Sheila Morrissey (Sheila.Morrissey@ithaka.org) is a Senior Research Developer at ITHAKA, a not-for-profit organization that helps the academic community use digital technologies to preserve the scholarly record and to advance research and teaching in sustainable ways. She has worked on the Portico digital preservation service, a part of ITHAKA that preserves scholarly literature published in electronic form and ensures that these materials remain accessible to future scholars, researchers, and students. She has worked as a Portico partner with the California Digital Library and Stanford University Library in developing the next-generation JHOVE2 tool. Her past work includes the design and development of print and electronic publishing systems. She has served as a representative to XML vocabulary standards groups. She received her BA in English Literature from Yale University, her MA in English Literature from Cornell University, and her MS in Computer Science from Rutgers University.