The Outbreak of Rebellion is a historical book written by John George Nicolay, who served as President Abraham Lincoln's private secretary during the Civil War. The book provides a detailed account of the events leading up to the Civil War, focusing on the political and social tensions that culminated in the conflict. Nicolay's unique perspective as an insider in the White House during this period adds depth and immediacy to his narrative. 
Key aspects of the book include:
Secession Fever:
Nicolay describes the growing secessionist sentiment in the South and the political maneuvering to prevent the nation's division. 
Lincoln's Actions:
The book details Lincoln's efforts to manage the crisis, including his attempts to hold the border states and his response to the attack on Fort Sumter. 
First Battles:
Nicolay recounts the early battles of the war, including the Battle of Bull Run, which resulted in a chaotic Federal defeat and the first significant casualties. 
Personal Perspective:
As Lincoln's secretary, Nicolay offers a unique, firsthand account of the events and the key figures involved. 
Historical Significance:
The book is considered a valuable and insightful account of the Civil War's opening act, offering a glimpse into the political and social climate of the time.