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WORKS ABOUT - Ruggles, Edward
Rawson, A. L.. "A Bygone Bohemia." Frank Leslie's Popular Monthly. (1896-1-1).
Allen, Gay Wilson. The Solitary Singer: A Critical Biography of Walt Whitman. New York: MacMillan. (1955-1-1).
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Whitman, Walt. "Letter to Thomas Jefferson Whitman, January 30, 1865." Walt Whitman: The Correspondence. New York: New York University Press. (1961-1-1).
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