This online store selling all manner of Finnish goods, as a service to their customers have set up this very interesting and useful page as a ref for iittala designers.http://www.ilmi-johanna.com/design/ic_designers.html
I'm sure they won't mind us referring to it on occaision. If I lived Stateside I'd be very tempted by some of the glassware they sell.
If you come accross other designer links like this please add to this thread. Thank you