Isaac Mattson died on 25 September 1917.
Goldfields Involvement, 1854
Post 1854 Experiences
- Mr. Isaac Mattson, whose death has occurred in Melbourne in his 94th year, took an active part in the Eureka incident, in 1854, being, an intimate friend of Peter Lalor and of Esmond, the gold discoverer, one of Lalor's foragers for ammunition. Be was one of the pioneers of mining in California. He took an active part in securing the Presidency of the United States for Zachary Taylor in 1848, and left California for Ballarat in 1851. He has left four daughters, 17 grandchildren and nine great grand children. 
Corfield, J., Wickham, D., & Gervasoni, C. The Eureka Encyclopaedia, Ballarat Heritage Services, 2004.
- Recorder, December 1988.
- The Horsham Times, 9 October 1917.
- Ballarat Courier, 29 September 1917