Strengths of the library's special collections include documentation of the Protestant missionary endeavor, documentation of religious work among college and university students, records related to American clergy and evangelists, and unofficial records related to the life of the Divinity School.

Recent acquisitions

The Library recently added the archives of Interfaith Cooperative Ministries, Inc., an organization established as the Downtown Cooperative Ministry, Inc. in the early 1970s in New Haven, Connecticut. The Downtown Cooperative Ministry, Inc. (DCM) evolved from the New Haven Council of Churches and sought "To be agents of human empowerment to the disenfranchised in the New Haven area under a theological discipline." DCM approached this mission of empowerment through efforts to build relationships between the several churches, participation and support for the development of social service agencies and programs, and direct involvement in local, state and national justice issues. See the finding aid at