If you ever get up to the Trading Post in Kittery, Maine, they have an armory style gun department with hundreds of long guns on display that you may pick up and examine--at least the last time I was there. It's a good place to find most popular eastern woods guns such as 99s, Marlins, Model 94s etc.
Also, those smaller gunshops/hardware stores scattered throughout NY and PA hunting areas is another good place to find vintage rifles. However, it's been my experience that guns owned by farmers or people who live in rural deer hunting areas generally show signs of harder use and less maintenance than guns owned by city dwellers. There's an armory style gunshop up in Steuben County NY where I saw either a Marlin or a savage (don't remember which) fitted with a recoil pad made from a piece of tire tread.
