 Some doubt has been cast on the authenticity of the Lefay Fragment, as the handwriting in the manuscript differs in some ways from Lewis's usual style, and the writing is not of a similar calibre to his other work.Also in August 1963 Lewis had given instructions to Douglas Gresham to destroy all his unfinished or incomplete fragments of manuscript when his rooms at Magdalene College, Cambridge were being cleaned out, following his resignation from the college early in the month.A number of aspects of "The Magician's Nephew" parallel Lewis's own life.