Princeton Theological Commons

Princeton Theological Seminary has made a large number of digitized volumes available online, in its Theological Commons. If you have never explored its holdings, I'd encourage you to click through and do so. While it obviously consists primarily of older materials, they are particularly useful ones for academics studying ancient religion or history, Biblical studies, theology, hymnology, and a number of other related topics.

Several people on Facebook and blogs mentioned this today, including Larry Hurtado.