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The Johnstown Flood was David McCullough's debut publication. This book recounts the catastrophic 1889 flood that devastated the Pennsylvania town of Johnstown. McCullough's meticulous research and vivid storytelling bring the disaster to life, exploring its causes, human impact, and the resilience of the survivors. The Johnstown Flood established McCullough as a master of narrative history, a reputation he has maintained throughout his acclaimed career.