K. Edmondson,"Daniel Kirkwood: Dean of American Astronomers," Mercury Magazine (publication of the Astronomical Society of the Pacific), vol. 29, no. 3 (2000), pp. 26–33. J. Donald Fernie 1999, "The American Kepler," The New Scientist vol. 87, no. 5, pg. 398. References External links "Daniel Kirkwood papers, 1864-1895" finding aid for the collection at the Indiana University Archives, Bloomington 1814 births 1895 deaths American astronomers Planetary scientists Washington & Jefferson College faculty Indiana University faculty Presidents of the University of Delaware People from Harford County, Maryland