1. Museum no. HC2001.15, Museum Collections Unit, University of St Andrews.
2. The long-lost letter from Charles I to Sir Henry is discussed in a letter from James Rennie to Robert Wardlaw, dated 29 January 1823, MS 38590(iii), University of St Andrews Library, Department of Special Collections.
3. Daryl Green, 600 Years of Book Collecting (St Andrews: University of St Andrews, 2013), Volume 1: Divinity and Politics, pp. 10-11.