Letters written by Cole to Robert Underwood Johnson. These letters cover the period Cole was in Europe making engravings of great European paintings for a series which appeared in Johnson's CENTURY magazine. There are also letters from Cole to Melvin Loos, relating to the printing of Cole's engravings of paintings and portraits. Also, 250 engravings by Cole; and letters from Cole to William Kimberley Palmer, written during Cole's sojourn abroad.