Also deregulating oral history are Brigham Young University and Princeton University. Princeton's policy is particularly clear:
Proposed research including journalistic interviews, oral histories, biographical profiles, or other forms of nonfiction narratives, normally does not fall within the jurisdiction of the IRB. In these cases, the individuals being interviewed understand that they are being quoted, and have every expectation that their views will be made known. The interviewees are advised of their right to remain anonymous, to have their remarks printed without attribution, or kept 'off the record'. If the interviewee is directly quoted, they are allowed to read or hear the quotations attributed to them. The interviewee will also be advised of any publication plans for the project. Most projects from Humanities meet the above criteria; therefore they do not qualify for the IRB review, and do not need to submit their project to the IRB for approval.
Other colleges and universities that have cleared oral history include Amherst College, Columbia University, University of Missouri-Kansas City, the University of Michigan, and the University of Nebraska-Lincoln.
This is still not a long list, but the field is shifting from early 2006, when the American Historical Association struggled to find such unambiguous statements.
Update, 4 May 2010: I have posted a copy of the Texas report.