Loeb Classical Library
Greek texts:  Shelved with Loeb Classical Library in Perkins Reference; also Lilly Thomas Room at 880.8 L825
Latin texts: Shelved with Loeb Classical Library in Perkins Reference; also Lilly Thomas Room at 870.8 L825
Perkins Reference has a complete set of the Loeb editions, the well-known small red and green volumes with Greek or Latin on one page, and the English translation facing it.  Most important ancient texts, historical and literary, appear in the Loeb editions.  They are arranged alphabetically by ancient author. A circulating copy of each volume is available in the Perkins stacks, and can be located through the catalog. 

Thesaurus Linguae Graecae (TLG)
and  Thesaurus Linguae Graecae canon of Greek authors and works, ed. L. Berkowitz and K. Squitier. New York: Oxford University Press, 1990.  Perkins Reference --- PA3051 .B475 1990.
TLG is an electronic concordance of  texts in Greek from Homer (8th c. B.C.) to the 6th c. C.E., supplemented by historiographical, lexicographical and scholastic texts from 600 C.E. to 1453 C.E.  It is keyword searchable as well as browsable. There is important information about installing Greek fonts available at the site.  The accompanying print volume is a register of texts included in the database.