Management Instruction FM-640-2023-1 - Postal Bulletin 22664 - Contents Handbooks Handbook EL-903 Revision: 2022-2025 Agreement between the Postal Service and the National Postal Mail Handlers Union Effecti..." /> Management Instruction FM-640-2023-1 - Postal Bulletin 22664 - Contents Handbooks Handbook EL-903 Revision: 2022-2025 Agreement between the Postal Service and the National Postal Mail Handlers Union Effecti..." />