To Father Prior etc – 28 May 1942 November 2020 By Bos (TBI) Cleves, 28 May 1942 Letter to Father Prior etc.
To Father Prior etc – 1 April 1942 November 2020 By Bos (TBI) Amersfoort, 1 April 1942 Letter to Father Prior etc.
To Most Reverend Father Prior etc. 16 March 1942 November 2020 By Bos (TBI) Amersfoort, 16 March 1942 Letter to Most Reverend Father Prior etc.