Just a bit more on the TD Tarot, this also from my essay:
And what of the seven greater trumps? They match the seven moons or planets of this world. They also—this is clever—represent the figures in Crowley’s planetwide folk religion in which Seven Strengths (we call them Virtues) eternally battle Seven Possessions (Deadly Sins) for the hearts and souls of men. Five of these are identical to our own; he has somewhat changed the other two. I call it clever because the Seven Deadly Sins turned up everywhere, figuratively and literally, in the fifteenth century; they’re indelibly associated with the period.
-alga
p.s. Nick, if you need more on this, let me know.