The Secret Garden
Frances Hodgson Burnett's walled garden on the Yorkshire moor.
106 cryptograms drawn from it, every one by Frances Hodgson Burnett.
How hard they are
34 easy, 41 medium and 31 hard, graded by the model described in our guide to solving cryptograms.
They average 69.8 letters over 18.6 distinct ones, with 3.9 letters appearing exactly once.