Edward Drinker Cope notebooks (HC.MC.801.11.010), Quaker & Special Collections, Haverford College, Haverford, PA.
Edward Drinker Cope notebooks (HC.MC.801.11.010), Quaker & Special Collections, Haverford College, Haverford, PA. https://archives.tricolib.brynmawr.edu//repositories/5/resources/9825 Accessed December 20, 2024.
