I dug this 1930's porcelain doorknob while detecting what use to be a large neighborhood built in the early 1930's. A historic flood wiped everything out. After the flood waters receded, the houses were torn down & the entire neighborhood is now just grass resembling what looks like a park. By looking at the trees, you can see where each lot was. I would guess there were at least a few hundred houses here. It's going to take years to cover the entire area.