These resources will lead you to texts, images, and reference sources on the ancient world. Some are paid resources to which the libraries subscibe and require authentification off campus with Claremont Colleges ID.
"ancient greece and medicine" in the keyword field
Greek English Lexicon Part of The Perseus Digital Library.
Civilizations of the Ancient Near East Hon Ref/ DS 57 C55 1995 (volumes 1-4)
The Oxford Encylopedia of the Ancient Near East Hon Ref/DS 56 o9 1997 (volumes 1-5)
Brill's New Pauly Encylopedia of the Ancient World: Antiquity (Hon Ref/ DE5 N4813 2002, volumes 1-14) and Brill's New Pauly Enyclopedia of the Ancient World: Classical Traidtion (Hon Ref/ DE5 P33213 2006, volumes 1-4) are the English editions of one of the most important reference works in Ancient History The German version, Der Neue Pauly Enzyklopadie der Antike, can be found at Non Ref/ DE5 N48 1996 (volumes 1-16).
In addition to the many chronolgies that can be found on the internet, one might consult Brill's New Pauly Chronolgies of the Ancient World: Names, Dates and Dynasties, Hon Ref/DE5 N48136 2007, and the Chronology of the Ancient World by E.J. Bickerman, Hon Ref/ D 54.5 B5 1980.
There are also many historical atlases including The Atlas of the Greek and Roman World in Antiquity, Hon Ref/ G 1033 A84 1981, and The Cultural Atlas of Mesopotamia and the Ancient Near East, Hon Fef/DS 69.5 R63 1990.