What wood is used to make a baseball bat?

Where does the maple wood come from?
It depends on the company. For instance, Louisville Slugger has its own wood production company, but also outsources with a few different timber companies, most of them in the New York/Pennsylvania area. Holman uses a company out of the Catskills, which he says produces better quality maple.

Source: http://sports.espn.go.com/mlb/news/story?id=3540538