Foundation series
In 1966, the "Foundation" trilogy beat several other science fiction and fantasy series to receive a special Hugo Award for "Best All-Time Series". The runners-up for the award were the "Barsoom series" by Edgar Rice Burroughs, the "Future History series" by Robert A. Heinlein, the "Lensman series" by Edward E. Smith and "The Lord of the Rings" by J. R. R. Tolkien. The Foundation series is still the only series so honored. Asimov himself wrote that he assumed the one-time award had been created to honor "The Lord of the Rings", and he was amazed when his work won.