Destiny of the Republic by Candice Millard
From the publisher: “James A. Garfield was one of the most extraordinary men ever elected president. Born into abject poverty, he rose to become a wunderkind scholar, a Civil War hero, and a renowned and admired reformist congressman. Nominated for president against his will, he engaged in a fierce battle with the corrupt political establishment. But four months after his inauguration, a deranged office seeker tracked Garfield down and shot him in the back.
“But the shot didn’t kill Garfield. The drama of what happened subsequently is a powerful story of a nation in turmoil. The unhinged assassin’s half-delivered strike shattered the fragile national mood of a country so recently fractured by civil war, and left the wounded president as the object of a bitter behind-the-scenes struggle for power—over his administration, over the nation’s future, and, hauntingly, over his medical care. A team of physicians administered shockingly archaic treatments, to disastrous effect. As his condition worsened, Garfield received help: Alexander Graham Bell, the inventor of the telephone, worked around the clock to invent a new device capable of finding the bullet.”