When Mary died in 1933, her brain was sent to a man named Ales Hrdlicka, the Smithsonian’s ‘bone doctor.’ Post reporters couldn’t find any records that Mary or her family consented to this. So what happened to Mary’s brain? And what is the extent of the Smithsonian’s “racial brain collection”?

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The brain of a Sami woman who died at a Seattle sanitarium in 1933. The cerebellum of an indigenous Filipino who died at the 1904 World’s Fair. These are just two of the brains collected over the last century by the Smithsonian’s first curator of the physical anthropology division, Ales Hrdlicka.

Now, a hundred years after this brain collection began, The Washington Post has pieced together the most extensive look at this work to date. And over the next two days on Post Reports, we’re bringing you the details of this reporting and of Ales Hrdlicka’s troubling legacy. In this first episode, we find out the extent of the collection, and we begin the search for the descendants of Mary, the Sami woman whose brain was taken in 1933.