The 750,000 documents identify the vast spy network managed by the OSS, which later became the CIA. President Franklin Roosevelt created the OSS, the country's first centralized intelligence operation.
The OSS files offer details about other agents, including Supreme Court Justice Arthur Goldberg, major league catcher Moe Berg, historian Arthur Schlesinger Jr. and film actor Sterling Hayden.
Other notables identified in the files include John Hemingway, son of author Ernest Hemingway; Kermit Roosevelt, son of President Theodore Roosevelt; and Miles Copeland, father of Stewart Copeland, drummer for the band The Police.