So how would we have done this sort of thing before wikis? What about a plain old directory? This is the kind of thing that would take a person to spearhead it, but it might be worth a shot. Develop a survey that assess the needs and wants, get them out to the participating libraries, have them mailed or faxed or emailed back to one central person, and that person could then assimilate that info into a directory that could be sent back out to all the participants in hard copy or whatever electronic format people agree on (excel, pdf, word, whatever). You can’t keep it up to date as quickly & effortlessly, and it takes more time from one person, but it’s better than a ton of in-person meetings to hash it all out! You’d maybe need just one to get it going, and perhaps you could arrange for that meeting to happen at a time when almost everyone would be together anyway, like a state library assn. conference.