I do not have a comprehensive list at hand, but there has been a long tradition here of composing songs in memory of disasters such as floods, fires and train wrecks ("The Wreck of the Old 97" for one), wars, infamous and not so famous murders and more. The Smithsonian Institution, in Washington, D.C., has a huge archive of such material. I am certain others can contribute specific online sites or publications to guide you. Good hunting!