The notarized transcript or diploma can then be sent to the Secretary of State's office for an Apostille or Certificate of Authority. Dear Ms. Avery and Mr. Constantino: Pursuant to 77 III. Admin.An Illinois notary public is authorized to perform notarial acts or "notarization" anywhere in the state. Mail to State of Illinois, P.O. Box 19138, Springfield, IL 62794-9138 or b. Specify the nature of the case, the lawyer's role, and any relevant case numbers or documents. Specify the nature of the case, the lawyer's role, and any relevant case numbers or documents. Authorization Letter Format Guidelines. But I do not give permission for any other use or re-disclosure of this information. To fill out this form click in the space after First Name. One document may satisfy more than one group.