This is my 777th blog post, so today I chose to talk about (drum roll please)...777.
777 is Aleister Crowley's expanded and modified version of the Golden Dawn document known as The Book of Correspondences. Just like the guide sheet for the creation of Godforms seems to have been restricted to the office of Hierophant, the Book of Correspondence seems to been restricted to the office of Praemonstrator. This is not to say that other members did not know of its existence. Parts of it was spoon-fed to the students of the system in the Knowledge Lectures of the various Grades. By the time that one was an Adept Minor, one had a large part of the Book of Correspondences available to them. Inside the Order, one could assemble the known parts that were circulated among the Knowledge Lectures, and add to it, making a personal copy of the document (much like the members of BOTA end up with a Book of Numbers--think Sepher Sephiroth). Or at least, that is the way I understand the extent of its circulation among the Order.
Crowley was most likely working from Allen Bennett's personal copy. Today, most ceremonial magicians own a copy issued though Weiser. I brought my copy back in September 1994; it is now held together with packing tape. I filled a couple of hardbound journals with some additional material that I mapped to the paths of the Tree of Life.
777 was not the first set of correspondences to be published. Agrippa and several magical calendars predate Crowley's publication, as do some materials focused on astrology. But I will admit that for organization, Crowley is the winner.
In recent times, there have been several books that have expanded the possibilities of information to be included in one's personal copy of the Book of Correspondences. These include The Magician's Companion: A Practical Encyclopdic Guide to Magical & Religious Symbolism (Bill Whitcomb) and The Magician's Tables: A Complete Book of Correspondences (Alan Richardson).
The best expansion of 777 (at this time) is Stephen Skinner's The Complete Magician's Tables. Not all the tables in Skinner's work agree with Crowley's--but that is ok. And I love randomly googling names from his Uniform Timeline.
Needless to say, my favorite version is my own. I think most working magicians and witches would say the same. After all, it is the version that corresponds exactly with the associations that I use in my own personal magical workings.