1. Commerce. Comparative statement, foreign commerce of United States ports by States (in cargo tons of 2,240 pounds), calendar years 1934 and 1935; [prepared in] Div. of Shipping Research. Bookmark Corporate/Agency Authors: Shipping Board Bureau and Commerce Department Publisher: Shipping Board Bureau Date: [July 10, 1936.] SuDoc number: C 27.9/2:935/2