Historical U.S. Tax Statistics Now Available in Wolfram|Alpha

Hat tip to ResourceShelf for calling attention to the availability of IRS-sourced historical tax statistics in Wolfram|Alpha. About C. Allan Joyce's Wolfram|Alpha Blog annoucement, the ResourceShelf writes that "the blog post contains what appears to be all the data you need to get a basic understanding of what’s available short of hiring a C.P.A. or finance professor. Make sure to give it a read." [JH]