4 books
A Treatise on the Law of the Customs
The Executive Departments of the United States Government; Their Organization, Duties, Etc
The Executive Departments of the United States at Washington; A Comprehensive View of the Powers, Functions, and Duties of the Heads of Departmtnes, Bureaus, and Divisions at Washington, as Prescribed by Law and Regulations Together with a Description in Detai
The Executive Departments of the United States at Washington