• The Arsenal of Miracles is 156 pages; ©1964
• "First Book Publication" on the cover
• The artist is not credited, no visible signature
• Interior art piece is not credited, has Gaughan's "JG" on it
•
Endless Shadow is 97 pages, ©1964
• "Complete Novel" on the cover
• The artist is not credited, no visible signature. ACE Image Library credits Valigursky
• Interior art piece is not credited, has Gaughan's "JG" on it
• Month of publication from Jad Smith's
John Brunner biography
• For individual, clear images, see
here for
The Arsenal of Miracles and
here for
Endless Shadow.