I wonder how many companies have optics catalogs. I needed a mirror with a reflective front surface (instead of inside or on the back where the light has to go

I wonder how many companies have optics catalogs. I needed a mirror with a reflective front surface (instead of inside or on the back where the light has to go through the glass on a normal mirror) to do what they did in Tim’s Vermeer (the simple mirror version, not the full lens version, although that would be cool if I can figure out the parts I need). Anyway, they (Edmunds) later sent me a full catalog with all kinds of laser stuff I don’t understand with detailed educational information about them and how to set up proper measurement systems and so on.