Whole books have been written about architectural styles, so please forgive me if I’ve left a few things out. Ok, maybe a lot of things! But here are a few basics that begin to describe some of the houses we find in our region—and if I’m lucky, their origins. I don’t need to say much about the ubiquitous stone houses in Bucks and Hunterdon Counties, which all fall under the category of farm houses, or colonials. You will usually find that they were built before 1850, using native stones plowed up from the fields. The earliest stone farmhouses can be almost universally identified by the living room winding staircase (we call them pie stairs) located next a walk-in fireplace with a d…