Letter from Alfred Clarke to B.J. Harrington, written from New York.
Letter from R.W. Raymond to B.J. Harrington, written from New York.
Letter from S. Braeunlich of the Scientific Publishing Company to B.J. Harrington, written from New York. Letter regarding a French edition of Dr. Hunt's Systematic Mineralogy.
Letter from J.F. Kemp to B.J. Harrington, written from New York.
Letter from S. W. Ford to B.J. Harrington regarding obituary of Billings.
Letter from H.A. Roebling to B.J. Harrington.
Letter from W.J. Rohrbeck to B.J. Harrington, written from New York.