In spite of the huge amount of French literature discussing the Black Mass (Messe Noire) at the end of the 19th century and early 20th century, no set of written instructions for performing one, from any purported group of Satanists, turned up in writing until the 1960s, and appeared not in France, but in the United States. As can be seen from these first "Black Masses" and "Satanic Masses" appearing in the U.S., the creators drew heavily from occult novelists such as Dennis Wheatley and Joris-Karl Huysmans, and from non-fiction occult writers popular in the 1960s, such as Grillot de Givry, author of the popular illustrated book "Witchcraft, Magic and Alchemy", and H. T. F. Rhodes, who provided a title for the satanic ritual in his 1954 book "The Satanic Mass". Herbert Sloane, the founder of an early Satanist group, the Ophite Cultus Satanas, speaks of Satanists performing the ritual of the "Satanic Mass" in a letter he wrote in 1968 (see the article on his group), and in 1968 and 1969 also appeared the first two recordings of Satanic rituals, both entitled the "Satanic Mass":