History and Evidence of the Passage of Abraham Lincoln from Harrisburg, Pa., to Washington, D.C., on the 22D and 23D of February, 1861

'History and Evidence of the Passage of Abraham Lincoln from Harrisburg, Pa., to Washington, D.C., on the 22D and 23D of February, 1861' by Allan Pinkerton provides a detailed account of Abraham Lincoln's journey from Harrisburg to Washington in 1861. The book includes letters from key figures like Gov. Curtin, H. E. Thayer, and Andrew Wynne, shedding light on the conspiracy to assassinate Lincoln and the collaborative efforts to ensure his safety. Through these primary sources, readers gain insight into the challenges faced and the measures taken to protect the President-elect during a critical period in American history.