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 O.D. Allen to B.J. Harrington, written from New Haven (Conneticut).
Letter from Geo. J. Brush to B.J. Harrington, written from New Haven (Conneticut).
Letter from E.S. Dana to B.J. Harrington.
Letter from E.S. Dana to B.J. Harrington.
Letter from F. Adams to B.J. Harrington, written from New Haven (Conneticut).
Letter from Frank Adams to B.J. Harrington.