Letter from Alfred Clarke 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 S. W. Ford to B.J. Harrington regarding obituary of Billings.
Letter, 1 September 1888
Letter, 1 February 1883
Advertising postcard from F. Kaldenberg Co. to B.J. Harrington offering specimens of amber with antedeluvian insects.