Thanks for your excellent post. The links are great.
We have fishers on the conservation land behind our house. The habitat is exactly as described on several of the links you posted. Old growth forest, lot's of tall trees and ready access to water from the Gunstock River.
Several others on this thread described the "night howling". It sounds like a woman screaming. And it will wake you from a sound sleep! We have been able to spot them on several occasions. But trying to take pictures has been a bust. They move off as soon as you try to get anywhere close to them. We did get several very blurry images, but nothing worth posting.
SteveA