Scrapbook of John Francis Campbell containing ‘372 Solar Thermographs of various sizes’, the results of his experiments with asbestos, from May to December 1882., 1882., Adv.MS.50.6.17. 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/16845 Accessed May 12, 2024.