Henry David Thoreau (2017). “HENRY DAVID THOREAU – The Man, The Philosopher & The Trailblazer (Illustrated): Biographies, Memoirs, Autobiographical Books & Personal Letters (Including Walden, A Week on the Concord and Merrimack Rivers, The Maine Woods, Cape Cod, A Yankee in Canada…)”, p.1352, e-artnow
Calvin Coolidge (1924). “Message of the President of the United States to the Congress at the Beginning of the Second Session of the Sixty-eighth Congress, December 3 1924”
"Full Transcript: President Obama Speaks Exclusively to George Stephanopoulos on 'This Week'". "This Week" with George Stephanopoulos, abcnews.go.com. September 15, 2013.
Jacob Neusner (1991). “The Twentieth Century Construction of "Judaism": Essays on the Religion of Torah in the History of Religion”, University of South Florida