In grade school, Americans are told a very basic story of Roanoke colony. A group of colonists arrive in the New World and establish the colony. The first American of English descent is born there: Virginia Dare. Due to England's war with Spain, supply ships fail to make it to the colony for some time, and when the colony's founder John White finally returns, all the people have vanished. There is no note, except for the word "Croatoan" carved in a post. White, Dare's grandfather, has lost his colony.
My question is, what primary sources do we have about the colony other than the physical post with the engraved word?