From the Archives: Season Two, Episode Two

The four physicists who took part in Feb. 1950 NBC Radio roundtable, warning about the dangers of an H-bomb

Pamphlet from University of Chicago/NBC Radio roundtable on the risks around the Hydrogen bomb

News article about the proposition of depopulating the East Coast given fears of an H-Bomb attack, Feb. 27, 1950

Front-page headline from Feb. 27, 1950: "H-Bomb Could Be Turned Into World Suicide Weapon"

Physicists Einstein and Szilard write a letter to the White House, warning of the dangers posed by nuclear energy, August 1939

Physicist Leo Szilard, circa 1950, who warned about the dangers of a potential cobalt bomb

Francis Parker Yockey FBI Photo

Black and white photo of Francis Parker Yockey

Archival material on Francis Parker Yockey (alias Ulick Varange) held in the Harold Keith Thompson Collection at Stanford University

FBI file with details of Francis Parker Yockey's activities and residence in Egypt, February 1953

Portion of Francis Yockey's FBI file regarding his alleged efforts to sell the cobalt bomb, February 1955

FBI notice to customs officials asking that the Bureau be notified if Yockey tries to enter or leave the country

Egyptian President Gamal Abdel Nasser pictured in 1956

FBI photo of the eight Nazi saboteurs connected to Operation Pastorius

FBI Special agents investigate a site in Ponte Vedra, Florida, where one of the Nazi saboteurs said his team had buried their sabotage equipment and uniforms, 1942

Four of the eight Nazi saboteurs involved in Operation Pastorius shown in court, 1942

Nazi Saboteur and friend of Francis Parker Yockey, Herbert Haupt (left), awaiting court proceedings, 1942

Armed soldiers guard the ambulances carrying the bodies of six of the executed Nazi saboteurs involved in Operation Pastorius

Portion of Francis Yockey's FBI file detailing his ultra-right ties as well as his connection to Nazi saboteur Herbert Haupt

An arsenal of guns and ammunition seized from a Chicago area farm linked to Nazi sympathizers in America, including Francis Yockey, September 1942

An advertisement for a protest in defense of Silver Shirt members who were arrested for damaging a Jewish department store in Chicago. "Frances Parker" Yockey is billed as a headline speaker, 1939

Right-wing propaganda distributed after Silver Shirt members were arrested for throwing bricks through the windows of a Jewish department store in Chicago, 1939

The International Military Court at Nuremberg, Germany convenes for the opening day of the trial for the major Nazi war criminals. The accused are seen on the lower right hand side. The press cover the case from a gallery in the back of the room, November 1945

Members of Hitler's inner circle sit in the witness box for the war crimes trial in Nuremberg, Germany. L-R (front row): Hermann Goering, Rudolf Hess, Joachim von Ribbentrop and Wilhelm Keitel, November 1945