Building Evolution and Updates.

[Crusty Trucker]

Here's an example of what appears to be an older building updated with electricity and indoor plumbing. Even as a kid in the '50's I recall exposed wiring and water or sewer pipes added to buildings that were built long before either were invented. A single light bulb hanging from a cord dropped from the ceiling and switched by a pull-chain was not uncommon. No doubt examples exist today.