Abbreviate the issuing body's name

Warning²Federal courts, Illinois courts21st and 22nd editions

A newsletter's citation names the body that issues it, and that name is abbreviated with the case-name and geographic tables' own forms — not a private shortening of it.¹

1. 1R. 16.7.8 Newsletters and Other Noncommercially Distributed Periodicals. Tables: R. 15.1(e) Abbreviations; R. 15.1(d) Abbreviations; T6 Case Names and Institutional Authors in Citations; T10 Geographical Terms.
2. 2A warning: the form is usually wrong under the rule in note 1, and context can justify it.