This fonds documents the personal and professional activities of William Wilkinson. It includes incoming and outgoing correspondence; insurance policies; and receipts, bills, invoices, agreements, bonds, and affidavits relating to legal cases he handled as either a lawyer or a judge.

Also included are case files dating to the years he practised law as well as legal documents pertaining to cases heard in the Supreme Court of New Brunswick or in the County Courts of Gloucester, Kent, Northumberland, Restigouche, Westmorland, or York.

A few letters and legal documents pre-date Wilkinson's birth. They probably resulted from the activities of his business associates, Archibald Murchie or John M. Johnson.