I live about 10 miles from the Central Valley's roadbed and have explored many portions of it. I've even found spikes left behind by the dismantlers. They were buried almost a foot deep in the ground.
I just found this site and thread but I don't see where anyone mentioned Richard Palmer's article in the R&LHS's Railroad History issue no. 128. The article contains a photo of the Central Valley's only loco, a 2-4-0 named the "Warren Newton" after a prominent local banker and also a builder's photo of the CV's neat little J&S passenger combine car. Palmer's history does a good job of describing the CV's history which includes several interesting antics by local competing railroads.
BTW - The CV never reached Chenango Forks but was built from a connection on the DL&W several miles north of Chenango Forks to the outskirts of Smithville Flats. I believe Richard Palmer has been working on a more extensive history of the Central Valley RR but don't know when it will be released.