I guess if you have patience and look hard enough you’ll eventually find what you’ve been seeking.
I was very lucky to find this Woolly Board II for the bargain basement price of $10. However, shipping from the East coast was another $35.
It’s made of finished poplar wood. All the pieces come apart and are stored in a handy cloth bag. It came with instructions but didn’t include any indication of who made it. My guess would be that it was made in the early or mid 90’s when Ms. Starmore’s books were still in circulation. The instructions refer to the woolly board shown in Stillwater.