What to read after Armageddon--2419 A.D. and The Airlords of Han?

Meet fiction's great pioneer of space exploration in his very first adventures. The swashbuckling character who ultimately became world-famous as Buck Rogers made his debut in the 1920s in these two tales from the legendary pulp magazine Amazing Stories. The intrepid voyager, who emerged from a state of suspended animation into the twenty-fifth century, became a star of movies, radio, television, and video games and inspired a host of imitators.
Armageddon — 2419 A.D introduces World War I veteran Anthony Rogers and the peculiar circumstances under which he awakens, like Rip Van Winkle, to a strange new world. North America has been overrun by invaders from the East who imposed their own civilization, condemning the natives to a furtive existence in the forests and hills. Rogers encounters a rebel unit of Americans and readily joins their attempts to rebuild their society, using his wartime experience to help mount a revolt against their oppressors. This futuristic fantasy — accompanied by its sequel, The Airlords of Han — offers rollicking adventures and remarkably prescient predictions of later technological advances.