^{Page 131 of Note *} Michael, H.N. and Ralph, Elizabeth K. 1972. Discussion of radiocarbon dates obtained from precisely dated Sequoia and Bristlecone Pine samples, Proc. ith Int. Conf. on Radiocarbon dating, Lower Huit City. vol. 1, 28 to 43;Google Scholar Damon, P.E., Long, A. and Wallick, E.I. 1972. Dendrochronology calibration of the Carbon-14 time scale, ibid., 45–59.Google Scholar

^{Page 131 of Note †} Suess, H.E. 1970. Bristlecone Pine calibration of the radiocarbon time scale 5200 BC to the present, XII Nobel Symposium (Radiocarbon variations and absolute chronology), 303–309.Google Scholar

^{Page 132 of Note *} Olsson, I.U. Explanation of plate IV (1970) Radiocarbon variations and absolute chronology, XII Nobel Symposium, 625–6.Google Scholar

^{Page 132 of Note †} Wendland, W.M. and Donley, D.L. 1971. Radiocarbon-calendar age relationship, Earth and planetary science letters, vol. 11, 135–9.CrossRefGoogle Scholar