Hapgood, Charles H. (Autor Personal)

His Earth's shifting crust, 1958.

Keene Sentinel, Dec. 22, 1982: p. 2 (Charles H. Hapgood, born in New York City May 17, 1904, died in Fitchburg, Mass., Dec. 21, 1982)

Charles H. Hapgood papers, 1898-1979 (Charles H. Hapgood, son of authors Hutchins Hapgood and Neith Boyce)