Vintage 1988 Wff ‘N Proof Game of Modern Logic Thinking Game Complete Vinyl Case

Vintage 1988 Wff 'N Proof Game of Modern Logic Thinking Game Complete Vinyl Case Scarce vintage game. Includes the blue plastic binder, the softcover book, the cubes, and three individual sheets. The book has extremely fragile binding and has two loose pages. Actual item shown. Questions welcome.