Walter E. Pidgeon, Illustration from The Eureka Stockade
by Raffaello Carboni, Sunnybrook Press, 1942, offset print.
Art Gallery of Ballarat, purchased 1994.
Goldfields Involvement, 1854
Williamson was a witness examined during the report of the Board appointed to enquire into circumstances connected with the riot at Ballarat, and the burning of James Bentley's Eureka Hotel. 
Post 1854 Experiences
Corfield, J., Wickham, D., & Gervasoni, C. The Eureka Encyclopaedia, Ballarat Heritage Services, 2004.
- ↑ Report of the Board appointed to Enquire into Circumstances Connected with the Late Disturbance at Ballarat, John Ferres, Government Printer, Melbourne, 21 November 1854.