This edition includes Liber 777, Gematria (from Equinox Volume 1, Number 5), and Sepher Sephiroth (from Equinox Volume 1, Number 8).
The first appearance of 777 was published anonymously in 1909 after Crowley had written it from memory in just a week. An introduction to one edition by “Frater N.’.” states that Crowley may have published it anonymously because it was taken from a Hermetic Order of the Golden Dawn manuscript that was obligatory for initiates to memorise.
The rest came from his extensive study of the different religious and magical systems of the world