"The C.S.L.T.: containing views on Abraham Lincoln as expressed by Bismarck in 1878, from the recollections of Conrad von Bauditz Siem". Book by Conrad von Bauditz Siem, 1915.
Joseph Story (1851). “Commentaries on the Constitution of the United States: With a Preliminary Review of the Constitutional History of the Colonies and States, Before the Adoption of the Constitution”, p.296