The Penn Libraries and the Schoenberg Institute for Manuscript Studies are thrilled to announce the launch of OPenn: Primary Resources Available to Everyone, a new website that makes digitized cultural heritage material freely available and accessible to the public. The website contains complete sets of high-resolution archival images of manuscripts from the University of Pennsylvania Libraries, along with machine-readable TEI P5 descriptions and technical metadata. More datasets, including additional material from the Penn Libraries and other institutions, will be added to the site.