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, 1950-1953 … 7 July 2025
Transactions of the Natural History Society of Northumberland, Durham and Newcastle-upon-Tyne, 1951 … 23 June 2025
Transactions of the Natural History Society of Northumberland, Durham and Newcastle upon Tyne, 1957-59 … 27 May 2025
Transactions of the Natural History Society of Northumberland, Durham, and Newcastle-Upon Tyne, 1930 – 1945 … 26 April 2025