Commentary
6 books available
An expository work that explains, glosses, and systematizes an earlier text. It preserves variant readings, resolves difficulties, and anchors practice and doctrine to authoritative sources.

Lesser Bundahishn
Anonymous
800-1200 CE
Persian, Zoroastrian

Denkard
Adurfarnbag ī Farruxzādān and Adurbad ī Emēdān
800-1000 CE
Persian, Zoroastrian

Shanhai Jing Commentaries
Guo Pu
300-600 CE
East Asian, Chinese

Derveni Papyrus
Anonymous
340-320 BCE
Greek

Commentary on the Aeneid
Servius
400 CE
Roman

Fulgentius' Mythologies
Fabius Planciades Fulgentius
500-600 CE
Roman