Mann, Al: The Seven Seals ©1981 Al Mann Softcover, comb-bound, 8.5x11"

Image courtesy eBay seller RaolsonMagic

Comments: Gimmicked envelopes to add a prediction or read the contents.

Contents (from eBay description, numbers are not page numbers):

1 The Talt Move
2 The Hidden Gate
3 Open Sesame
4 The Specter
5 Spirits
6 The Seal Of Proteus
7 The Headline Prediction
8 The Great Dollar Bill Caper
9 Prediction Nugget
10 The Wrecking Crew
11 The Combination Pad Lock Mystery