The Justice Manual (JM), formerly The United States Attorneys’ Manual (with hat tip to William Statsky)

https://www.justice.gov/jm/justice-manual

This is the current and official copy of the Justice Manual (JM). The JM was previously known as the United States Attorneys’ Manual (USAM). It was comprehensively revised and renamed in 2018. Sections may be updated periodically. In general, the date of last revision will be noted at the end of each section. For prior versions of the USAM, visit the USAM Archive.

Take your time with this one. There is a lot of information to digest. -CCE