Corrections and amendments to ‘The Complete Poems of Edwin Muir’, edited by Peter Butter ; copy of essay ‘The evolution of some late poems by Edwin Muir’ by Peter Butter., 1991-1997., Acc.13634/23. Research papers and literary correspondence between Peter Butter and various correspondents relating to his work on Edwin and Willa Muir, William Blake, Francis Thompson and other writers., Acc.13634/1-77. National Library of Scotland Archives and Manuscripts Division. https://manuscripts.nls.uk/repositories/2/archival_objects/15328 Accessed May 10, 2024.