The Graduate School has required electronic submission of theses and dissertations since 2003 and all graduate research is automatically deposited in DRUM (http://drum.lib.umd.edu/) and made widely available. Faculty and students expressed concerns about having this research available on the Internet. In response, the Graduate Council voted in 2006 to offer students the option of restricting access to their thesis or dissertation. This poster will describe the workflows developed by the Libraries to implement embargoes and present embargo trends from 2006 to the present.