Lucas comments to Micah that he thought Micah had sent Dan Maury to Yuma Prison five years ago. Lucas and Micah live in New Mexico Territory. Yuma is an Arizona Territorial Prison so courts in other territories would not send their convicts there.
At about 15:20 the camera shows a street scene in Northfork at night.The lantern or "street light" in the foreground clearly shows a modern style incandescent bulb inside.