Letter from George J. Brush of the Sheffield Scientific School of Yale College.
Letter from D.C. Eaton to B.J. Harrington thanking him for a specimen.
Letter from E.S. Dana to B.J. Harrington.
Letter from E.S. Dana to B.J. Harrington.
Letter from George Brush 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.
Letter from Frank Adams 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 James D. Dana, 1881