The Delaware &  Raritan Canal  Commission is celebrating its 50th birthday and the Society will give them a tip of the hat with an exhibit  of 1970s newspaper clippings, correspondence between the State of New Jersey and property lessees, maps and photographs  (all from a private collection) of the Griggstown bridgetender’s house  titled  Griggstown and Blackwell’s Mills Ephemera from the 1970s.