Dragons

Dragons.
Dragons Myths & Legends. Behold...the Dragons!
Dancing With Dragons : Invoke Their Ageless Wisdom & Power.
Dragon Tarotdeck.
Dragons: A Natural History.
The Discovery of Dragons.
The Dragon Tarot.
Legends of the Plumed Serpent: Biography of a Mexican  God.
Lord of the Dawn: Quetzalcoatl and the Tree of Life.
The Myth of Quetzalcoatl.
The Book of Dragons.

Centaurs

Centaurs and Amazons.
Centaurs of Many Lands.
Draw Fantasy : Dragons, Centaurs, and Other Mythological Characters.
The centaur.
The Centaur (Supernatural & Occult Fiction).

Medusa

Medusa (Monsters of Mythology).
Medusa: Solving the Mystery of the Gorgon.
Perseus.
Snake Dreamer.
Snake Hair: The Story of Medusa
The Deadly Power of Medusa.

Sirens

A Treasury of Mermaids : Mermaid Tales from Around the World.
From the Deep Waters : Maidens of Myth and Mystery.
Mermaid Tales from Around the World.
Mermaids Tales.
Mermaids : Nymphs of the Sea.
Sirens : Symbols of Seduction.
The Feejee Mermaid and Other Essays in Natural and Unnatural History.

Minotaur

The Minotaur/2 Audio Cassettes.
The Minotaur and the Golden Fleece.
Theseus : The King Who Killed the Minotaur/Cassettes (Chivers Children's Audio Books).
Labyrinth - History of the Maze.
Labyrinths: Their Mystery & Magic.
A Cretan Cycle : Fragments Unearthed from  Knossos.
Daedalus and Icarus.
Daedalus and the Minotaur (Galloway, Priscilla, Tales of Ancient Lands).
Hercules and the Maze of the Minotaur (Disney First  Readers).
Mazes and Labyrinths: Their History and  Development.
Sun Flight.
Theseus and the Minotaur.
The Labyrinth: Symbol of Fear, Rebirth, and  Liberation.
Walking a Sacred Path: Rediscovering the Labyrinth As a  Spiritual Tool.

Pegasus

Pegasus.
Pegasus : The Flying Horse.
Pegasus the Winged Horse.
The Flying Horse : The Story of Pegasus .

Other monsters from greek and celtic mythology

The Eyes of the Sphinx : The Newest Evidence of  Extraterrestrial Contact in Ancient Egypt.
Wonder Beasts : Tales and Lore of the Phoenix, the Griffin,  the Unicorn, and the Dragon.
Hydra and Kraken. Or, the Lore and Lure of Lake-Monsters and Sea-Serpents.
Dragons and Unicorns : A Natural History.

The Bestiary (Dramatic Supplement).
Bestiary: An Illuminated Alphabet of Medieval  Beasts.
Bestiary: A Book of Twenty-Six Fabulous  Beasts.
Bewildering Beasties (Dover Pictorial Archive  Series).
Curious and Fantastic Creatures (Dover Pictorial Archives).
Encyclopedia of Things That Never Were: Creatures, Places, and People.
Fabulous Beasts.
Hargreaves New Illustrated Bestiary.
Magickal, Mythical, Mystical Beasts: How to Invite Them  into Your Life.
Mythical and Fabulous Creatures: A Source Book and Research  Guide.
Mythical Beasts.
Mythical Birds & Beasts from Many Lands.
Olde Missus Milliwhistle's Book of Beneficial  Beasties.
The Bestiary (Dramatic Supplement).
The Book of Fabulous Beasts: A Treasury from Ancient Times to the Present.
Treasury of Fantastic and Mythological Creatures: 1087 Renderings from Historic Sources.
Animals in Celtic Life and Myth.
Mythical Monsters.
 

Art in ancient cultures

Art of Roman Britain .
Celtic Art: Symbols & Imagery | Miranda Green
Art and Myth in Ancient Greece | T.H. Carpenter
Art and Experience in Classical Greece | J.J. Pollitt
Greek Art | Nigel Spivey
Greek Art | John Boardman
Greek Sculpture: The Classical Period | John Boardman
A Handbook of Roman Art | edited by Martin Henig
Roman Art and Architecture | Mortimer Wheeler
Celtic Art: Symbols & Imagery

Classical greek and celtic mythology

The Iliad | translated by Robert Fitzgerald
The Odyssey| translated by  Robert Fitzgerald
Hesiod: Theogony, Works & Days,  Shield | translated by Apostolos N.  Athanassakis
The Homeric Hymns | translated  by Apostolos N. Athanassakis
Metamorphoses | translated by A. D. Melville
The Golden Ass: Or Metamorphoses | translated by E.J. Kenney
Dictionary of Celtic Mythology | Peter Berresford Ellis
Dictionary of Celtic Myth and Legend | Miranda Green
The Gods of the Celts | Miranda Green
Bulfinch's Mythology | Thomas  Bulfinch
The Complete Idiot's Guide to Classical  Mythology | Kevin Osborn
Mythology | Edith Hamilton
The Oxford Classical Dictionary | edited by Simon Hornblower and Antony Spawforth
Who's Who in Classical Mythology | Michael Grant and John Hazel