Dr. John D. Warner, Jr. has been the Archivist of the Commonwealth of Massachusetts for more than twenty-five years. He received his PhD from Boston College, where he specialized in nineteenth-century American history. He holds a master's degree in Library and Information Science from the University of Rhode Island and studied international politics at Georgetown University, where he received a BSFS degree. Dr. Warner also served in the US Coast Guard Reserve for thirty years before retiring in 2018 as the Chief of the Waterside Security Division, Port Security Unit 301 (Cape Cod).

