Leo Archive, National Archive for the History of Computing, Manchester, LEO Computers, see https://archiveshub.jisc.ac.uk/search/archives/367f3633-3a28-3fa9- 837c-039693dcf8ee for listing of items held at John Rylands Library. As part of the library’s special collections, the Archive is located in the main building of John Rylands University Library of Manchester, Burlington Street (building 18 in the campus map). Note the collection is not digitised and can be viewed by application to the librarian.
