Geez, how is it that some rural areas and small towns can be so unwelcoming and not helpful? My town was like that, but it is getting better. I feel for you, RP.
You can look in the municipal property taxation office (don't know what it is in the US) for a history of the property's transactions. That should get you names of previous owners. You could also try previous owners of neighbouring properties.
Perhaps a local or county agricultural organization would have some geological, agricultural and wildlife information that would be interesting? If there is a wildcat around, you might not see it on the cameras. They are notoriously hard to spot.