"Froth & Scum: Truth, Beauty, Goodness, and the Ax Murder in America's First Mass Medium", par Andie Tucher, Univ of North Carolina Press, [1].
Froth & Scum: Truth, Beauty, Goodness, and the Ax Murder in America's First Mass Medium Couverture Andie Tucher Univ of North Carolina Press, , page 12 [2].
(en) Richard Allen Schwarzlos, The Nation's Newsbrokers : The Formative Years : From Pretelegraph to 1865, Northwestern University Press, 1989 (ISBN978-0-8101-0818-9) [lire en ligne] p. 125