| Sources |
- [S811] Cemetery: WA Karrakatta, Application KC00066079.
- [S1446] _Births, Deaths and Marriages, Western Australia, Thelma Rose Ida Halliwell; Birth; Index; 5900204; 1908; Subiaco.
- [S907] Deaths: Sydney Morning Herald Death Index [COMPILED], Edith Mary Allsop.
- [S1446] _Births, Deaths and Marriages, Western Australia, Thelma Rose Ida Allsop; Death; Index; 100341; 1981; Perth.
- [S1446] _Births, Deaths and Marriages, Western Australia, Allan Leonard Allsop + Thelma Rose Ida Halliwell; Marriage; Index; 101680; 1929; Perth.
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