Titre de la couverture. -- "Proofs of forthcoming book with the compliments of MacMillan of Canada. Price, probaly $9.95 [sic]. Publication date: probably November, 1969. These are unrevised proofs and are confidential. Please do not quote for publication until verified with published book. The MacMillan Company of Canada Limited per K.E. Andrews". -- Donateur: Louis Melzack.