Correspondence, notes and printed material relating to the Heating and Ventilation Commission, of which Campbell was secretary., 1855-1860., Adv.MSS.51.1.15-51.2.2. Correspondence and papers, including many manuscripts in Gaelic, journals and yearbooks (with many photographs), albums of watercolour paintings and sketches, and experimental notebooks, of John Francis Campbell of Islay (1821-1885), Gaelic scholar and collector of oral tradition, traveller, scientist, official of the royal household and public servant., Adv.MSS.50.1.1-51.2.7. National Library of Scotland Archives and Manuscripts Division. https://manuscripts.nls.uk/repositories/2/archival_objects/16767 Accessed May 10, 2024.