This is a first printing of The Fantastic Universe Omnibus edited by Hans Stefan Santesson and published in 1960 by Prentice-Hall.  While book club editions are plentiful, the true first is uncommon.

This book is the contributor's copy from the library of L. Sprague de Camp.

Contents:

Introduction by Lester del Rey
First Law by Isaac Asimov
She Only Goes Out at NIght by William Tenn
The Pacifist by Arthur C. Clarke
The Bounty Hunter by Avram Davidson
The Muted Horn by Dorothy Salisbury Davis
A Way of Life by Robert Bloch
In Lonely Lands by Harlan Ellison
Fall of Knight by A. Bertram Chandler
Sit by the Fire by Myrle Benedict
A Thing of Custom by L. Sprague de Camp
Exile from Space by Judith Merril
Mex by Larry M. Harris
The Amazing Mrs. Mimms by David C. Knight
My Father, the Cat by Henry Slesar
Title Fight by William Campbell Gault
The Golden Pyramid by Sam Moscowitz
The Robot Who Wanted to Know by Felix Boyd
Road to Nightfall by Robert Silverberg
The Velvet Glove by Harry Harrison

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