The Robert W. MacKenzie Papers (approximately 1950-2010) contain the personal papers of Robert MacKenzie and materials documenting the long-term effects of atomic testing. The collection contains photographs, material documenting the Radiation Exposure Compensation Act deals, surveys about veterans and their children with diseases, the Curtiss Marines, letters and correspondence, audiovisual material, and original drawings and cartoons of ships drawn by MacKenzie. MacKenzie was stationed on a ship during Castle Bravo, the first in a series of high-yield thermonuclear weapon design tests conducted by the United States at Bikini Atoll, Marshall Islands, as part of Operation Castle. Detonated on March 1, 1954, the device remains the most powerful nuclear device ever detonated by the United States.