American Heritage. (1957). Great Historic Places. New York: Simon & Shuster, pp. 250,251.

Arment, Chad. (Jan. 21, 1999) An Ohio Alligator. Available:

Chamberlain, Von Del (1996) Looking Around Crab Nebula Available:

Chartrand, M.R. (1990). SKYGUIDE. New York: Golden Books.

Cameron, J.R., N. Suntharalingam and G.N. Kenney (1968). Thermoluminscent Dosimetry. Madison, WI: University of Wisconsin Press.

Collins II, G.W., Claspy, W.P. and Martin, J.C. (1999) A Reinterpretation of Historical References to Supernova of AD 1054 The Astronomical Society of the Pacific III: 871-880, 1999 July.

Donn, J. (Nov. 12, 1998) Scientists Seek Clues in Medieval Supernova Mystery The Plain Dealer. Cleveland: Associated Press, p. 13A

Garner, H.A. and Herbert Packer (1968). Wick-Stick Elements. Appl. Spectroscopy, 22 (2) 122, 123.

Glotzhober, R.C. and B.T. Lepper (1994). Serpent Mound: Ohio's enigmatic effigy mound. OHS: Columbus, OH, 1994.

Greening, Dan (1996) Chaco Canyon 1054 Supernova Petrographs Available:

Hansen, M.C. (1998). Serpent Mound Disturbance, Timeline, 15 (5) 46-51 and cover following p. 56.

Howe, H. (1990). Serpent Mound. Historical Collections of Ohio, Vol I. Cincinnati: Krehbiel, pp. 222,232-233.

Ibid, Squirrel Damage, pp. 658-659, 922-923.

Ibid, Alligator Mound. Historical Collections of Ohio, Vol II, pp. 86, 92.

Ibid. Ancient Works, p. 68.

Ibid. Indian Tribes 1803, p. 154.

Knapp, J. (Jan 22, 1999) The Alligator Mound - A Hopewell Effigy. Available:

Lepper, B.T. (1998). Ancient Astronomers of the Ohio Valley, Timeline, 15(1), 2,4.

Lepper, B.T. (1998). Serpent Mound. Timeline, 15(5), 33-37, 40, 45.

Lepper, B.T. (1999) What a Difference a Millennium Makes, OHS, Echoes, Vol 38, No 6, Dec 1999/Jan 2000.

Levy, D.H. (1995) Skywatching, Time-Line Books Singapore: Weldon, Owens Prod., pp. 99, 108-119.

Putnam, F.W. (1889/1890). The Serpent Mound of Ohio. Century Magazine XXXIX, 871, 887. (Reprinted by McGraw, Arthur W. (1993).

Randall, E. (1907). Serpent Mound. Columbus, OH: OH Archaeological and Hist. Soc.

Randall, E. (1908, reprint 1997). Ohio Mound Builders: The Hilltop Fortifications. Columbus, OH: OH Archaeological and Hist. Soc.

Smucker, I. (Nov. 1885). Alligator Mound an effigy or symbolic mound in Licking County, Ohio. American Antiquarian, VII(6).

Squier, E. and E. Davis (1848). Ancient Monuments of the Mississippi Valley. Contribution to Knowledge Smithsonian Institution, 1.

Swinehart, Carl F. (1967) TLD-700 US PAT 3320180

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