This, via BoingBoing:
Mel Kadel & Travis Millard found - in the trash bin at a flea market - a salesman's dummy of The Conspiracy by Robert Baker and John Emerson (Emerson co-wrote the play, Gentlemen Prefer Blondes with his wife, Anita Loos). This copy, however, has many accomplished sketches and cartoons on the blank pages. Salesman's dummies, you may recall, usually included the first few pages of a book in a sample binding, with the bulk of the book left blank, to suggest the final size. Book salesmen took them around to bookstores and sometimes door to door to drum up sales.
Anyone recognize the artist?