The Book of Law

The Book of Law was dictated to Aleister Crowley in Cairo between noon and 1PM on 3 successive days. This occurred on April 8, 9, and 10th of 1904. This was dictated by Aiwass who described himself as the minister of Hoor-paar-kraat. He showed knowledge by the use of cipher or cryptogram.

Here is a link to purchase the Book of Law:
Book of the Law

Theodor Reuss

Theodor Reuss was an Anglo-German tantric occultist, freemason, police spy, journalist, singer, and head of the Ordo Templie Orientis. In 1885 he joined the Socialist League. There were tensions with anarcho-communist Josef Peukert and Bakunist Victor Dave. Theodor Reuss became acquainted with Aleister Crowley in 1910. He made Crowley a 7th degree initiate of the OTO. In 1912 he appointed Aleister Crowley as national Grand master General of the 10th degree for the OTO.

Argentium Astrum

Argentium Astrum is a magickal society which was created in 1907. The goals of this magickal order are the pursuit of light and knowledge. 'The method of science, the aim of religion' are it's motto. Aleister Crowley founded this order. After his death it was taken over by Karl Germer. There are various lineages of Argentium Astrum. One lineage descends from the actress Jane Wolfe who was known as Soror Estai. Phyllis Seckeler founded the College of Thelema in 1973. She was a student of Jane Wolfe. 

This book is a useful biography about Aleister Crowley:  Perdurabo, Revised and Expanded Edition: The Life of Aleister Crowley