Essay, unsigned and undated but probably 1669, on trade between England and Scotland, largely consisting of copies of relevant documents dating from 1607 to 1668., 1607-[?1669]., MS.17500. Papers of the family of Fletcher of Saltoun (previously of Innerpeffer), with some of Abernethy, Lords Saltoun., MSS.16501-17880. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/40235 Accessed September 23, 2024.