Spiritualist medium Helen Duncan was photographed emitting ectoplasm, supposedly proof of her ability to contact the dead.
In the 19th century, students at American medical schools stole the corpses of recently-buried African Americans to be used for dissection.
In 1854, Elizabeth Jennings rode the streetcar of her choice, in an early civil rights protest that led to desegregating public transportation in NYC.
Old houses in Ireland often have horse skulls buried beneath the floors, but folklorists and archaeologists disagree on exactly why.
Susan LaFlesche Picotte was first Native American to be licensed to practice medicine in the U.S. She opened her own hospital, but didn't live to run it.