mtn. drains into the East Branch of
Lake Champlain and St. Lawrence Junction Railway pulling delivery wagons. The line was leased to the Canadian Pacific Railway in 1887 and survived into the 21st century as part of the CPR Farnham Division. Lake Champlain and St. Lawrence Junction Railway The Lake Champlain and St. Lawrence Junction Railway was a historic Canadian narrow-gauge railway operating in the Richelieu River valley of Quebec. The 1871 charter of the Philipsburg, Farnham and Yamaska Railway Company was renamed in 1875 and commenced operation between Stanbridge and Saint-Guillaume in October 1879. The line was leased to the South Eastern Railway (SER) in 1880. The rail line and locomotives were converted