A biohistoric investigation of a controversial museum collection  This book considers the vast collection of skulls amassed by Samuel Morton in the first half of the nineteenth century. Craniometric studies undertaken by this Philadelphia physician and natural historian, as previous writers have noted, advanced scientific racism. In Becoming Object, Pamela Geller shows that while the characterization is accurate, it is also oversimplified. Geller uses a biohistoric approach, which examines skeletal remains and archival sources, to take a close look at the times in which Morton lived, his work, and its complicated legacy. During a pivotal moment in US history—an interlude between the nation’s cohesion and its civil unraveling—Morton and colleagues encouraged and developed biomedical interventions, public health initiatives, and scientific standards. Yet they also represented certain populations as biologically inferior; diseases were tied to non-white races, suffering was gendered female, and poverty was presumed inherited. Efforts by Morton and colleagues made it easier to rationalize the deaths of disenfranchised individuals, collect their skulls from almshouse hospitals and battlefields, and transform them into objects. Ultimately, these men’s studies of diseases and skulls contributed to an understanding of American citizenship that valued whiteness, Christianity, and heroic masculinity defined by violence. Though medicine came to repudiate Morton’s work, his thinking became foundational for anthropology. The Morton Collection, a tangible reminder of his legacy, has become a barometer of the discipline’s relationship to white supremacy and colonialism. To advance today’s decolonial efforts, Becoming Object turns to the Morton Collection to document the diverse lives excluded from the body politic. To recount their stories, as Geller does, is to counter official histories, while the silences that remain hint at the subtle machinations of necropolitics.