| APSD | | The Dictionary of Architecture | ed Wyatt Papworth | The Architectural Publication Society (8v 1852-1892) | |
| Architects Engineers and Building Trades Directory | 1868 | Architect's, Engineer's and Building Trades' Directory | | London, Wyman | |
| Gildard, Thomas | 1895 | An Old Glasgow Architect on some Older Ones | XXVI | Proceedings of the Royal Philosophical Society of Glasgow | |
| Pagan, J | 1847 | Sketch of the History of Glasgow | | | |
| Walker, David M | 1966 | Salmon, Son, Grandson and Gillespie | | Scottish Art Review, vol. X, no. 3, pp. 17-29 | |
| Walker, David W | 1995 | The Salmon Collection | | Unpublished: copy in NMRS | |