The Age of Innocence
Edith Wharton's Old New York, and what its manners cost.
90 cryptograms drawn from it, every one by Edith Wharton.
How hard they are
31 easy, 39 medium and 20 hard, graded by the model described in our guide to solving cryptograms.
They average 72.5 letters over 19 distinct ones, with 4.1 letters appearing exactly once.