Notebook entitled "Observations on Logic by Several Professors" containing notes on lectures on logic given at the Universities of St Andrews, Aberdeen, and Edinburgh, taken down by John Campbell

Notebook entitled "Observations on Logic by Several Professors" containing notes on lectures on logic given at the Universities of St Andrews, Aberdeen, and Edinburgh, taken down by John Campbell, Coll-2164, Volume: Dk.3.2. University of Edinburgh Library Heritage Collections. http://127.0.0.1:8081/repositories/2/resources/87584 Accessed April 18, 2026.