Here's a story about the Hag at the Smithsonian from Fox News. He presented the museum with articles belonging to his family, which was one of those who moved from Oklahoma to California in the Thirties.
By the way, for a debunking of the Dust Bowl myth, check out this article by Keith Windschuttle. Windschuttle has done some other debunking of interest, including a lot of research regarding the Australian Aborigines; he rejects the idea that there was a deliberate white genocide of the natives in Australia and particularly in Tasmania. (Don't argue with me about this; argue with him.)