The Reference Desk is where you will find materials related to the work of the PRC. The sharing of this information, the Commission believes, will increase the overall knowledge and understanding of postal matters.

Title 39

Download Title 39

Rules of Practice

Download Rules of Practice

Mail Classification Schedule

The Mail Classification Schedule describes every product offered to the public by the US Postal Service and serves as a standard reference work when reviewing ongoing postal products. A draft working copy of the Mail Classification Schedule is available here. It is typically updated on a weekly basis in redline legislative format to represent the most current US Postal Service product offerings.Download Current Redline MCS