Adrienne C. Thomas is a former acting Archivist of the United States.[1] She assumed the position of Acting Archivist when the ninth Archivist, Allen Weinstein, announced his resignation on December 7, 2008, effective December 19. Weinstein explained that he was resigning for health reasons.[2][3] She was succeeded by David Ferriero, who was confirmed by the U.S. Senate on November 6, 2009, as the tenth Archivist of the United States.[4] After 40 years with the National Archives, Ms. Thomas retired on April 1, 2011.[5]
^"National Archivist Allen Weinstein Resigns" (Press release). National Archives and Records Administration. December 9, 2008. Archived from the original on December 17, 2008. Retrieved December 18, 2008. On December 7, historian Allen Weinstein, Archivist of the United States, submitted his resignation to the President, effective December 19, 2008. Professor Weinstein, who has Parkinson's disease, cited health reasons for his decision.