The keynote speakers were: Many notable science fiction authors were also in attendance, including Spider and Jeanne Robinson, David Gerrold, Frederik Pohl, and John Scalzi.
The program included a track devoted to space travel with emphasis on commercial endeavors, since Heinlein is revered by many in the private space community, notably for his book The Man Who Sold the Moon.
Some programming began on the evening of July 5 with selections of Heinlein's biography read by his official biographer, William Patterson.
Saturday evening featured a gala of entertainment including a rare video greeting from Sir Arthur C. Clarke in Sri Lanka, one of the last he recorded before his death the following year.
The Campbell Conference topic for Saturday's round-table discussion was, "Robert A. Heinlein, Jack Williamson, and 21st Century Science Fiction."