Thomas Robert Malthus “An Essay on the Principle of Population, Or, a View of Its Past and Present Effects on Human Happiness: With an Inquiry Into Our Prospects Respecting the Future Removal Or Mitigation of the Evils which it Occasions”, Cambridge University Press
Andrew Jackson, Sam B. Smith, Harriet Fason Chappell Owsley, Harold D. Moser (1996). “The Papers of Andrew Jackson: 1821-1824”, p.399, Univ. of Tennessee Press