Penguin Books Ltd, Harmondsworth, Middlesex, England
Penguin Books Pty Ltd, Ringwood, Victoria, Australia
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First published in the U.S.A. by Bramhall House 1962
Published in this country by Penguin Books Ltd 1967
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Copyright © Martin Gardner, 1962
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Designed by Ian E. Staunton
Made and printed in Great Britain
by Fletcher & Son Ltd, Norwich
Set in Monotype Modern Extended Series 7
This book is sold subject to the condition that it shall not, by way of trade or otherwise, be lent, re-sold, hired out, or otherwise circulated without the publisher's prior consent in any form of binding or cover other than that in which it is published and without a similar condition including this condition being imposed on the subsequent purchaser