Benjamin Banneker
1731–1806
Astronomy, almanacs, and federal-district survey work
What Benjamin contributed
Performed astronomical calculations, published almanacs, and assisted the survey team establishing the District of Columbia's boundaries.
The story
Banneker was a free Black mathematician, astronomer, author, and surveyor. Popular claims that he single-handedly designed Washington, D.C., are inaccurate; his genuine contributions remain substantial.
Why it matters
His documented scientific and mathematical work challenged racist claims about Black intellectual ability in the early United States.



