Fortunately many of these cast iron signs used as Town Name signs or Stream Name signs still remain, although far too many have disappeared from the roadside as roads and towns expanded, but also sadly through simple neglect by town leaders.  This use of the keystones was predated by their use as regular “Traffic” signs by the then Department of Highways.   Speed limits, curve ahead, intersection, steep hill, and such messages were on the roadsides.   The use of these keystones for Town and Stream names began in the mid-1920s.   Another use of them was at Commonwealth agency properties – state colleges, state tree nurseries, and fish hatcheries are examples.   The sign here pictured is at the Reynoldsdale hatchery in Bedford County.