Cover of Level 7

Level 7

Mordecai Roshwald

First published	1959
Publisher	McGraw-Hill
Format	Hardcover
Type	Novel
Pages	186
Price	$3.75

Price from Tuck Tuck and Clute give the date as 1960. Reginald1 gives it as 1959.

Year	Reviewer	Publication
1960	Leslie Flood	Science Fantasy, April 1960
1960	Damon Knight	The Magazine of Fantasy and Science Fiction, July 1960
1960	Martine Thomé	Fiction, #84
1961	Floyd C. Gale	Galaxy Magazine, February 1961
1961	S. E. Cotts	Amazing Stories, November 1961
1966	P. Schuyler Miller	Analog Science Fiction/Science Fact, June 1966

Wikipedia

Title		Year	Publisher	Format	Type	Catalog ID	Cover Artist	Pages
Level 7		1960	McGraw-Hill / SFBC	Hardcover	Novel			183
Level 7		1961	Ace UK	Paperback	Novel	H497		143
Level 7		1961	Signet	Paperback	Novel	D1956		143
Level 7		1965	Signet / New American Library	Paperback	Novel	D2659		143
Level 7		1971	Signet / New American Library of Canada	Paperback	Novel	P3904		143
Level 7		1981	Allison & Busby	Trade Paperback	Novel		Mike Jarvis & Bob Marchant	139
Level 7		1989	Lawrence Hill Books	Trade Paperback	Novel			191
Level 7		2004	University of Wisconsin Press	Trade Paperback	Novel			xlix+210