1. Commerce. Water borne foreign commerce of United States, fiscal year 1930; [prepared in] Bureau of Research. Bookmark Corporate/Agency Authors: Shipping Board Publisher: Shipping Board Date: 1931 SuDoc number: SB 7.5/216:930
2. Commerce. Water borne foreign commerce of United States, fiscal year 1929; [prepared in] Bureau of Research, Maritime Records Division. Bookmark Corporate/Agency Authors: Shipping Board Publisher: Shipping Board Date: 1930 SuDoc number: SB 7.5/216:929