- Blackett-Ord family of Whitfield (addnl): papers 19th-20th cent (NRO 5290)
- Blyth United Reformed Church: records 1786-1977 (NRO 3352, NRO 5018, NRO 9146, Ref UR/P19)
- Gibson & Co, solicitors, Hexham: probate records c1800-1960 (NRO 5129)
- Riddell family of Cheesburn Grange: papers 17th-20th cent (NRO 5233)
- Ridley family, Viscounts Ridley of Blagdon (addnl): personal corresp and papers 1831-77 (NRO 5211)
- South Northumberland Coroner: records 1870-1983 (NRO 5276)
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