Billington, Ray A. 'Anti-Catholic Propaganda and the Home Missionary Movement, 1800–1860' The Mississippi Valley Historical Review, Vol. 22, No. 3, (December, 1935), pp. 361–384. Published by Organization of American Historians. Jstor.org
Curran, Thomas J. International Migration Digest, Vol. 3, No. 1, (Spring, 1966), pp. 15–25 Published by The Center for Migration Studies of New York, Inc. Jstor.org
According to Turkish PTT e-telegraph page history section, the Ottoman ruler was the first head of state to award a medal to Morse and it was issued after the demonstration in Istanbul.
si.edu
historywired.si.edu
“Morse's Original Telegraph”. National Museum of American History, Smithsonian Institution. 2008年6月4日閲覧。
From An Argument on the Ethical Position of Slavery in the social system, and its relation to the politics of the day (New York, Papers from the Society for the Diffusion of Political Knowledge, no. 12, 1863) in Slavery Pamphlets # 60, Beinecke Rare Book and Manuscript library, Yale University. Quoted in "Yale, Slavery, & Abolition," an online report on Yale honorees, at Yaleslavery.org
