Transactions of the Natural History Society of Northumberland, Durham, and Newcastle-Upon Tyne, 1908 – 1911 … 21 July 2025
Transactions of the Natural History Society of Northumberland, Durham, and Newcastle-Upon Tyne, 1914 – 1916 … 6 July 2025
Transactions of the Natural History Society of Northumberland, Durham, and Newcastle-Upon Tyne, 1904 – 1907 … 29 June 2025
Transactions of the Natural History Society of Northumberland, Durham and Newcastle upon Tyne, 1964-1966 … 17 June 2025
Transactions of the Natural History Society of Northumberland, Durham, and Newcastle-Upon Tyne, 1966 -1967 … 12 June 2025
Transactions of the Natural History Society of Northumberland, Durham and Newcastle upon Tyne 1831 … 28 May 2025
Natural History Transactions of Northumberland, Durham and Newcastle upon Tyne, 1890 – 1894 … 7 May 2025