The author of twenty books, David began his career in publishing as a literary agent and then moved to the editorial side, eventually earning an imprint at HarperCollins.

He comes from a publishing family: His parents and one of his sisters have been editors and agents, and another sister is both a children's librarian and children's book author.

A full-time writer author since the early 1990s, David's most recent book is the New York Times bestseller Michelle Obama: An American Story. He's also known for creating three acclaimed series: The Eyewitness series of first-person history, the Magical Worlds series for children, and the 10 Days series of biographies. More than two million copies of his books are in print in almost thirty languages.