I thought I might add to the mix, the first chapter of Lee Irwin's Book Gnostic Tarot: Mandalas for spiritual Transformation
It is an enjoyable and thorough dance through the early roots of Tarot, the esoteric history, and the decks of the last 100 years or so. It also has an extensive bibliography.
How happy is he born and taught,
That serveth not another's will;
Whose armour is his honest thought,
And simple truth his utmost skill! Sir Henry Wotton