The Monstrous Mystery of the Nega-Man - Jack Kirby art appears on page 1 (inset panel); pgs 2-6; pg 7 (panels 1-3 and 6); pg 8 (panels 2,3 and 6); pg 9 (panel 1); pg 10; pg 11 (panels 1-4); pg 12 (panel 2); pgs 13-14; pg 15(panels 1-5); pg 16 (panels 3-6); pg 17 (panels 1-6 and 8).
John Buscema art appears on pg 1 (splash); pg 7 (panels 4,5,7); pg 8 (panels 1,4,5); pg 9 (panels 2-5); pg 11 (panels 5-6); pg 12 (panel 1); pg 15 (panel 6); pg 16 (panels 1-2); pg 17 (panel 7); pgs 18-20.
John Romita redrew the figures of Ben Grimm on pg 11; panels 5-6 and pg 12; panel 1, along with possibly a few other minor alterations throughout. Info per Nick Caputo, March 2015.