Freight Car Encyclopedia

Pretty nice site: This is a pictorial encyclopedia of N-scale Freight, Caboose, and Maintenance-Of-Way cars (restricted to North American prototypes, or cars factory-painted in North American livery schemes). Photos with year build dates. Scale not relevant, an aide to car types/etc. to even help place photos in time.

http://www.visi.com/~spookshow/freight/freight.html