I think a printed version maybe spiral bound or something would be fantastic and I'd go out on a limb and say I would pay for a copy 100% if the illustrations are like the ones you've shown.
I recently bought Zinn's (which everyone has had for years I'm sure) and the reason I love it so much is the illustrations. I just wish there were more. I really hope you keep us updated on the progress of your project. Seems like a lot of work, but 250 pages deep you just gotta keep going right? If you do decide to transform the project into a printed piece let me know

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I can already envision a bound book (leather?!?) with all your illustrations printed out. It'd be something very cool to keep in my living room and just have people flip through. Ok, getting ahead of myself. Great work nonetheless!