I appreciate all the help. The replies are very mixed. Since I d o not want to take a chance I will just go to eBay like
@chscag said. I do not want to tangle with copyright, mainly since I am selling the laptop.
Seconding
@repairedCheese here: embrace the joys of abandonware.
But if you want to err to the side of caution without forking over cash for used DVD data discs, use Everymac.com’s
original specs for your specific model PowerBook to determine a) which OS X version was shipped with the PowerBook, and b) turning to Archive.org’s
software archives and/or the Macintoshgarden.org’s
archives to find, if available, copies of the OEM install and restore DVDs which would have shipped with that specific PowerBook.
To do this properly, though, it may require you to do some sleuthing on the Apple part numbers for the specific OEM install DVDs which originally shipped with your PowerBook (and whose Apple part numbers might look something like “663-1234” or similar). Finding those OEM DVDs on places like CL or eBay are going to be a very hit or miss affair — more than likely, the latter.
EDIT to add: in the end, you just want to get the system up and running before selling it. This is where turning to abandonware will help to speed things up and create less of an urge to set aside the computer out of frustration.