Henry Hartshorne manuscript (HC.MC.975.07.118), Quaker & Special Collections, Haverford College, Haverford, PA.
Henry Hartshorne manuscript (HC.MC.975.07.118), Quaker & Special Collections, Haverford College, Haverford, PA. https://archives.tricolib.brynmawr.edu//repositories/5/resources/1081 Accessed September 09, 2024.
