The New York Times and the Post, and was covered on the CBS and NBC national nightly news. Hersh next interviewed Paul Meadlo, a soldier who admitted that he had killed dozens of civilians on the orders of Calley. Meadlo's mother told Hersh that she "sent them a good boy and they made him a murderer". Hersh's third article was syndicated by Dispatch on November 25, and that night an interview with Meadlo by Mike Wallace on the CBS News program 60 Minutes was broadcast on national television. The White House acknowledged the massacre for the first time the next day, and the Army appointed General William R. Peers to head an official commission investigating it. Hersh proceeded to visit 50 witnesses over the next three months, 35 of whom agreed to talk. His fourth article, syndicated on December 2, revealed random killings of civilians in the days before the massacre; a fifth article was published weeks later. Ten pages of Haeberle's photos were printed in Life magazine on December 5. Hersh's reporting garnered him national fame, and encouraged the growing opposition to the war in the U.S. However, he was also attacked by some in the press and government, who questioned his work and motivations. An op-ed column in the Times by James Reston asked: "Whatever happened in the massacre, should it be reported by press, radio and television, since clearly reporting the murder of civilians by American soldiers helps the enemy, divides the people of this country, and damages the ideal of America in the world?" South Carolina Republican Representative Albert Watson said, "this is no time to cast aspersions on our fighting men, the President and ourselves for that matter, as some members of the national news media and a few demagogues are doing". The reveal of the massacre changed American media coverage of the war, which was restrained and had limited independence from official sources in its reporting of the conflict until 1967; after the exposure of My Lai, the major newspapers began reporting on other U.S. atrocities in Vietnam. Hersh won the 1970 Pulitzer Prize for International Reporting. He later wrote to Robert Loomis, the editor of his 1970 book on the massacre, My Lai 4: On March 14, 1970, the Peers Commission submitted to the Army a secret report that included 20,000 pages of testimony from over 400 witnesses. One of Hersh's sources leaked