Today marks the Digital Public Library of America's one-year anniversary. To celebrate the occasion, the non-profit library network announced six new partnerships with major archives, including the US Government Printing Office and the J. Paul Getty Trust.
The DPLA is best described as a platform that connects the online archives of many libraries around the nation into a single network. You can search all of these archives through the digital library's website, and developers can build apps around the DPLA's metadata collection using the publicly available API.