Series III. Imposts and Exports contain account books, records, and inspectors’ records. Subseries A. Returns of Merchandise includes three account books documenting the cargoes of individual ships and loose records from the years 1849-1850. Subseries B. Imposts contains records of duties paid on imported goods. Subseries C. Exports contains loose records and two account books detailing amounts paid on exports. Subseries D. Other contains one volume and two folders of "Inspector's Returns," one volume containing the work activity for a number of inspectors, one folder of the schedules of goods, and one folder of completed forms for duties paid.