1. Inaugurals of Presidents of the United States (via Architect of the U.S. Capitol)
Dates, locations, and notable facts.
2. Presidential Inaugurations (via White House Historical Association)
Backgrounders, timeline, and more.
7. Presidential Speech Archive (via Miller Center, U. of Virginia)
Collection of inaugural addresses and other presidential speeches.
On a related note…A recently update Congressional Research Service report on presidential inauguration security.
Full Text: Inauguration Security: Operations, Appropriations, and Issues for Congress (via FPC)
Updated December 17, 2012 (15 pages; PDF).