Benjamin Banneker -----Author of Almanacs

Benjamin Banneker

Title page of a Baltimore edition of Banneker's 1792 almanac.

 Banneker made astronomical calculations that predicted eclipses and planetary conjunctions for inclusion in an ephemeris for the year of 1792. 

He placed the ephemeris and its subsequent revisions in a six-year series of almanacs that printers agreed to publish and sell.

The almanacs, some of which appeared in several editions during the same year, were printed in at least six cities in four states:   

 Baltimore

 Philadelphia 

 Wilmington, Delaware 

 Alexandria, Virginia

 Petersburg, Virginia 

 Richmond, Virginia