This collection contains five letters and one biographical sketch collected by Margaret Underwood Ferguson. The correspondence between Margaret Underwood Ferguson and Clarence W. Alvord discusses submitting her father's personal papers to the Survey. The biographical sketch of her father, William H. Underwood, describes his life as a district attorney, a state senator, and a delegate to the Constitutional Convention in 1870. He also edited seventeen volumes of the Illinois Supreme Court Reports.
Margaret Underwood Ferguson loaned the correspondence and donated the biographical sketch in 1918.