This is the latest Lewis chronology:
The file that appears below lists all works of C. S. Lewis in chronological order (now 528 in number) in the location where they were first published or delivered (if spoken) as far as I am able to determine. Corrections are welcome. This version, slightly revised and added on July 11, 2019, includes works listed in the bibliography of Adam Barkman's C. S. Lewis & Philosophy as a Way of Life. It also includes the recently discovered (by Christopher Marsh) "A Christmas Sermon for Pagans" and some undated poems with estimated dates based on handwriting analysis.
This file describes what is happening in Oxford, Cambridge, the UK, and Europe at the time that Lewis writes his various poems, essays, and books, dividing the life and writings of Lewis by academic topic, i.e. English, Philosophy, History, etc.