Thanks guys!
Have been spraying various joints and bushings with no luck yet. Will concentrate on roll bar bushings next. Don't want to blow $600 on an entire control arm replacement if the solution is simpler than that.
Problem is, it's hard to get at everything without lifting the car. Sounds like the creak is low and forward of the wheel.
I also know that first thing in the morning it didn't creak, so it's something that can be lubricated by morning dew.