On July 18, 1874, Lewis Carroll was on a morning walk when a sentence popped into his head: “For the Snark was a Boojum, you see.” That thought led to one of the greatest works of English literature that you’ve never heard of. It had been ten years since Alice’s Adventures In Wonderland had been published to worldwide acclaim, and three years since Through The Looking Glass, And What Alice Found There was embraced as a worthy sequel. The two books were immediately hailed as children’s classics, found in every library, reprinted frequently, read aloud to children everywhere. Lewis Carroll...