[31] Catalogue of Prehistoric Works East of the Rocky Mountains, p. 22.

[32] Id., p. 26.

[33] Id., p. 48.

[34] Id., p. 50.

[35] Id., p. 51.

[36] Id., p. 57.

[37] Id., p. 63.

[38] Id., p. 69.

[39] Id., p. 74.

[40] Id., p. 75.