han was raised by a female wookie, which is an idea lucas ripped off from tarzan, and burroughs got the idea from the roman myth of romulas and remus being raised by a wolf. It ended up in the ann crispin trilogy, and the guy han modeled himself on eventually became garm bel iblis. and han's first meeting with chewie was when he was an imperial liutenant who was drummed out of the service for saving a wookie slave, who actually happened to be chewbacca. Which is in both The ann crispin han solo trilogy, and brian daley's.