United States. Department of the Treasury. "Customs Report on Vessel Entries, October 1, 1938," in United States. Department of the Treasury. "Volume 24," Press Releases of the United States Department of the Treasury (July 15, 1938 - October 17, 1938) : 499-502. https://fraser.stlouisfed.org/title/6111/item/586865/toc/567376 , accessed on May 7, 2024.