The Penn Libraries has been accepted as a member of the National Digital Stewardship Alliance (NDSA), a consortium of organizations committed to the long-term preservation of digital information. Rachel Appel, Penn Libraries’ digital preservation librarian, will serve on the NDSA Infrastructure Interest Group. The NDSA’s membership of over 250 organizations includes universities, government and non-profit organizations, commercial businesses, and professional associations. Its institutional home is the Digital Library Federation at the Council on Library and Information Resources.