Book Bratton, Mark; (2011)
The Complete Guide to the Herschel Objects: Sir William Herschel's Star Clusters, Nebulae, and Galaxies

Article Hoskin, Michael; (2008)
Nebulae, Star Clusters and the Milky Way: From Galileo to William Herschel

Chapter Smith, Robert W.; (2014)
The “Great Plan of the Visible Universe”: William Huggins, Evolutionary Naturalism and the Nature of the Nebulae

Article Brémond, Alain G.; (2009)
V. M. Slipher's Discovery of the Rotation of Spiral Nebulae and the Controversy with Bertil Lindblad

Article Smith, Robert W.; (2009)
Beyond the Galaxy: The Development of Extragalactic Astronomy 1885--1965, Part 2

Article Helge Kragh; (2024)
Nebulae or galaxies? The history of a change in astronomical terminology

Article Hoskin, Michael; (2011)
William Herschel and the Nebulae, Part 2: 1785--1818

Article Hoskin, Michael; (2014)
William Herschel and the Planetary Nebulae

Article Hoskin, Michael; (2005)
Unfinished Business: William Herschel's Sweeps for Nebulae

Article Hoskin, Michael; (2011)
William Herschel and the Nebulae, Part 1: 1774--1784

Article Paul, E. Robert; (1981)
The death of a research programme: Kapteyn and the Dutch astronomical community

Chapter Hoskin, Michael; (1977)
The English background to the cosmology of Wright and Herschel

Article Wolfgang Steinicke; (2016)
William Herschel's 'Hole in the Sky' and the discovery of dark nebulae

Book Hoskin, Michael A.; (2011)
Discoverers of the Universe: William and Caroline Herschel

Book Hoskin, Michael A.; (2007)
The Herschels of Hanover

Book Becker, Barbara J.; (2011)
Unravelling Starlight: William and Margaret Huggins and the Rise of the New Astronomy

Article Latusseck, Arndt; (2008)
William Herschel's Fifty-two Fields of Extensive Diffuse Nebulosity: A Revision

Book Clifford J. Cunningham; (2018)
The Scientific Legacy of William Herschel

Chapter Bok, Bart J.; (1974)
Harlow Shapley and the discovery of the center of our galaxy

Chapter Wolfschmidt, Gudrun; (1994)
Die Grosse Debatte: “Big Galaxy” oder “Island Universe”?