For the most part, material for the study of classical antiquity is located in the LC classes PA (Classical Philology and Literature), and DE, DF and DG (for general Mediterranean, Greek and Roman history respectively).
Editions of classical works in the original languages are classified under call numbers beginning with PA, with some exceptions. Translations of classical literary works (poetry and drama) are classified under PA and G; however, translations into English of nonliterary works (e.g., history, philosophy and geography) are usually classified according to their subject matter—translations of Plato and Aristotle will be in the Bs. Classifications of commentaries and secondary literature on such works is a bit less consistent.
D51–90 Ancient History (General)
DA145–147 Roman Britain
DC62–63 Roman Gaul
DE The Greco-Roman World
DE46–73 Culture and Civilization
DF1–500 Ancient Greece (to c. 323 A.D.)
DF12 Sources & Documents
DF75–135 Civilization & Culture
DF220–241 By Period
DF251–289 Local History
DG1–399 Ancient Italy, Rome to 476 A.D.
DG42–70 Local and Regional History
DG61–69 City of Rome
DG75–190 Civilization & Culture
DG221–365 History by Period
DS54.3 Ancient Cyprus
DS71–75 Ancient Iraq to 638 A.D.
DS96 Ancient Syria, including the Seleucids
DS111–123 Ancient Israel
DS275–287 Iran to 651 AD
DT57–93 Ancient Egypt, including the Ptolemies (DT92)