Just that title! How could anyone not want this?
Edison’s Conquest of Mars
Edison’s Conquest of Mars is an 1898 science fiction novel by American astronomer and writer Garrett P. Serviss. It was written as a sequel to Fighters from Mars, an unauthorized and heavily altered version of H. G. Wells’s The War of the Worlds. It has a place in the history of science fiction for its early employment of themes and motifs that later became staples of the genre.
The book was endorsed by Thomas Edison, the hero of the book, though not by Wells. Set after the devastating Martian attack in the previous story, the novel depicts Edison leading a group of scientists to develop ships and weapons, including a disintegration ray, for Earth’s defense.
Free at Project Gutenberg.
Additional:
ZPi Blog: Edison’s Conquest of Mars