- IMAGELIB -- Archives available at http://listserv.arizona.edu/archives/imagelib.html
- ARCHIVES -- http://listserv.muohio.edu/archives/archives.html
Anyone can subscribe to these lists. Both are available in digest form (which means you get one big message per day, instead of many smaller messages), which can be handy for someone who is "lurking" on a list or doesn't want to be innudated with lots of e-mail.
Personally, I like the breadth of discussion on ARCHIVES and have found it a great place to ask any archives related question. The subscribers to that list are truly knowledgeable and willing to share what they know.