The Last Lunacy (Unabridged‪)‬

Postwar Earth is not only crumbling, but it's inhabited by "The Blues"...working class poor who didn't belong to the elite who escaped to the moon. And...they're all men. A female ruling class runs the moon, but every once in a while they have to descend to maintain the equipment...and this time, one gets captured, only to find she unwittingly aids the wave of ships being prepared to invade the moon.