Bell, W. J., Jr., & Smith, M. D. (1966). Guide to the archives and manuscript collections of the American Philosophical Society. Philadelphia [Pa.]: American Philospohical Society.

Bell, Whitfield J., Jr., and Murphy D. Smith. Guide to the Archives and Manuscript Collections of the American Philosophical Society. Philadelphia [Pa.]: American Philospohical Society, 1966.

Bell, Whitfield J., Jr., and Murphy D. Smith. Guide to the Archives and Manuscript Collections of the American Philosophical Society. Philadelphia [Pa.]: American Philospohical Society, 1966.