As early as 1952 , other writers began to draw on her research to discredit Chambers .
In The Nation , she once called her unpublished book Whittaker Chambers : Agent Provocateur .
As early as 1952 , other writers began to draw on her research to discredit Whittaker Chambers .
In The Nation , she once called her unpublished book Whittaker Chambers : Agent Provocateur .