Oklahoma Digital Prairie provides visitors unique digital content spanning more than 100 years of rich, vibrant history from the 46th State. The resource areas include documents, photographs, newspapers, reports, pamphlets, posters, maps, and audio/visual content. Content ranges from the late 1800s to the present day.
Chronicling America is a Website providing access to information about historic newspapers and select digitized newspaper pages, and is produced by the National Digital Newspaper Program (NDNP). NDNP, a partnership between the National Endowment for the Humanities (NEH) and the Library of Congress (LC), is a long-term effort to develop an Internet-based, searchable database of U.S. newspapers with descriptive information and select digitization of historic pages.
Independent Voices is an open-access digital collection of alternative press newspapers, magazines and journals, drawn from the special collections of participating libraries. 
ProQuest’s openly available Black Freedom Struggle website features 2,000 expertly selected primary source documents – historical newspaper articles, pamphlets, diaries, correspondence and more – from pivotal eras in African American history. 