George Fitzhugh, Sociology for the South on the Failure of Free Society (Richmond, Va., 1854), ch. V; William J. Grayson, «The Hireling and the Slave» (1854), in Selected Poems by William J. Grayson, comp. Mrs. William Armstrong (New York and Washington, D.C., 1907); By a White Republican, «Negros and Slavery in the United States», Fraser’s Magazine (London, February 1863), pp. 192 et seq.
