Shattuck, John W. (pseud. of W. J. Sidis). The Tribes and the States (unpublished manuscript), 1935. Chapter XIX, Section 104b. "It was about this time that the old Massachusetts rebel emblem of the Pine Tree, which was in its turn the emblem of the Penacook tribes, denoting the pine forests of New England and the type of freedom native to them, was put into use in modified form as a symbol of protest against arbitrary authority. The Pine Tree was still the emblem of the Massachusetts rebels, especially of the Okamakammesset followers; while those who indulged in the more centralized forms of protest sponsored by the Sons of Liberty in the colonies as a whole used the device in the modified form of a tall pole―the Pine Tree without its needles. These "liberty poles" played a great part in subsequent demonstrations against the authorities in [North] America, and were later adopted as a rebel emblem in other countries." http://www.mortenbrask.com/wp-content/uploads/The-tribes-and-the-states-SIDIS.pdf
