Hi Alfred, Yes he claimed that in his book The Great Psychic. He did not have a note on that page in an index in the back of the book indicating the specific papers. I re-called him making a self-doclosure of people being critical about his books not having bibliographies about his sources. Seems like people were asking that same question when he was alive. Today in 2013 it is still not resolved. If I find any outside proof of that claim I will pass it on.
Hi Alfred, Yes he claimed that in his book The Great Psychic. He did not have a note on that page in an index in the back of the book indicating the specific papers. I re-called him making a self-doclosure of people being critical about his books not having bibliographies about his sources. Seems like people were asking that same question when he was alive. Today in 2013 it is still not resolved. If I find any outside proof of that claim I will pass it on.