Transactions of the Natural History Society of Northumberland, Durham, and Newcastle-Upon Tyne, 1985 – 1991 … 22 July 2025
Natural History Transactions of Northumberland, Durham and Newcastle upon Tyne, 1890 – 1894 … 7 May 2025
Transactions of the Natural History Society of Northumberland, Durham, and Newcastle-Upon Tyne, 1972- 1981 … 7 May 2025