In her own words...
My first lithograph adventure has become a book. An album with seven perils in it. Because to the seven deadly sins I preferred the seven spectral perils, life being more perilous than sinful. The writer, a good judge of both, naturally agreed. You might say that these interrogate the stone. And the stone, like an oracle, answered sometimes with effects never possible to achieve with other materials. The book's cover was also a lithograph printed on a blue paper that, alas, soon discolored.
–from Dorothea Tanning: Hail Delirium! A Catalogue Raisonné of the Artist’s Illustrated Books and Prints, 1942-1991, New York: The New York Public Library, 1992, p. 89.