–Georgia Tech has an online gallery & text of Edward Emerson Barnard’s book A Photographic Atlas of Selected Regions of the Milky Way, published 1927. Check out Plate No. 5, a Nebulous Region in Taurus or Plate No. 14, Dark Lanes in Ophiucus. Aside from the photos, you can also access images of the text and the various hand-drafted charts, like this one for the Nebulous Region in Taursus. So much information, but such elegance.