Volume IX is the final part of the Directory of Scottish Settlers in North America, 1625-1825 series. The series is a compilation of miscellaneous Scottish references abstracted from a wide range of sources. Libraries in Scotland and abroad provide some interesting material. Most of the libraries were in Scotland, such as the National Library of Scotland and the Library of the University of St. Andrews. The author also consulted sources in London, such as the City of London Record Office and the National Maritime Museum. Published sources such as the Scots Magazine, the Gentleman's Magazine, and the Royal Gazette of North America provided valuable, if obscure, references. The matriculation rolls and the graduation records of the Scottish universities, for instance, identified the sons of colonists who were sent to Scotland for their education. The majority of these students bore Scottish surnames, but there were some with continental European names who may have been attracted by the courses offered, especially the medical ones.