I always liked the Maine Central, but I think that anyone planning an internet based historical society should probably contact some of the folks who were central to the Erie Lackawanna Historical & Technical Society (which recently folded into the ELHS) and talk with them about the difficulties they encountered trying to get material and maintain a publishing schedule. Seriously guys, it takes just as much work to write a feature article for a historical society where it will be seen by a few hundred people as it does to write it for a major magazine where it will be seen by many thousands. For projects that require a lot of time and effort, most authors very understandably prefer the larger audience. Internet publishing has its own problems. The internet is practically a "free theft" zone, five minutes after information is posted on your website it is being reposted on somebody else's website without any credit to the original authors, and shortly after that it is being sold as CDs on eBay.
"We Repair No Locomotive Before Its Time"