The Sketchbook of Susan Kare

(Via Steve Silberman)

I don't delve into this stuff as deeply as other design-minded people, but I'm kind of surprised that I hadn't heard of Kare until now. Her work is unquestionably a huge part of the design language of Macs up to the end of the System 9 era, and much of modern OS X iconography is obviously derived from her work. It's amazing how many of those icons lasted virtually unchanged for decades in various Mac OS iterations.