Haurongo: O'Neill, Charles Gordon
He whakaaturanga anō
Rārangi pukapuka
'Charles Gordon O'Neill: engineer and apostle. Founder of our society in Australia'. St Vincent de Paul Record (Jan. 1967): 7--30
Furkert, F. W. Early New Zealand engineers. Wellington, 1953
Welch, J. W. F. 'Municipal transport engineering in Wellington'. New Zealand Engineering 4, No 12 (1949): 1075--1084