I am looking for the source of Beaver mud flap, stainless steel, Weight with Beaver logo

These folks at Duraflap are great to work with and build a quality product. I especially like that they blind weld stainless studs to the stainless metal plate so that there are no holes. The backer plate is also high quality. The metal materials are heavy enough that you do not get bending, they tend to remain flat.

They are a small family outfit that still believes in quality. They can do custom logos of most any design that you provide. They send you a mock up by Email that you can accept and finalize. They sandwich the plates in wood and ship them so that they arrive in tact. The only issue I ran into is that Navistar stopped them from using the standard Beaver Logos so you may need to provide the graphics of your own Beaver symbols.
http://www.duraflap.com/rv.html

This is what we did. Hope this helps.

later Ed