"Un grand bourgmestre et la ville qu'il aima" (in French). Europeana. 1939. Retrieved 28 January 2014.The oldest film material in this movie (9:03 - 9:49 min), is about the burial of the coffin of the Unknown Soldier at the monument to the Congress Column on November 11, 1922.
Régie des Bâtiments (10 April 2009). "Colonne du Congrès". regiedesbatiments.be (in French). Archived from the original on 1 February 2014. Retrieved 26 January 2014.
Régie des Bâtiments (10 April 2009). "Colonne du Congrès". regiedesbatiments.be (in French). Archived from the original on 1 February 2014. Retrieved 26 January 2014.