Hi Folks

I'm working on the restoration of an historic frame that was cut by Humphreys Ltd of London UK in 1907. The original spec (we're very fortunate to actually have a copy) called for a felt lining called 'Stoniflex Felt' and I'm trying to track this product down. I recovered some samples from site: a dark brown, fibrous felt about 1/2 inch thick.

I'm wondering if any of you fine people have come across a database / search tool / other resource that is useful for tracking down historic building materials like this?