Tanneries:
http://prattmuseum.com/archive/history/tanning.htm
http://northernwoodlands.org/articles/article/hemlock-and-hide-the-tanbark-industry-in-old-new-york
What is a tannery?
What is the history of tanneries in the Catskills (history of tanneries in the Catskills)
How has tanning changed over the centuries—in the US, in NY?
Where were the most tanneries? What state today has the most tanneries?
Describe the basic tanning process used in the Catskills-- what it entails, chemicals used and what happens to the chemicals used in the process.
Why does it need to be by a river?
Why were the hemlock trees important?
What was the impact of the tree cutting to the forest and streams?
Where did fly fishing industry start?
Where were the majority of saddles made for the Civil War?