I have the original hard copy books by Churchward: “The Lost Continent of Mu,” “The Children of Mu,” and “The Sacred Symbols of MU.” Don’t have the last book of the series.
They are in some dis-repair, but readable. Churchward was sort of a crackpot, but who knows, maybe he was right?
The books are from the 1930’s. My Aunt was highly interested in the stuff. She spent many hours talking to me about Mu and about Archaeology in general.
I miss you, Aunt Dory.