   sargent's purchase is a township located in coos county, new hampshire, united states. as of the 2010 census, the purchase had a total population of 3.united states census bureau, american factfinder, 2010 census figures. retrieved march 23, 2011. in new hampshire, locations, grants, townships (which are different from towns), and purchases are unincorporated portions of a county which are not part of any town or city and have limited self-government (if any, as many are uninhabited). ==history== the first known explorer to have stepped foot in what is now known as sargentâs purchase was darby field, who claimed to have made the first ascent of mount washington in 1642. sargentâs purchase was granted to jacob sargent and others on may 31, 1832. in may 1866, sylvester marsh of campton, new hampshire, began construction of the mount washington cog railway, primarily in thompson and meserve's purchase, but the uppermost half mile being wi
Berlin,_New_Hampshire_micropolitan_area Townships_in_Coos_County,_New_Hampshire Townships_in_New_Hampshire