On 29 October 1962, Cardijn wrote to his bishop, Cardinal Suenens, to inform him of his plan to visit Rome from 18-21 November, i.e. during the First Session of the Council.
In a file note signaling possible topics of discussion with Suenens, Cardijn mentions
1. An office for the International YCW in Rome for the duration of the Council
2. Publication of the book on the laity (?)
The book referred to is of course Cardijn’s long awaited book.
In his letter, Cardijn diplomatically avoids all mention of the Council itself, explaining his objectively as simply “to contact some Council Fathers who wish to speak to me about the international YCW.”
Archives Cardijn 1300