SearchPlus does not have a good way to limit your results only to primary sources. However, the library's database list does identify online collections we have purchased access to which are composed of the most common types of primary sources: diaries, letters, legal documents, photographs, first-hand accounts, etc.
Go to the Electronic Resources section of the library website: er.lib.msu.edu. (This section identifies all the individual databases we subscribe to - all types including primary sources. Most, but not all, are being searched collectively when you use SearchPlus.)
On the left, click on the Primary Sources tab. On the right is a short list of the most frequently used online collections of primary sources. Or go to the entire giant list at the bottom.
African American Community. Resources on Black urban life.
Archives Unbound Collections. Subcollections include material from:
• the National Negro Congress
• the Black Liberation Army
• the Revolutionary Action Movement
• Fannie Lou Hamer
• U.S. government response to 1960s radicalism
• U.S. government surveillance of African Americans
• FBI files on Benjamin J. Davis Jr.
• African liberation movement
• papers of Amiri Baraka
• 1961 Freedom Riders
Black Drama: 1850 to the Present
Black Thought and Culture
ProQuest History Vault. Subcollections include material from:
• Claude Barnett papers
• Robert F. Williams papers
• Student Nonviolent Coordinating Committee
• Southern Christian Leadership Council
• Congress of Racial Equality
• Mississippi Freedom Summer participants
The Sixties: Primary Documents and Personal Narratives
Slavery, Abolition, and Social Justice: 1490-2007
Twentieth Century African American Poetry