. . . . . . . . . "Letter from the Secretary of State, transmitting an abstract of the number of seamen registered in the several collection districts of the United States for the years 1806 and 1807"@en . . . "Letter from the Secretary of State transmitting an abstract of the number of seamen registered in the several collection districts of the United States for the years 1806, and 1807"@en . . . . . . . .