New York: HarperPrism. (1996.) dj. SIGNED hardcover - "It turned up in a North Dakota wheat field: a triangle, like a shark's fin, sticking up from the black loam. Tom Lasker did what any farmer would have done. He dug it up...A forty two foot sailboat, complete with masts, sails, and a cabin with a microwave overn...made out of a material with an impossible attomic number" - and then another structure is found - a doorway to another world. SIGNED on the title page. 1997 Nebula Finalist for Best Novel. 303 pp. Wraparound dust jacket art by Jim Burns. ISBN: 0-06-1052078.