Greetings,
Hotema has been dead for about 40 years and never published his books. A friend of his printed the books as loose and they are all dead now. As far as I know, the daughter of the publisher still reprints these and thousands of other books.
I can't think of the name right off hand, it is in Washington State.
You will spend about $1,000 for the books by the time you have to have them all!
Search for old health books and it should come up.