I have assigned Atlas Shrugged in some of my seminar classes. For Randians, and, heck, for all, a great book with quasi-Randian principles in a novel format (and much shorter than "Atlas Shrugged") is Kyle Mills' "Smoke Screen." I use that book in my Business and Economic History class for "what if" questions.
Rather then Voegelin? I recall that you objected to Voegelin's writings because it did not have mass appeal. As a teacher one soon discovers that ideas under the rubric of mass appeal are most useful because those ideas give the impression that the communicants are being educated. Sometimes very attractive to Orcs and Hobbits.