A primary source is a source of information, such as document, recording, or artifact, that has a direct connection to a person from a period of time. Examples of primary documents are correspondence, diaries, memoirs or oral interviews.
A secondary source uses primary sources to create their argument. Examples of secondary sources are books or journal articles.
Search for digitized government and private publications, as well as audio and video resources.
Search for digitized books and other works. Note, not all items in the collection are available for full-text access.