Roger Tremblay explains casting stone
- Stone mason conservator Michael Davidson explains the patina construction of the 165 year old English Gothic building of The Salem Witch Museum.
- Michael Davidson explains the water damage to the triforium window of the 165 year old English Gothic building of The Salem Witch Museum.
- Roger Tremblay explains casting stone
- On Top of the Salem Witch Museum
- Repairing the Triforium Window