Transactions of the Natural History Society of Northumberland, Durham, and Newcastle-Upon Tyne, 1913 … 30 June 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, 1964-1966 … 17 June 2025
Natural History Transactions of Northumberland, Durham and Newcastle upon Tyne, 1880 – 1889 … 17 May 2025