L. Sprague de Camp SF Gateway Omnibus. Lest Darkness Fall, Rogue Queen, The Tritonian Ring

From the vaults of the SF Gateway, the most comprehensive digital library of classic SFF titles ever assembled, comes an ideal introduction to the varied work of author, editor and critic, L. Sprague de Camp. Although arguably best known for his continuation of Robert E. Howard's Conan stories, de Camp was an important figure in the formative period of modern SF, alongside the likes of Isaac Asimov and Robert A.
Heinlein. In a career spanning seven decades, he won the HUGO, WORLD FANTASY LIFE ACHIEVEMENT and SFWA GRAND MASTER AWARDs. This omnibus collects three previously out-of-print classics: LEST DARKNESS FALL, ROGUE QUEEN and THE TRITONIAN RING. Lest Darkness Fall:The Roman Empire had spread order, knowledge and civilisation throughout the ancient world. When Rome fell, the light of reason flickered out across the Empire.
The Dark Ages had begun; they would last a thousand years. Could a man from the 20th century prevent the fall of Rome? Rogue Queen:Decades before a certain five-year voyage, L. Sprague de Camp sent a spirited crew to a strange and distant world, where their meeting with its inhabitants created chaos in local politics, upset the balance of power and generally created the most entertaining havoc. The Tritonian Ring:The gods of Poseidonis - or Atlantis - were powerful and real.
Now they were determined to destroy the kingdom ruled by the father of Prince Vakar, the one man whose mind they could not read. The only way to save the kingdom was to discover that thing which the gods feared most.