<i>Kare created several fonts for the system, all given names for world-class cities.</i><p>There's also a little more to this story, courtesy of Susan Kare herself at <a href="https://www.folklore.org/StoryView.py?story=World_Class_Cities.txt" rel="nofollow">https://www.folklore.org/StoryView.py?story=World_Class_Citi...</a><p>The fonts were named after commuter train stops in Philadelphia until Jobs decided they should be renamed after "world class cities".