Norwood Penrose Hallowell autograph album (HCS.003.053), Quaker & Special Collections, Haverford College, Haverford, PA.
Norwood Penrose Hallowell autograph album (HCS.003.053), Quaker & Special Collections, Haverford College, Haverford, PA. https://archives.tricolib.brynmawr.edu//repositories/5/resources/9501 Accessed April 19, 2024.
