- Nautical School-ship "Sobraon"
- State Records Authority of New South Wales website
- Type of Work
- Finding Aid
- State of New South Wales through the State Records Authority of NSW 2016
State Records NSW Agency number 411.
Former title: Nautical School-ship "Vernon" ( 1867-1892) / Nautical School-ship "Sobraon" (1892-1911)