My 292 Mhz PowerBook G3 Wallstreet runs on OS 10.2.8
I installed a 75 GB HD and partitioned it so the smaller part, 8 GB is where the OS X is located and the larger partition, the 67 GB part is where the classic OS 9 is located.
I do have original OS 9 and OS 10 CD's which I have used in the past on my Power Mac G4 desktop model.
Love the keyboard on this Wallstreet, so much more comfortable to use than even my brand new Macbook Pro.
Wish I could get a higher OS X into the Wallstreet and have ability to view newer versions of QuickTime, but am generally satisfied with the limited uses on OS 10.2