The Destiny of the Republic by Candice Millard

From Publishers Weekly; "This rendering of an oft-told tale brings to life a moment in the nation's history when access to the president was easy, politics bitter, and medical knowledge slight. James A. Garfield, little recalled today, gained the Republican nomination for president in 1880 as a dark-horse candidate and won. Then, breaking free of the sulfurous factional politics of his party, he governed honorably, if briefly, until shot by an aggrieved office seeker. Under Millard's pen, Garfield's deranged assassin, his incompetent doctors (who, for example, ignored antisepsis, leading to a blood infection), and the bitter politics of the Republican Party come sparklingly alive through deft characterizations. Even Alexander Graham Bell, who hoped that one of his inventions might save the president's life, plays a role. Millard also lays the groundwork for a case that, had Garfield lived, he would have proved an effective and respected chief executive. His death didn't greatly harm the nation, and Millard's story doesn't add much to previous understanding, but it's hard to imagine its being better told."