Edward Drinker Cope papers (HC.MC.956), Quaker & Special Collections, Haverford College, Haverford, PA.
Edward Drinker Cope papers (HC.MC.956), Quaker & Special Collections, Haverford College, Haverford, PA. https://archives.tricolib.brynmawr.edu//repositories/5/resources/386 Accessed February 01, 2025.
