Letter, 22 December 1876
Letter from S. W. Ford to B.J. Harrington regarding obituary of Billings.
Letter from Thomas R. Hubbard to B.J. Harrington.
Letter, 5 September 1876
Letter, 28 September 1876
Letter, 21 October 1876
Letter from A.S. Bickmore to B.J. Harrington.
Letter from S.W. Ford to B.J. Harrington.
Letter, 8 March 1877
Letter from H.A. Roebling to B.J. Harrington.