Notes
First published as a serial in The Magazine of Fantasy and Science Fiction in 1956.

Publisher's Blurb
Crossed in business and then in love, genius-inventor Dan Davis suddenly finds the attractions of suspended animation irresistible. So the Long Sleep, and 30 years later, Dan wakes up in the 21st century. He finds the world very much to his liking. But he also finds that his robot inventions (going by the names of Eager Beaver, Drafting Dan and Building Bill) have been mass produced during his absence and, inexplicably, patented in his own name. Desperate to discover how this could have happened, he manages to space jump back into 1970....

Funny and affectionate, fast and slick, The Door Into Summer has a hugely engaging and involved plot which handles brilliantly the subtleties of time paradox.

Born in Kansas City in 1907, ROBERT A. HEINLEIN took up writing when he was invalided out of the US Navy. His first story was published in 1939 and his novel, Stranger in a Strange Land, became a campus cult novel of the 1960s. He lives in California and has spent a great deal of his life travelling all over the world.