Bought a LLBean barn coat from Atwoods as a close out - the tag cut out - last ones I saw. Probably 10-15 years ago.
Anything close to the old standards would be Carhartt, Blue Mountain, Dickies, Duluth, Levis, Berne, Browning, Rocky, Pendleton, Wolverine, Dri Duck, Woolrich - all to be found on the internet, but you won't know until you try them.
The old school sources sold off long ago, you have to look for different names.
I'd avoid Walls, tho. Been there done that.
Try farm and tractor ag stores and expect some disappointment with any brand now. On the other hand, post season markdowns and some open mindedness in style and color will net some great bang for the buck bargains. I got good sherpa lined canvas vests from Dunhams last spring, Wolverine and others, for $25 each.
It rarely shows up at resale shops like DAV or Goodwill. Gave it up.