Caswell visited Washington and listened to the debate in the Senate on the Kansas constitution.

The evidence

• “slavery had now become a national question. I visited Washington in March 1859 and listened to the debate in the senate. I was glad to hear the voice of Douglass raised against the adoption of the constitution which had been formed in Kansas.”

  1900-caswell-reminiscences/10-politics-and-congress.md, PDF pp. 3–27

  Caswell, Lucien Bonaparte. The Reminiscences of the Hon. L. B. Caswell. Written at Fort Atkinson, Wis., 1914–1916; four-column newspaper reprint, newspaper and date unidentified. University of Wisconsin-Madison Libraries.

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