Add the date of the document

Warning²Federal courts, Illinois courts22nd edition only

An archival citation gives the date of the document in a parenthetical in front of the “on file with” parenthetical, “n.d.” where it is not known.¹

1. 1R. 23.5 Date; B23 Archival Sources.
2. 2A warning: the form is usually wrong under the rule in note 1, and context can justify it.