. Why is there a DC high school named for Benjamin Banneker? If you read this book, you will find out that this local-boy-made-good was a free African-American tobacco farmer who was born and lived his entire life just outside of what is now known as Ellicott City, MD. He had an early interest in mathematics, science, and astronomy, and with a pocket knife and some other tools built one of the first clocks ever made in the 13 American colonies, out of wood. For this he became locally famous, and made friends with some of the younger members of the Ellicott family, who were Quakers, anti-slavery advocates, and owners of some mills in what was then known as Ellicott's Mills. They lent him some mathematics and astronomy texts, and eventually gave him a telescope. He taught himself a considerable amount of mathematical and observational astronomy, and eventually began, around the age of 60, to publish an almanac detailing the locations of the planets and the Moon for the coming year, as well as predicting eclipses and sunrises and sunsets - all based on laborious and lengthy calculations and diagrams that he made himself.
Eventually, he was tapped for an even greater role - he was hired to help Major Andrew Ellicott in the astronomical and chronometric portion of the most important surveying job of his day - laying out the 10 mile by 10 mile square that eventually became the District of Columbia.
This very well-researched book also helps lay to rest some of the myths about what Banneker did and did not do during his most unusual lifetime; unfortunately, many websites and books continue to propagate these myths, probably because those authors do not understand what Banneker actually accomplished. Many state, for example, that Banneker's clock was an exact copy of one he saw, which is not true -- he figured out the mathematics and physics on his own for a clock made out of wood, instead of trying simply to copy the small pocket watch that he was lent to observe. However remarkable this clock was, it was not the first clock made in America. Other sources continually repeat the myth that when Pierre l'Enfant was fired from the job of laying out the new Federal City, Benjamin Banneker recreated l'Enfant's plans from memory. Bedini lays this myth to rest and shows us that what Banneker actually did in terms of astronomical work was actually much more difficult -- in fact, it was in the league of the work done by Mechain and Delambre to measure the length of the meridian that passes through Dunkirk, Paris and Barcelona, with the purpose of defining the meter for all time. But that's another story -- but if you want to read about it, check out Ken Alder's The Measure of All Things: The Seven-Year Odyssey and Hidden Error that Transformed The World.
If you read this book, you will also see some facsimiles of his widely-known almanac, some of his correspondence with Thomas Jefferson where he vainly attempts to convince the future president that African Americans are just as smart as European Americans, photographs of some of the equipment that he used, and so on. Unfortunately, Banneker's house, and all of its contents (including the wooden clock and many of his astronomical workbooks) burned to the ground on the day of his funeral.
