Looking for a documentary

I ordered “When Weather Changed History” thinking that it had the episode on The Great Chicago Fire – but it doesn’t.  Anyone have an idea of something I could find on Netflix or Amazon Instant video that would be good to watch on this subject.  (Or if you know where I could find this specific episode on line, like youtube or something).  If not we’ll just skip it – but WWCH was SO good.  So disappointed that we don’t have it to watch!