Steering wheel squeak- anyone dealt with this before?

The steering wheel in my 70 duster (slant six, automatic on the column) squeaks when turning left. Not always, but often enough, and it's really annoying. I took a video, of course it mostly stopped doing it while I was recording... but you can hear the squeak in the video (it's usually worse).

Anyone dealt with this and can give me guidance on how best to fix it?

[ame="http://youtu.be/wctzliIGadw"]302 Found[/ame]