Comprehensive set of photocopies of essays by Edwin Muir published in periodicals from 1919 to 1951 collected by Peter Butter., Circa 1960-1999., Acc.13634/48. 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/15353 Accessed April 26, 2024.