Between institutional repositories and hosting journals, many libraries are becoming responsible for scholarly content in new ways. While portable document formats (PDFs) are the most common formats today, the unique, local, serial content could be in variety of formats. These items might be digitized text, born digital text, audio, video, or images, or multimedia.. This paper discusses formats that will remain accessible through time (PDF/A, txt, xml) so that contents are not locked into proprietary formats. It will also discuss options for backing up items and associated metadata, including simple back-ups, off-site storage of files, Lots of Copies Keep Stuff Safe (LOCKSS, Private LOCKSS Networks, and Portico. The article offers suggestions for how your library might best preserve local content.