On or about September 1 Barnes & Noble Inc. will return to its roots as a chain of retail bookstores, following the spinoff of Barnes & Noble Education and the nearly-complete winding down of the Nook experiment. So we thought it would be interesting to turn back the reporting clock and see what’s happened to BN Retail — and other major book chains — since the beginning of the modern eBook Era, as a lens for how to view Barnes & Noble’s prospects going forward. Barnes & Noble first became a different company in 2009, when they bought the privately-held BN College. […]