. "Letter from the postmaster general, to the chairman of the Committee on the Post Office and Post Roads, as to the expediency of authorizing the postmaster general to employ an armed guard, for the protection of the mails of the United States, on such mail routes, as he may deem necessary. : February 16, 1819. Printed by order of the Senate of the United States"@en . . . . . . . . "Letter from the postmaster general, to the chairman of the Committee on the Post Office and Post Roads, as to the expediency of authorizing the postmaster general to employ an armed guard, for the protection of the mails of the United States, on such mail routes, as he may deem necessary. February 16, 1819. Printed by order of the Senate of the United States"@en . . . . . . . . . "United States. Congress Senate." . .