Benjamin Banneker was a free African-American almanac author, surveyor, landowner and farmer who had knowledge of mathematics and natural history. Born in Baltimore County, Maryland, to a free African-American woman and a former slave, Banneker had little or no formal education and was largely self-taught. He became known for assisting Major Andrew Ellicott in a survey that established the original borders of the District of Columbia, the federal capital district of the United States.

Our nation’s capital would not be the same if it wasn’t for Benjamin Banneker, the Black architect hired by George Washington, the first President of the United States, to design the city of Washington, DC.

Banneker’s knowledge of astronomy helped him author a commercially successful series of almanacs. He corresponded with Thomas Jefferson on the topics of slavery and racial equality, Jefferson having earlier drafted the United States Declaration of Independence. Abolitionists and advocates of racial equality promoted and praised Banneker’s works.

Although a fire on the day of Banneker’s funeral destroyed many of his papers and belongings, one of his journals and several of his remaining artifacts are presently available for public viewing. Parks, schools, streets and other tributes commemorate him and his works. However, many accounts of his life exaggerate his accomplishments or attribute to him the achievements of others. 

Banneker’s talents and intelligence eventually came to the attention of the Ellicott family, entrepreneurs who had made a name and fortune by building a series of gristmills in the Baltimore area in the 1770s. George Ellicott had a large personal library and loaned Banneker numerous books on astronomy and other fields.

In 1791, Andrew Ellicott, George’s cousin, hired Banneker to assist in surveying territory for the nation’s capital city. He worked in the observatory tent using a zenith sector to record the movement of the stars. However, due to a sudden illness, Banneker was only able to work for Ellicott for about three months. 

Banneker’s true acclaim, however, came from his almanacs, which he published for six consecutive years during the later years of his life, between 1792 and 1797. These handbooks included his own astronomical calculations as well as opinion pieces, literature and medical and tidal information, with the latter particularly useful to fishermen. Outside of his almanacs, Banneker also published information on bees and calculated the cycle of the 17-year locust.

His significant accomplishments include the successful prediction of a solar eclipse, publishing his own almanac, and the surveying of Washington, D.C. Banneker spent most of his life on his family’s 100-acre farm outside Baltimore.

Banneker’s outspokenness with regard to the issue of slavery earned him the widespread support of the abolitionist societies in Maryland and Pennsylvania, both of which helped him publish his almanac.