Cleves, 3 June 1942 Letter to Henricus Brandsma
Dachau, 12 July 1942 Letter to his brother in law and sister
Den Haag, 6 May 1942 Letter to his brother in law and sister etc.
Cleves, 28 May 1942 Letter to Father Prior etc.
Amersfoort, 1 April 1942 Letter to Father Prior etc.
Amersfoort, 16 March 1942 Letter to Most Reverend Father Prior etc.
Scheveningen, 5 March 1942 Letter to Most Rev. Fr. Prov etc.
Scheveningen, 12 February 1942 Letter to Fr. Prov, Fr. Prior, etc.
Cleves, 12 June 1942 Letter to the German Sicherheitsdienst
1904 Letter
1905 Letter
Nijmegen, 23 September 1941 Letter to the Most Reverend Archbishop etc.
1942 Letter