entire Purple Invasion sequence was reprinted in the 1990s by Pulp Review/High Adventure. In a rare bit of continuity for the pulp magazines, America did not find itself fully recovered in the first novel following the end of the Purple Invasion. Instead, America was still reeling from the bloody war, and found itself vulnerable to yet other would-be conquerors. A new serial dealt with the invasion of the US by an oriental power, obviously Japan, led by the "Yellow Vulture". This sequence started with issue #45, but was left unfinished with the magazine's cancellation due to the real war. Reprints In the 1960s, at the height of the camp craze and the success of the Doc Savage reprints (with their great James Bama covers), Corinth Press (an imprint of soft porn publisher Regency) issued eight Operator 5 adventures in paperback. Their low distribution made them collector's items almost from the very first, but possibly because of the poorly drawn covers, didn't generate enough sales to continue the series. Two later attempts were also made to reprint the stories. Currently, Steeger Books (www.steegerbooks.com) (formerly Altus Press) is reprinting the Operator 5 stories without the additional back-up material, but with the original covers and original interior artwork. These books — smaller than pulp size — are available as Print On Demand at the Steeger Books' website and also at Amazon.com. New stories In 2011, Moonstone began running new licensed stories of Operator 5 as a back-up feature in The Spider comic book, another Popular Publications character. These licenses would later be lost. In 2018, Altus Press started reprinting the Operator 5 novels. List of stories Operator #5 stories, giving volumes, numbers and dates: The Masked Invasion: (Vol. 1, #1; April 1934) Operator #5 comes up against an organisation that can turn day into night, that can black out whole cities, stopping all electricity and even battery powered devices from working, and causing airplanes to fall from the sky. The dread power of darkness is wielded throughout the nation and thousands flee the havoc and ruin that follows the Thirteenth Darkness, which promises ships full of thousands of killers landing in America to take over the country. The Invisible Empire: (Vol. 1, #2; May 1934) The Yellow Empire is near bankrupt so they decide to take over America and steal its gold. They have a camouflaged airborne fortress, "The Atlantis" which flies up