Does anyone know if the Timber Ridge preformed layout is still being manufactured by American Plastics (Terrain for Trains) or where I could get one?
Welcome.
You would do better to post in the proper forum.
Notice the sentence right above this forum.
Use the Model Railroader General or layout forums. Few people pay attention to the top forums.
You can also Google the company.
Rich
If you ever fall over in public, pick yourself up and say “sorry it’s been a while since I inhabited a body.” And just walk away.
I tried to sell my two cents worth, but no one would give me a plug nickel for it.
I don't have a leg to stand on.