Scrapbook of John Francis Campbell containing the continuation of experiments to register solar images, mainly while he was in Cannes, and which he describes in Chapter 5 of ‘Thermography’., 1881-1882., Adv.MS.50.6.16. 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/16844 Accessed July 27, 2024.