Juveniles And Adults

When we were teenagers, we knew that some works of fiction were "juvenile" whereas others were "adult" but we read them all anyway. (Now there is a "Young Adult" category.)

Let's consider:

four Campbell future historians (Heinlein, Asimov, Blish and Anderson);
one of their successors, SM Stirling;
their ideological opponent, CS Lewis.

Here again we appreciate Poul Anderson by appreciating his context. He paints a big picture. Here is an even bigger picture.

Heinlein's Future History is adult whereas his Scribner Juveniles are, obviously, juvenile. However, five early Scribner Juveniles share an interplanetary background with each other and with the "Green Hills of Earth" period of the Future History. Indeed, "The Green Hills of Earth" is quoted in both.

The same robots and extrasolar colonies appear in two series by Asimov, one adult, the other juvenile.

One volume of Blish's Cities In Flight Tetralogy and three novels in his Haertel Scholium are juveniles.

A few short works by Anderson are juveniles, including three stories in his Technic History and one in his Time Patrol series.

Lewis's Ransom Trilogy is adult sf whereas his Narnia Chronicles are juvenile fantasies. However, there are striking parallels between the two series.

In Stirling's A Meeting At Corvallis, the accounts of Rudi Mackenzie's experiences are a child hostage are excellent juvenile adventure fiction.

Thus, six authors present an interesting interplay between juvenile and adult fiction.