From Kook Science
C.N. is the abbreviation of the name of a spirit that Ethel P. Hill professed she channeled, particularly in the 1927 book What Next? (Boulder Creek, CA: Cosmos Publishing Co.). According to Hill, C.N. was an American man, who in life was not a Spiritualist, having an Orthodox background, described as a "strictly moral but unspiritual and unimaginative type of man."
- Hill, Ethel P. (1927), What Next? Dictated by 'C.N.' thru the pencil of Ethel P. Hill, Boulder Creek, California: Cosmos Publishing Co., http://catalog.hathitrust.org/Record/006517838