Ancestry.com
UK, Articles of Clerkship, 1756-1874
Ancestry.com
Court of King's Bench: Plea Side: Affidavits of Due Execution of Articles of Clerkship, Series I, II, III (KB 105-107). The National Archives, Kew, Richmond, Surrey.
Registers of Articles of Clerkship and Affidavits of Due Execution (CP 71). The National Archives, Kew, Richmond, Surrey.