Not to sound like a negative nancy or anything but what's going to stop you from getting sued for copyright infringement?
Valid question, and one that has taken me a while to get sorted!
For the book, it's pretty easy - just recognise the copyrights and trademarks in a statement in the front of the book. Art books are considered 'works of reference' and are treated as documentary works.
The framed prints and canvasses are much harder - that has taken a lot of phoning, emailing, writing and negotiating. The toughest part is that so many of the old manufacturers went out of business, got bought and sold numerous times and licensed/relicensed their assets over and over again. Just tracing the legal licensee or owner is a nightmare.
There's one company that won't budge on licensing but their stuff isn't likely to be on anyone's list of wall art so, no problem.

Even Lucasfilm gave us a license for limited art prints. So far, Disney haven't been in touch to tell us they've changed their minds!