I am going to nominate
The Greater Trumps by Charles S. W. Williams, a neglected genius who was a close friend of and influence on C.S. Lewis. Happily, a brilliant and even-handed biography of Williams is resurrecting the reputation and re-evaluation of this remarkable writer.
He wrote seven novels, six of which fall within our time period. The first five were written in a sustained rush of inspiration and I've decided to choose
The Greater Trumps the last and best of this first sequence. Written in 1932 and drawing on Williams's interest in mysticism, the book centers around the ancient Tarot set. The images of this deck were a perfect focus for the imagination of Charles Williams who was able to transfigure their already powerful iconic meanings into transcendental images of profound spirituality. To the deck itself he adds a strange board with the images represented by moving figures based on those in the deck. Throughout, Williams links the desires, actions, decisions, and personalities of various characters to their equivalents in the 22 cards that form “The Greater Trumps”.
It is available as an ebook download here:
http://www.amazon.co.uk/Greater-Trum...al-text&sr=8-5
and here:
http://www.amazon.com/Greater-Trumps...arles+williams
In Australia or Canada it could well be available in the public domain but the kindle editions above are quite reasonably priced. PB copies are quite inexpensive.