College libraries?

[prunesnprisms.livejournal.com]

Drawing a bit on the theme of the earlier post on adult education, I was wondering something slightly different.

I'm about to start a master's program online, and the degree requirements will mean that I have to have access to a college library. Tufts is the most convenient, but Harvard is pretty convenient too, as I work and live on the red line.

Anyone know anything about getting access to these university's libraries as a non-student? This isn't my only source of information, but we've got a pretty diverse crowd here and I thought someone might know a bit about it.