Letter from James D. Dana, 1881
Letter from George J. Brush of the Sheffield Scientific School of Yale College.
Letter from O.D. Allen to B.J. Harrington, written from New Haven (Conneticut).
Letter from J.D. Dana to B.J. Harrington, written from New Haven (Conneticut).
Letter from D.C. Eaton to B.J. Harrington thanking him for a specimen.
Letter from L. Stadtmuller to B.J. Harrington, written from New Haven (Conneticut).
Letter from E.S. Dana to B.J. Harrington, written from New Haven (Conneticut).
Letter from H.L. Wells to B.J. Harrington, written from New Haven (Conneticut).
Letter from S.L. Penfield to B.J. Harrington, written from New Haven (Conneticut).
Letter from George Brush to B.J. Harrington.