The Hesiod poem besides Works and Days that mentions Pandora is Theogony. Theogony is a genealogical account of the gods and their origins, while Works and Days gives the fuller narrative of Pandora’s creation and the container.
The two poems are traditionally attributed to Hesiod and are major sources for early Greek mythology. Theogony refers to the creation of woman in the context of Zeus’s conflict with Prometheus, but it does not provide the same extended sequence of divine gifts and released evils found in Works and Days.
A common mistake is to attribute every detail of the Pandora story to Theogony. The most familiar version—including the opening of the container and the fate of hope—is chiefly associated with Works and Days. Theogony is important because it shows that Pandora’s myth was present in Hesiodic tradition across more than one poem.