The Halifax Explosion occurred on Thursday, December 6, 1917, when the city of Halifax, Nova Scotia, Canada, was devastated by the detonation of the SS Mont-Blanc, a French cargo ship that was fully loaded with wartime explosives. The Mont-Blanc detonated after colliding with the Norwegian SS Imo in a part of Halifax Harbour called "The Narrows". About 2,000 people were killed by debris, fires, and collapsed buildings, and it is estimated that over 9,000 were injured.
World War One Halifax explosion: Unseen pictures revealed
A victim of the Halifax Explosion sits up in a hospital bed, likely at Pine Hill Convalescent Hospital where injured babies were treated. In 2008 we learned the girl was Kathleen Malloy. (City of Toronto Archives)