2024 39 CFR 3050.50 – Information pertaining to cost and service for flat-shaped mail

2023 39 CFR 3050.50 – Information pertaining to cost and service for flat-shaped mail

2022 39 CFR 3050.50 – Information pertaining to cost and service for flat-shaped mail

2021 39 CFR 3050.50 – Information pertaining to cost and service for flat-shaped mail

2020 39 CFR 3050.50 – Information pertaining to cost and service for flat-shaped mail