'The little red school book' (London: Stage 1, 1971), by Soren Hansen and Jasper Jensen, with related correspondence and notes., 1971., Acc.10397/45. Papers of Sydney Goodsir Smith., Acc.10397/1-59. National Library of Scotland Archives and Manuscripts Division. https://nlssb.as.atlas-sys.com/repositories/2/archival_objects/76393 Accessed September 30, 2024.