The Petrov Document labelled ’H’ was written by Press Secretary to Dr Evatt, Fergan O’Sullivan. It is a series of pen-sketches of the 1952 Press Gallery. Fergan O’Sullivan claimed to have written Document H to help the Soviet Union target journalists who might publish pro-Soviet articles. In fact Moscow used the information in an effort to identify potential agents. No one named in Document H was found to be a Russian spy.
That one justified an entire volume of a Royal Commission.