A good D&D campaign is imaginative and creative. Sometimes a little research is useful to improve a dungeon, flesh out a scenario, and provide inspiration for a campaign. Books on folklore, mythology, fairy tales, bestiaries, and knightly legends can often help the DM fill in important details of a campaign, but fictional tales and fantasy novels usually provide the best sources of inspiration. The following list includes some books which might prove useful. A title list followed by “et al.” means that the author has written more fantasy titles than those which can be listed in the limited space available. Note that some books listed as “non-fiction" are about myths or legends, but are labeled as non-fiction because they are not on the fiction shelves of the library or bookstore.
Alexander, Lloyd — The Book of Three; Black Cauldron; Castle of Llyr, et al.
Baum, L. Frank — The Wizard of Oz; The Emerald City of Oz; The Land of Oz, et al.
Bellairs, John — The Face In the Frost; The House Without a Clock on Its Walls; The Figure In the Shadows, et al.
Burroughs, Edgar Rice — A Princess of Mars; At the Earth’s Core; Tarzan of the Apes, et al.
Carroll, Lewis — Alice’s Adventures in Wonderland; Through the Looking Glass
Garner, Alan — Elidor, The Weirdstone of Brisingamen; The Moon of Gomrath, et al.
Le Guin, Ursula K. — A Wizard of Earthsea; The Tombs of Atuan; The Farthest Shore, et al.
Lewis, C. S. — The Lion, The Witch, and the Wardrobe; Prince Caspian; The Voyage of the “Dawn Treader”, et al.
Barber, Richard — A Companion to World Mythology
Buehr, Walter — Chivalry and the Mailed Knight
Coolidge, Olivia — Greek Myths; The Trojan War; Legends of the North
d’Aulaire, Ingri and Edgar Parin — Norse Gods and Giants; Trolls
Hazeltine, Alice — Hero Tales from Many Lands
Hillyer, Virgil — Young People’s Story of the Ancient World: Prehistory — 500 B.C.
Jacobs, Joseph — English Folk and Fairy Tales
Macauley, David — Castles
McHargue, Georgess — The Beasts of Never: A History Natural and Unnatural of Monsters, Mythical and Magical; The Impossible People
Renault, Mary — The Lion in the Gateway
Sellow, Catherine F. — Adventures with the Giants
Sutcliff, Rosemary — Tristram and Iseult
Williams, Jay — Life in the Middle Ages
Winer, Bart — Life in the Ancient World
Anderson, Poul — Three Hearts and Three Lions; The Broken Sword; The Merman’s Children, et al.
Anthony, Piers — A Spell for Chameleon; The Source of Magic; Castle Roogna
Asprin, Robert — Another Fine Myth
Brackett, Leigh — The Coming of the Terrans; The Secret of Sinharat; People of the Talisman, et al.
Campbell, J. Ramsey —Demons by Daylight
Davidson, Avram — The Island Under the Earth; Ursus of Ultima Thule; The Phoenix in the Mirror, et al.
de Camp, L. Sprague — The Fallible Fiend; The Goblin Tower, et al.
de Camp, L. Sprague and Pratt, Fletcher — The Incomplete Enchanter; Land of Unreason, et al.
Dunsany, Lord — Over the Hills and Far Away; Book of Wonder; The King of Elfland’s Daughter, et al.
Eddison, E. R. — The Worm Ouroboros
Eisenstein, Phyllis — Born to Exile; Sorcerer’s Son
Farmer, Phillip Jose — The Gates of Creation; The Maker of Universes; A Private Cosmos, et al.
Finney, Charles G. — The Unholy City; The Circus of Dr. Lao
Heinlein, Robert A. — Glory Road
Howard, Robert E. — Conan; Red Nails; Pigeons from Hell
Lee, Tanith — Night’s Master; The Storm Lord; The Birthgrave, et al.
Leiber, Fritz — The Swords of Lankhmar; Swords Against Wizardry; Swords Against Death, et al.
Lovecraft, H. P. — The Doom that Came to Sarnath; The Dream Quest of Unknown Kadath; The Dunwich Honor
Merritt, A. E. — The Moon Pool; Dwellers in the Mirage; The Ship of Ishtar, et al.
Moorcock, Michael — The Stealer of Souls; The Knight of the Swords; Gloriana, et al.
Mundy, Talbot — Tros of Samothrace
Niven, Larry — The Flight of the Horse; The Magic Goes Away
Norton, Andre — Witch World; The Year of the Unicorn; The Crystal Gryphon, et al.
Offutt, Andrew — The Iron Lords; Shadows Out of Hell
Pratt, Fletcher — The Blue Star; The Well of the Unicorn
Smith, Clark Ashton — Xiccarph; Lost Worlds; Genius Loci
Stewart, Mary — The Crystal Cave; The Hollow Hills; The Last Enchantment
Stoker, Bram — Dracula
Swann, Thomas Burnett — Cry Silver Bells; The Tournament of the Thorns; Moondust, et al.
Tolkien. J. R. R. — The Hobbit; The Lord of the Rings (trilogy)
Vance, Jack — The Eyes of the Overworld; Dying Earth; The Dragon Masters, et al.
Wagner, Karl Edward — Bloodstone; Death Angel’s Shadow; Dark Crusade, et al.
White, Theodore H. — The Once and Future King
Zelazny, Roger — Jack of Shadows; Lord of Light; Nine Princes in Amber, et al.
Some additional authors of fantasy fiction are:
Beagle, Peter S.
Bok, Hannes
Cabell, James Branch
Carter, Lin
Cherryh, C. J.
Delany, Samuel R.
Fox, Gardner
Gaskell, Jane
Green, Roland
Haggard, H. Rider
Jakes, John
Kunz, Katherine
Lanier, Sterling
McCaffrey, Anne
McKillip, Patricia A.
Moore, C. L.
Myers, John Myers
Peake, Mervyn
Saberhagen, Fred
Walton, Evangeline
Wellman, Manly Wade
Williamson, Jack
Carter, Lin (ed.) — The Year’s Best Fantasy Stories (in several volumes); Flashing Swords (also in several volumes)
Offutt, Andrew (ed.) — Swords Against Darkness (in several volumes)
Borges, Jorge Luis — The Book of Imaginary Beings
Bullfinch, Thomas — Bullfinch’s Mythology: The Age of Fable, The Age of Chivalry
Funk and Wagnalls Standard Dictionary of Folklore, Mythology, and Legend