[Tkinter-discuss] Recommendations for free and commercial icon/image sets licensed for commercial use?

[python at bdurham.com]

Any recommendations for free and commercial icon/image sets
licensed for commercial use?

I've seen some really high quality icons/images in open source
software lately, but I suspect most of these image sets are GPL
in nature, thus (in my interpretation) not available for use in
commercial products.

Thanks,
Malcolm