U.S. and Nicaragua sign exchange Agreement, March 4, 1968, Release Number f-1183
United States. Department of the Treasury. "U.S. and Nicaragua sign exchange Agreement, March 4, 1968, Release Number f-1183," in United States. Department of the Treasury. "Volume 161," Press Releases of the United States Department of the Treasury (March 4, 1968 - June 3, 1968) : 6-7. https://fraser.stlouisfed.org/title/6111/item/587004/toc/540987 , accessed on June 24, 2024.