Good question -- here are a few reasons:
Central LIbrary, Reference 4th-flr: DE5 .N48413 2002
An expansive encyclopedia of the ancient world. Presents the current state of traditional and new areas of research and brings together specialist knowledge from leading scholars from all over the world. A revised edition of Paulys Real-Encyclopädie der classischen Altertumswissenschaft, see below.
Central Library, Reference 4th-flr: DE5 .P33
Central Library, Reference 4th-flr: NX650 .M9 L494
The LIMC tries to present what we know of the iconography of Greek, Etruscan and Roman mythology as well as of the neighbouring Mediterranean cultures. Each of the illustrated figures of Greek, Etruscan and Roman mythology is discussed in alphabetic order, usually in an individual article of a uniform structure.
Central Library, Oversize 3rd-flr: BL727 .T44 2004
Central Library, Reference 6th-flr: ATLAS G1033 .B3 2000
In 99 full-color maps, the atlas recreates the entire world of the Greeks and Romans from the British Isles to the Indian subcontinent and deep into North Africa
Central Library, Reference 6th-flr Payne: Z7016 .J4 2006