Now It Can Be Told: How Neil Sheehan Got the Pentagon Papers

There was one story Neil Sheehan chose not to tell. It was the story of how he had obtained the Pentagon Papers, the blockbuster scoop that led to a 1971 showdown between the Nixon administration and the press, and to a Supreme Court ruling that is still seen as a milepost in government-press relations.

From the moment he secured the 7,000 pages of classified government documents on the Vietnam War for The New York Times, until his death on Thursday, Mr. Sheehan, a former Vietnam War correspondent and Pulitzer Prize-winning author, declined nearly every invitation to explain precisely how he had pulled it off.

In 2015, however, at a reporter’s request, he agreed to tell his story on the condition that it not be published while he was alive. Beset by scoliosis and Parkinson’s disease, he recounted, in a four-hour interview at his home in Washington, a tale as suspenseful and cinematic as anyone in Hollywood might concoct.

The Pentagon Papers, arguably the greatest journalistic catch of a generation, were a secret history of United States decision-making on Vietnam, commissioned in 1967 by the secretary of defense. Their release revealed for the first time the extent to which successive White House administrations had intensified American involvement in the war while hiding their own doubts about the chances of success.

Recounting the steps that led to his breaking the story, Mr. Sheehan told of aliases scribbled into the guest registers of Massachusetts motels; copy-shop machines crashing under the burden of an all-night, purloined-document load; photocopied pages stashed in a bus-station locker; bundles belted into a seat on a flight from Boston; and telltale initials incinerated in a diplomat’s barbecue set.

He also revealed that he had defied the explicit instructions of his confidential source, whom others later identified as Daniel Ellsberg, a former Defense Department analyst who had been a contributor to the secret history while working for the Rand Corporation. In 1969, Mr. Ellsberg had illicitly copied the entire report, hoping that making it public would hasten an end to a war he had come passionately to oppose.

Contrary to what is generally believed, Mr. Ellsberg never “gave” the papers to The Times, Mr. Sheehan emphatically said. Mr. Ellsberg told Mr. Sheehan that he could read them but not make copies. So Mr. Sheehan smuggled the papers out of the apartment in Cambridge, Mass., where Mr. Ellsberg had stashed them; then he copied them illicitly, just as Mr. Ellsberg had done, and took them to The Times.