| Sources |
- [S1447] _Births, Deaths and Marriages, NSW, Douglas B Allsopp; Birth; Index; 16586; 1901; St Leonards.
- [S962] Military: DVA Nominal Roll, Viewed; 12 February 2022; Douglas Bruce Allsopp.
- [S1442] _Births, Deaths and Marriages, Victoria, Douglas Bruce Allsopp; Death; Index; 19394; 1980; Mordialloc.
- [S1010] The Ryerson Index, The Age (Melbourne); Death Notice; Douglas Bruce Allsopp; 18 August 1980; 7 November 2025.
- [S1446] _Births, Deaths and Marriages, Western Australia, Ernest Edward Jessie Allsopp + Augusta Charlotte Boyd; Marriage; Index; 1015; 1899; Perth.
- [S1442] _Births, Deaths and Marriages, Victoria, Douglas Bruce Allsopp + Lilian Hazel Smedley; Marriage; Index; 9123; 1944.
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