According to wikipedia there are 4 main Egyptian Creation Myths. These appear to be:
Ogdoad creaton myth of Hermopolis
Creation myth of Atum from Heliopolis
Creation myth of Ptah from Memphis
Creation myth of Amun from Thebes
I am planning to answer a question over at the Biblical Hermeneutics Q&A site, and while I have a general overview of these myths I can't seem to find the name of a definitive, Canonical source for these myths. Does such a thing even exist? If not, why? Is this information collected over a number of references and stories or from artwork for example?
In contrast, the Babylonian creation myths sources seem to be very easy to locate and I am wondering why there is a disparity.