I would go door-to-door soliciting contributions to a new encyclopedia, mailing the improvements out as a "National Geographic"-style magazine/journal.
I think this could still succeed, and I would almost certainly subscribe if the magazine was well-designed and had interesting topics.
I was just looking at my parent's collection of National Geographics and the shelf of yellow spines looks beautiful as a thing in itself, not to mention that they are filled with amazing articles and photography.
Edit: This would be a good Kickstarter candidate IMO!
