Letter from George Iles to B.J. Harrington, written from New York.
Letter from J.D. Dana to B.J. Harrington, written from New Haven (Conneticut).
Letter from H.L. Wells to B.J. Harrington, written from New Haven (Conneticut).
Letter from J.F. Kemp to B.J. Harrington, written from New York.
Letter from T.M Drown, written from South Bethlehem, Pennsylvania.
Letter from Geo. J. Brush to B.J. Harrington, written from New Haven (Conneticut).
Letter from Ira Reinsen to B.J. Harrington, written from Baltimore.
Letter from Frank T. Strutt, written from Ottawa. Letterhead of the Experimental Farm.
Letter from W.F. Ferrier to B.J. Harrington.
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.