The Great Halifax Explosion

This book can be divided into four parts: the lead-up to the disaster, the disaster, the immediate afterwards, and the long-term afterwards. The first part, the lead-up, is quite repetitive, with facts and elements repeated a minimum of three times (per my personal counting). Don't let this stop you! The rest of the book is fantastic, by turns horrifying and sad and uplifting, and at every point fascinating.