- Steam Locomotives of the 20th Century
- Steam Locomotive Numbering
- QR Steam Locomotives – Introductory Notes
- 3′ 6″ Gauge Engines acquired under North Coast Railway Act of 1910
- Engines acquired from Chillagoe Railway & Mining Company
- 4D10 – Ipswich Class
- 4D11½ Abt Class
- 6D11½ Crane Class
- 6D11½ Motor Class
- 6D13 – Originally F – Class
- 6D13½ Abt Class
- 6D13½ later B13½ Class
- 6D16 Class
- 6D17 later D17 Class
- 8D15 Class
- A10 Baldwin – Originally American Passenger Class
- A10 Fairlie – Originally A Class
- A10 Neilson – Originally B Class
- A11 – Originally Large A Class
- A12 – Originally American Passenger Class
- A12 (small) – American Passenger Class
- A14 Class
- AC16 Class
- Australian Standard Garratt
- B11 – Originally C Class
- B11 Baldwin Class
- B12 – Originally E Class
- B13 Class
- B15 Class
- B15con Class
- B16½ Class
- B17 Class
- B18¼ Class
- BB18¼ Class
- Beyer-Garratt Class
- C13 Baldwin Class
- C13 Dubs – Originally Small Consolation Class
- C15 – Originally Large Consolation Class
- C16 Baldwin – Large Consolidation Classba
- C16 Class
- C17 Class
- C18 later CC19 Class
- C19 Class
- DD17 Class
- PB15 (1924) Class
- PB15 Class