1. Hastings, Lewis M. "Map of Cambridge." Map. Boston: W.A. Greenough & Co., 1895.
Digital Commonwealth2. Hayward, James. "A map of Cambridge, Mass." Map. Boston Mass.: Eddy's Lith., 1838.
Digital Commonwealth 3. Newspaper. Boston, Mass.: William Lloyd Garrison and Isaac Knapp, June 14, 1844. Digital Commonwealth
4. "The Liberator." Newspaper. Boston, Mass.: William Lloyd Garrison and Isaac Knapp, June 14, 1844.
Digital Commonwealth5. Harris, Thaddeus Mason, et al. A discourse delivered before the African Society in Boston, 15th of July, on the anniversary celebration of the abolition of the slave trade. Boston: Printed by Phelps and Farnham, 1822. Pdf. Retrieved from the Library of Congress5. "The Liberator."
6. Garrison, William Lloyd, and James Brown Yerrinton. "The liberator." Newspaper. Boston, Mass.: William Lloyd Garrison and Isaac Knapp, June 13, 1851. Digital Commonwealth, https://ark.digitalcommonwealth.org/ark:/50959/rf55zn63w
7. Christ Church, Cambridge MA. Photography by Kevin Grady/Harvard Radcliffe Institute.