For Graduate Students
The Thesis-Dissertation Information home page is the best place to start. From there, you can visit Before Starting Your Research to locate:
Copyright permission instructions (including and a sample letter for requesting permission)
Finishing Your Degree provides links to the thesis and dissertation publishing agreements, which are required documents wherein the student represents and warrants that the thesis/dissertation is original, non-infringing, etc. and that appropriate rights/permissions have been obtained.