Database of Religious History is designed to serve as a centralized clearinghouse for scholarly knowledge of the historical record, bringing together a core of quantified, standardized data with qualitative comments, references to crucial resources, and links to on-line text and image databases.
The Crowd Counting Consortium (CCC), a joint project of Harvard Kennedy School and the University of Connecticut, collects publicly available data on political crowds reported in the United States, including marches, protests, strikes, demonstrations, riots, and other actions. 
These original photographs document the involvement of Queens College students and other Northerners in the Civil Rights Movement of the early to mid-1960s, including Mississippi Freedom Summer, the Virginia Student Help Project, the Summer Community Organization and Political Education (SCOPE) Project, and the Medical Committee for Human Rights (MCHR).
Phillips University Yearbooks from 1914-1997, except for 1918, 1956, and 1957. The yearbooks were digitized by the Phillips University Legacy Foundation. 
Loebolus contains the works in the Loeb Classical Library of Greek and Roman writings which have entered the public domain. Works may be downloaded as PDFs. 
The Latin America Collection at Princeton Theological Seminary, enhanced by the donated library of President Emeritus John A. Mackay in 1983, comprises over 28,000 books in Spanish and Portuguese and 1,300 periodicals supporting instruction and research in Latin American religious culture. The Library’s collecting concentration on religion and theology in Mexico, Central America, the Caribbean and South America is closely interwoven with Latin American collecting at Princeton University.
Open Library is an initiative of the Internet Archive, and contains contains information about books. Internet Archive hosts a collection of digitized books. Open Library’s universal catalog provides links to discover, borrow, and read from the Internet Archive’s collections. 
BlackPast.org, an online reference center makes available a wealth of materials on African American history in one central location on the Internet. 
The Black Theology Papers Project aims to preserve and promote the intellectual heritage of black theology. The journal publishes one annual issue featuring papers presented by the Black Theology Unit of the American Academy of Religion. 
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. 