Bentley Historical Library. “A Historical Tour of the University of Michigan Campus.” Bentley Historical Library. Accessed July 15, 2016. http://bentley.umich.edu/exhibits/campus_tour/chronology.php.
Bidlack, Russell E. “The University of Michigan General Library, a History of its Beginnings, 1837-1852.” PhD diss., University of Michigan, 1954.
Briggs, Asa. A History of Longmans and their Books, 1724-1990: Longevity in Publishing. London: British Library; New Castle, DE: Oak Knoll Press, 2008.
Dupree, A. Hunter. Asa Gray, 1810-1888. Cambridge, Mass.: Belknap Press of Harvard University Press, 1959.
Governor Stevens T. Mason to Professor Asa Gray, New York, October 31, 1838, Box 1, Stevens Thomson Mason Papers 1827-1842. Bentley Historical Library, University of Michigan.
Gray, Asa and Jane (Loring) Gray. Letters of Asa Gray. Boston: Houghton, Mifflin and Company, 1893.
Koch, Theodore W. Handbook of the Libraries of the University of Michigan. Ann Arbor: George Wahr, 1910.
Régnier, Christian. “Jean-Baptiste Baillière, témoin et acteur de l’influence internationale de la médecine française,” in J.-B. Baillière et fils, éditeurs de medicine, ed. Danielle Gourevitch et Jean-François Vincent. Paris: De Boccard Édition-Diffusion Bibliothèque Interuniversitaire de Médecine et d’Odontologie, 2006.
“The University of Michigan Libraries.” The University of Michigan, 1817-2017. Accessed July 15, 2016. http://um2017.org/2017_Website/Libraries.html.
Website background image: Letter from Asa Gray to Doctor Torrey, Lyons, Wednesday Evening, April 7, 1839 (edited photostat copy), Box 2, Russell E. Bidlack Papers circa 1940s-2003. Bentley Historical Library, University of Michigan.