During the war, Portugal was the second largest recipient of Nazi gold, after Switzerland. ... "Nazi Gold: The Merkers Mine Treasure" in Quarterly of the National Archives and Records Administration, Prologue Page, Spring 1999, vol. 31, no. 1; Infield, Glenn (1981). The Secrets of the SS (reissued, 1994 ed.). New York: Stein and Day. p. 288.