Judge Doolittle was a delegate to, and president of, the national union convention at Philadelphia.

The evidence

• “During the summer recess of 1865, as a member of a special committee of the senate, he visited the Indian tribes west of the Mississippi. He was a delegate to the national union convention held at Philadelphia in 1856, was its president, and took an active part in its proceedings. At the close of his career in the senate of the United States, Judge Doolittle assumed the practice of the law in Chicago, where he continued for many years.”

  1908-brown-rock-county/32-courts-and-legal-profession.md, Vol. 2, PDF p. 218 / book p. 721

  Brown, William Fiske, editor. Rock County, Wisconsin: A New History of Its Cities, Villages, Towns, Citizens and Varied Interests, from the Earliest Times, Up to Date. Chicago: C. F. Cooper & Co., 1908. 2 vols. archive.org/details/rockcountywiscon01brow, archive.org/details/rockcountywiscon02brow.

  Grade A: Found on a page of one of our sources