The sole remaining Brown v. board plaintiff has died.

Zelma Henderson is not remembered (by her son) as being an imposing person under normal circumstances, according to her son. But when she was passionate about something – watch out.

Zelma Henderson signed on to become a part of Brown v. the Topeka Board of education, in 1950. Brown would become a part of several cases which would lead to the overturning of legalized school segregation in 1954. While it took a few years/decades for the South (and parts of the midwest) to get the memo, it was still a watershed moment in the history of this country.

Zelma Henderson died in Topeka, Kansas on Tuesday at the age of 88.