COLUMBIAN CENTINEL, Boston, Sept. 7, 1822  A page 2 report states that: "...the Great Dam across the Hudson, at Fort Edward, is completed, and filled...It is 30 feet high, and 900 feet long...It has been constructed to supply the Northern Canal with water. "
Then another report on the Erie Canal noting: "...that Stephen Van Rensselaer...engaged Professor A. Eaton, of Troy, to take a Geological and Agricultural Survey of the Great Canal...from Albany to Buffalo, a distance of 360 miles..." and more about the survey.
Four pages, minor foxing, good condition.