'Hart, Sylvia Deborah (1892–1980)', People Australia, National Centre of Biography, Australian National University, https://peopleaustralia.anu.edu.au/biography/hart-sylvia-deborah-22298/text, accessed 21 May 2025.
28 June,
1892
Maitland,
New South Wales,
Australia
3 August,
1980
(aged 88)
New South Wales,
Australia