2 Definitions

2 Definitions

2-1 Letter (39 CFR 310.1)

2-2 Message (39 CFR 310.1(a)(2) through (6))

2-3 Material Not Considered Letters (39 CFR 310.1(a)(7))

2-4 Post Routes (39 CFR 310.1(d))

2-5 Private Carriage (39 CFR 310.1(e))