I have fabrics for sale that range in width from 41-1/2 inches to 44-3/4 inches.
These are all at least five years old, some of them are around ten years old.
These include some brands/lines that are considered "better" (as far as I know) - Maywood, David Textiles, Nancy Crow, Robert Kaufman.
A couple of them had no name on the selvage, but feel like "good stuff"