Fantastic Four (1961 1st Series) #183...Published Jun 1977 by Marvel

"Battleground: The Baxter Building!" Written by Bill Mantlo. Pencils by Sal Buscema. Inks by Joe Sinnott. Cover by George Perez and Joe Sinnott. Guest-starring Tigra and Thundra. It's the cataclysmic conclusion to the Brute (aka Reed Richards of Counter-Earth) storyline! After rescuing the free-falling Invisible Girl; the Impossible Man, Tigra, and Thundra (along with a revived Sue) charge into the Baxter Building to stop the Brute! While at the same time; Reed, Ben, Johnny, and Annihilus fly towards the Negative Zone portal to catch the Mad Thinker's monster android! No less than four villains and seven heroes will fight to the finish inside the Baxter Building! Who will win, and perhaps more importantly, who will lose? Notes: Annihilus appears next in Marvel Two-in-One 75. The letters page contains a short essay describing the development of this six-issue storyline. Note: A 35-cent cover price variant exists for this issue