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.