''No comment.''
Hearings before the President's Commission on the Assassination of President John F. Kennedy (1964)
https://archive.org/search.php?query=Investigation%20of%20the%20assassination%20of%20President%20John%20F.%20Kennedy
''I have always been a voracious reader of what I call invisible literatures - scientific journals, technical manuals, pharmaceutical company brochures, think-tank internal documents, PR company position papers - part of that universe of published material to which most literate people have scarcely any access but which provides the most potent compost for the imagination'' J.G.Ballard
''No comment.''