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 an interesting collection of buttons and pins that provide a window on social and political issues in America since the 1960s, including civil rights, the Vietnam war, drug culture, peacemaking, and ecology.  More than 480 buttons collected by Henry Hale Bucher, Jr. have been added to his papers in Record Group 250. Correspondence, writings, and collected material in this record group document the life and work of Bucher, focusing on his participation in ecumenical study and mission abroad programs, his work with the University Christian Movement and other organizations concerning Middle East and Jewish-Christian issues, and his draft resistance during the Vietnam war.