Notes: •This is a facsimile reprint of the original science fiction pulp magazine. •Date of publication Amazon.com. •In the column Reviewing the Science Fiction Fan Publications are fanzines from Olon F. Wiggins, James V. Taurasi and Sam Moskowitz. •All artwork is uncredited, but the artists have signed their work. •The Black Flame also has three spot illustrations that are portraits of three of the novel's characters. These are not signed, but look to also be by Wesso. •They Changed the World by Jack Binder is a two page illustrated comic non-fiction strip about Albert Einstein. •The Eternal Man is reprinted as a story in Thrilling revolving Scientifiction's Hall of Fame series. •Thrills in Science are one page biographies of Joseph Priestly, Wilhelm Konrad Roentgen, Dr. Robert Koch and Jeremiah Horrocks respectively. •The Ether Vibrates is the letter column that also has letters by Arthur J. Burks, Isaac Asimov and others. Only well known sf personalities, and letters longer than one paragraph are listed. Eando Binder is signed by both Earl and Otto Binder.