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- Subject: Acámbaro (Guanajuato, Mexico) -- Description and travel X
Call Number: YCAL MSS 283
The Charles H. Hapgood Papers consist of correspondence, manuscripts, and research materials related to Hapgood's research projects and publications on earth science, archeology, ancient history, parapsychology, and spirit communication.
Dates: 1898-1979, bulk 1950-1979