H.G. Alexander's Natural History Diaries 1906-1913 and notebooks with lists of birds in districts of England and Wales, in districts of Scotland and in districts of Ireland, 1906-1919, MS. 15599/3, Box: 606651238. Bodleian Libraries.

H.G. Alexander's Natural History Diaries 1906-1913 and notebooks with lists of birds in districts of England and Wales, in districts of Scotland and in districts of Ireland, 1906-1919, MS. 15599/3, Box: 606651238. Bodleian Libraries. https://archives.bodleian.ox.ac.uk//repositories/2/archival_objects/157774 Accessed April 22, 2021.