From Helderberg Hilltowns of Albany County, NY
For the location of this lot click on 1787 survey map.
(To be added) 
- (to be added)
- 1787 survey map sheet 3 shows Philip Bater on lot 829.
- 1864 Stephen VanRensslaer lease to Palmer Gallup. March 30,1864.
- 1866 Beers map of Knox shows ...
- William H.Ketchem Farm. Lot 829 on the map of Rensselaerwyck , 135 acres, same as leased to Palmer Gallup 1864.
- Survey notes ca. 1787
- Old insurance papers found by Bernice Swimmer, a great granddaughter of William H. Ketcham.