You or one of your commenters might know this. I've been sporadically looking for writing (academic, not memoir or biography or fanfic) about C.S. Lewis that seriously engages with his writing (particularly Narnia or the apologias), written by people from a non-Christian religious/cultural/philosophical background. So far my research skills have been insufficient to the task at hand, and the only Lewis studies journals etc I've found have been Christian-centric. Do you have any leads or suggestions?