Raymond Z. Gallun, The Revolt of the Star Men
“ Only half interestedly he wondered when Hekalu Selba would strike. He knew that it would be very soon. In vain he tried to tell himself that he had no real proof of the Martian's power, but always a vision of those black horrors swooping down like living thunderbolts upon Taboor or New York or Chicago made him realize how futile would be any resistance that the planets could offer.Even if there were but fifteen hundred Space Men, and Shelby was certain as actual knowledge that there were many more, and even if they must fight with their bare hands, still they would be a formidable menace. ”
