Who makes historically-accurate door casing moldings?
Our neighbors where we used to live in Galveston were restoring a pre-1900 house. Unable to find identical moldings anywhere, they took some of the old moldings off and had a machine-shop create one or more custom router bits for them. The advantage of this is that they (or their handyman, really) can use this to create as much molding as they need, whenever they need it. Their project will likely take a couple years to complete, one room to the next. And if they ever sell the house, the router bits can go to the buyer.