The Historical Society of Pennsylvania highlights a great resource, the Digital Public Library of America (DPLA), in a blog post. The DPLA is a free, national digital library that gives you access to more than 20.6 million items from more than 2,900 libraries, archives and museums. The website includes Primary Sources Sets for educators and students in secondary and higher education that feature 120 topic-based “highlight reels” of primary source images, documents, and text excerpts, audio/video clips, and more. These sets feature interdisciplinary topics related to U.S. history, American literature, world history, history of science and technology, and art history. They will help your students contextualize literature, build their independent research skills and enhance critical thinking skills. To read the full blog post, go here.