The Postal Service was plagued by patronage scandals for part of its history: as often happened with other political appointments, lucrative postal positions were sometimes doled out as favors. But, just as the U.S.P.S. had always been for its customers, it eventually became one of the nation’s most egalitarian institutions for employment. Postal alumni include Abraham Lincoln and John Brown, Richard Wright and William Faulkner, John Prine and Brittany Howard—men and women from every state, from all circumstances, with little education or lots of it, working for a few hours a week or decades of full-time service, as clerks at the office, city carriers, rural carriers, tractor-trailer drivers, postal inspectors, sorters, delivery specialists, and postmasters. Today, the U.S.P.S. comprises nearly a quarter of the entire federal workforce. Nearly half of its six hundred and thirty-three thousand employees are people of color, and more than a hundred thousand are veterans. Together, the workers staff thirty-two thousand post offices and nearly five hundred processing and distribution centers. They handle a hundred and forty-two billion pieces of mail each year—nearly half of all the mail in the entire world.