Editore: Fantasy Press, Reading, Pennsylvania, 1947
Da: Columbus Rare Books, Columbus, OH, U.S.A.
Prima edizione
Condizione: Good. 1st. 1st. Hardcover. Good. Light stains on front and back cover. Light Foxing on first and last page - internal text clean. Early Heinlein essay on writing Speculative Fiction. 96 pages. Seller Inventory #5.