Double Star By Heinlein, Robert A. Books / Paperback Fiction › Sci-Fi & Fantasy Publisher: Signet, January 1956 Price $15.40 Free Shipping Send to a friend Used - Good Good condition. (Space, Science Fiction) A copy that has been read but remains intact. May contain markings such as bookplates, stamps, limited notes and highlighting, or a few light stains. $15.40 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.