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Heinlein wrote a series of books under contract to Scribners that were aumed at younger readers, pre-teen and teen. Today we would call them Young Adult, but back then they were called Juveniles. But even an adult reader can enjoy many of these books. Because they were aimed at younger readers, he could not always be as explicit as he might have liked, but if you pay attention you just might noticed he slipped in something subversive.

Heinlein: The Juveniles

As a boy I read voraciously. I remember my mother organizing weekly trips to the town library, where I would load up on books, and I quickly became focused on Science Fiction, along with the usual stuff kids read, like the Hardy Boys, Tom Swift, and the Walter Farley horse books. But the idea of going into space grabbed me very early. And one of the first authors I read was Heinlein. He had taken a leave from publishing during World War II, when he was doing research at the Philadelphia Navy Yard. But when the war was over, he set out to move beyond the “pulps” and expand the market for his stories. And one big market for him was what were called “juveniles” at the time, and would today be called “Young Adult”. I was reading adult fiction by the time I was 11 or 12, but before that (and even after that, in fact) I read these Heinlein novels with great relish.

Heinlein’s target audience for these novels was teenage boys. He did a few stories aimed at girls, but mostly he wrote for boys. And these were mostly “coming of age” stories where the teenage protagonist has adventures, and as a result grows and develops. They are very loosely related via some internal references, but should really be thought of as stand-alone stories. They also in some cases have references to his other stories, including the Future history stories. He wrote 13 of these novels, one per year, from 1947 to 1959. The series was published by Scribners until the last one was rejected by them. Heinlein then published it with a different publisher, and stopped writing these novels altogether in favor of more adult fiction. The novels roughly form a progression telling the story of space exploration. It starts with a trip to the Moon, then Venus, Mars, Jupiter’s moon, and so on until we reach the Lesser Magellanic Cloud.

• Rocket Ship Galileo (1947) – While readable, this initial effort was not up to Heinlein’s later standards. The plot concerns three teenagers who assist an uncle to build a rocket ship and go to the Moon. When they get there they discover Nazis have already arrived. The Nazis try to kill the group, but they succeed in turning the tables, stealing the Nazi ship, and returning to Earth as heroes. This novel became the basis (loosely) for the movie Destination Moon (1950), and I personally would consider the movie to be superior to the novel. It is also worth noting that the theory brought up in Blowups Happen reappears in this novel. They find evidence of an ancient Lunar civilization that was destroyed, and theorize that the craters on the moon were caused by the explosion of nuclear reactors that caused the extinction of the civilization.
• Space Cadet (1948) – This was in part the inspiration for the

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