After returning to Ellicott's Mills, 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; and Richmond, Virginia
The title page of a Baltimore edition of Banneker's 1792 Pennsylvania, Delaware, Maryland and Virginia Almanack and Ephemeris stated that the publication contained:
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