Vanity Fair
Thackeray's novel without a hero, and Becky Sharp.
283 cryptograms drawn from it, every one by William Makepeace Thackeray.
How hard they are
68 easy, 124 medium and 91 hard, graded by the model described in our guide to solving cryptograms.
They average 70.2 letters over 19 distinct ones, with 3.9 letters appearing exactly once.