40. Robert Paquette, "The Everett–Del Monte Connection: A Study in the International Politics of Slavery," Diplomatic History 11 (Winter 1987), 1–22; Edmund P. Gaines to Calhoun, May 5, 1844, in Wilson, Calhoun Papers 18:440–441, and Calhoun to William King, August 12, 1844, ibid. 19:568, 578.