'Orr, Robert Graeme (1902–1970)', People Australia, National Centre of Biography, Australian National University, https://peopleaustralia.anu.edu.au/biography/orr-robert-graeme-18906/text, accessed 28 April 2025.
22 August,
1902
Camberwell, Melbourne,
Victoria,
Australia
1970
(aged ~ 67)
Toorak, Melbourne,
Victoria,
Australia