Warren graduated from Weequahic High School in 1956.   He then went on to earn a BA and an  MA in History from New York University.  He spent his life as a historian, teacher, and author. Warren served as President of MDM Technologies, a direct mail company, was a history instructor at the Newark College of Engineering, Executive Director of the Newark Committee on Full Employment, and a visiting Professor of Newark History at Rutgers Newark. He has held elected positions as Chairman of the West Orange Democratic County Committee and the NJ State Democratic Committee.  In addition, he served on the Boards of multiple organizations, including the YIVO Institute for Jewish History, the New Jersey Historical Society, and the Jewish Historical Society NJ.  He is also a member of the Newark Congress of Racial Equality and was Chairman of the Newark Archive Project.  Since 2002 when Warren co-founded the Newark History Society, the organization has been retelling the story of the City of Newark with more than 70 free public programs for more than 15 years.  Warren has authored numerous articles about Newark and politics for the NJ Italian Tribune, the New Jersey Jewish News and the Newark History Society, and is the author of the book, "Nazis in Newark."