hooking up a ground wire
Here are some examples of first generation MN wire (romex wire). This is the type of wire we use today only the older jacket is made out of a fiber mesh. This wire was introduced before there were grounded outlets. This means that some home built in the 1950's and 1960 could have the ability to upgrade their outlets to grounded outlet.
You can tell if this is something that can be done by looking at the wire connectors at the panel box. You will see that the ground wire was just wrapped around the connector but never installed on to the ground bar. A good electrician can take you panel apart and then replace your outlet. This will improve your home over all safety.
Here is a video taking a closer look at the wire. I mistakenly call the green wire knob and tube. I just want to clarify that before I get a bunch of emails about that. The green wire is first generation MN wire.
If you have this done you should also have the home's main ground looked at. Here is a ground connection that was installed at the same time as the ungrounded wire. It is easy to see that this ground clamp has corroded. Corroded metal doesn't conduct electricity correctly
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