Historic interpretations of the Pandora figure are rich enough to have offered Dora and Erwin Panofsky scope for monographic treatment. M. L. West writes that the story of Pandora and her jar is from a pre-Hesiodic myth, and that this explains the confusion and problems with Hesiod's version and its inconclusiveness. He writes that in earlier myths, Pandora was married to Prometheus, and cites the ancient Hesiodic "Catalogue of Women" as preserving this older tradition, and that the jar may have at one point contained only good things for humanity. He also writes that it may have been that Epimetheus and Pandora and their roles were transposed in the pre-Hesiodic myths, a "mythic inversion". He remarks that there is a curious correlation between Pandora being made out of earth in Hesiod's story, to what is in the "Bibliotheca" that Prometheus created man from water and earth. Hesiod's myth of Pandora's jar, then, could be an amalgam of many variant early myths.