Further purchase agreements were entered into in 1661, 1672 and 1686 which, among other things, allowed a group of Easthampton townsmen to graze cattle on the Montaukett lands. While some lands were protected in the agreements as forest land, for the most part, all of Montauk was maintained by the townsmen as a private livestock and fisheries operation. As a result of Montauk being operated as a livestock operation, it is considered to be the oldest cattle ranch in the United States.