Mary Marshall Clark is Director of the Oral History Research Office at Columbia.  Over the past decade, Clark has interviewed notable individuals such as Archbishop Emeritus Desmond Tutu and the late Congresswoman Bella Abzug among many others. Currently, she is working on the Malcolm X – Dr. Betty Shabazz Oral History Project, which will record interviews with their surviving siblings and close relatives, prominent civil rights, labor, business and community leaders from Harlem and throughout black America.

Prior to her work at Columbia, Clark was involved with the "New York Times History Project," an effort to compile oral histories of Times employees, and has served as a consultant for internationally award-winning documentary films. She has developed other oral history projects in New York, including programs for public and private schools and museums. She is vice-president and president-elect of the United States Oral History Association and has served on the Executive Council of the International Oral History Association. She teaches a graduate oral history course at Columbia and directs the Columbia University Summer Institute on Oral History. Clark has lectured and delivered seminars at Columbia University's Teachers College, Barnard College, Sarah Lawrence College, the City University of New York and many other institutions. In addition, she has lectured in Brazil and the Netherlands on topics related to oral history and memory.