Lady Frieda Harris painted the deck between 1938 and 1943; it was first published in 1969, seven years after her death in 1962. The paintings remain in copyright until 2032 in the UK and EU and 2064 in the United States, so no card images or substitutes appear here.
The Emperor gives will a throne, a law and a lasting structure. He can be the power that protects and orders a realm, or the same power hardened into control.
A card carries more than one history. Its place in the tarot pack, Golden Dawn path, Rider–Waite–Smith reading and later variants are kept beside their own sources, since the same name can do different work in different decks.
The Book of Thoth remains in copyright. The catalogue therefore gives the deck's titles, ranks and numbering beside the Golden Dawn material it inherits, while citing Crowley by page without reproducing his text.
This deck numbers the card
IV.
This deck's book publishes no upright and reversed lists, so none are shown.
Its account of the card is cited below rather than reproduced.
What this deck does differently
The Thoth deck keeps the name The Emperor. Book T assigns the Emperor to Heh and Aries; Crowley's Thoth system instead assigns it to Tzaddi while retaining Aries. Book T titles it Sun of the Morning, Chief among the Mighty.
Aleister Crowley and Lady Frieda Harris, Thoth — Part Two: The Atu (Keys or Trumps).
A crowned ruler sits on a throne marked by rams, carrying the ankh-like sceptre and globe as signs of command, realization, and Aries-like authority.
A concise paraphrase of Waite's published explanation of the Pamela Colman Smith design, not a universal description of all historical decks.
Divinatory meaning
Modern
Upright, Waite associates The Emperor with stability, protection, realised authority, reason, power and will. Reversed, the card can indicate immaturity, obstruction or authority that has become either weakened or poorly exercised.
Waite himself warns that many fortune-telling allocations are artificial and arbitrary; these are historical Rider–Waite–Smith meanings, not assertions of fact.
Historical context and places where influential decks or occult systems differ.
Historical context
One of the twenty-one figured trumps plus the Fool found beside the four ordinary suits in historical tarot packs.
Museum history dates the earliest documentary references to the 1440s–1450s in northern Italy and identifies tarot's original use as a trick-taking game. The occult-Qabalistic reading is later.
Sources (1)
Before Fortune-Telling: The History and Structure of Tarot Cards, Metropolitan Museum of Art online article, 2016 — paragraphs 1–4