If a title has next to it, that title is available at Amazon.Com. Clicking on the book will take you to Amazon.Com's listing for the book and allow you to purchase it, if you so desire (doing so will help keep this site running for years to come).
Cotterell, Arthur. The MacMillan Illustrated Encyclopedia of Myths & Legends. Marshall Editions Limited (Simon & Schuster MacMillan): New York, 1989.
Turner, Patricia, and Charles Russell Coulter. Dictionary of Ancient Deities. Oxford University Press: New York, 2000.
Wilkinson, Philip. DK Illustrated Dictionary of Mythology. Dorling Kindersley Publishing Inc.: New York, 1998.
Grimal, Pierre. Penguin Dictionary of Classical Mythology. New York: Penguin Books, 1990. (Abridged Edition)
Grimal, Pierre. The Dictionary of Classical Mythology. Malden, MA: Blackwell Publishers Inc., 1996. (Complete Edition)
Rose, H. J.. A Handbook of Greek Mythology. New York: E. P. Dutton & Co., Inc., 1959.
Zimmerman, J.E. Dictionary of Classical Mythology. New York: Bantam Books (Harper & Row), 1964.
Clothing & Costumes:
Hope, Thomas. Costumes of the Greeks and Romans. New York: Dover Publications Inc., 1962.
Atchity, Kenneth J. (editor). The Classical Roman Reader. Oxford University Press: New York, 1997.
Lattimore, Richmond. Greek Lyrics. The University of Chicago Press, Chicago: 1960.
Trypanis, Constantine A., ed. The Penguin Book of Greek Verse. New York: Penguin Books, 1971.
Nakanishi, Akira. Writing Systems of the World: Alphabets, Syllabaries, Pictograms. Rutland, VT: Charles E. Tuttle Company, 1980.
Scott, Joseph and Lenore Scott. Egyptian Hieroglyphics for Everyone: An Introduction to the Writing of Ancient Egypt. Barnes & Noble Books: New York, 1968.
Each scholarly section of the realm has its own bibliography, so check out that page in the topic section you are interested in for additional and more specific resources.