Efforts were made to go to the root source for these collections. In other words, if you're seeking the American Memory Project, which was created and housed at the Library of Congress, then you'll find the link for the Library of Congress rather than the link for American Memory (although we included that link in the description of the Library of Congress listing). The root sources, in most cases, will lead you to collections that are too numerous to list here. In fact, it would be impossible to list all sources and we know we may have missed some favorites.