The positions of Professor Barnard's dark objects are given here for equinox J2000.0. These positions will allow the reader to locate them on contemporary star maps, on photographs of the Milky Way, or visually in the sky. The angular size of these objects, if known, is given in arc minutes, as well as the Plate(s) on which the objects appear in this Atlas. There are 31 dark objects in Barnard's catalogue that do not appear on the 50 plates contained in this edition, although they are still provided in this listing.

As stated in the Addendum, during the editing of the 1927 edition of Barnard's Atlas, Frost and Calvert noted three objects from Barnard's list, Nos. 52, 131a, and 172, had been duplicated. This omission may have been in error and the corrections are presented. All of these omitted regions were found using Barnard's paper in the Astrophysical Journal January, 1919 (49, 1-23), where the positions provided are given in B1875.0 equinox. The Barnard catalogue numbers, positions, angular measurements, and descriptions are taken from this paper. The explanations following Professor Barnard's descriptions are those of this author.