Thanks Jason and Curly for sharing your experiences. You all were pretty much
right on. It was the new alternator belt.

For the archives: I had "Sharpie ink" marked the alternator adjusting bolt slide
before removing the old alternator belt, indicating where on the slide the bolt
lined up. But I did not adjust the new alternator belt to the same point. My
"guesstimate" of the belt deflection seemed to support this. Wrong.

This morning I increased the tension to just a tad shy of the old belt's mark.
No more morning squeal.

Curly wrote:
> Same happened to me after I did my timing belt. I just had to tighten
> one of them tighter. Try starting up with the heater fan, headlights,
> cigarette lighter, rear defrost, radio, wipers ON. If it's any worse,
> you'll know it's the alternator one. Simple.
>
> Those belts have to be pretty tight. :-)
>
> You can also squirt a fine mist of water at the suspect belt and see
> which slips. Harder trick than other. Gets face wet.