Tracing through a trail of references I found myself needing something proven in Appendix A of "The Stable Category and Generalized Thom Spectra" by Gaunce Lewis (I believe this was his thesis at UChicago under Peter May, from 1978). My library doesn't seem to have a copy and I can't find anything online. Does anyone know where I could find this?
Before anyone suggests it, I'll remark that I can't contact Lewis himself because he passed away several years ago. I guess I'm hoping Peter May will come on here and know where a copy can be found.