Nine by Laumer

Enter the future world of Keith Laumer, one of the most creatively compelling minds in sf. Does the System threaten to punch-card you? Watch Mart Maiden, forced school dropout, try to beat an infallible system on a "Placement Test." Anxious to escape small-town living? Take "A Trip to the City" with Bret Hale. Beware the frightening world that awaits you at the end of an all too short train ride. Feel like a prisoner in your own home? Flora Trimble has been inside "The Walls" for so long that she doesn't even know if there's a world existing beyond her front door. There's a world beyond yours it's all here.

The Universe, According to Laumer 1967 essay by Harlan Ellison

Hybrid 1961 story

End as a Hero 1963 novelette

The Walls 1963 story

Dinochrome 1967 story (aka Combat Unit)

Placement Test 1964 novelette

Doorstep 1961 story

The Long Remembered Thunder 1963 novelette

Cocoon 1962 story

A Trip to the City 1967 novelette by (aka It Could Be Anything)