Leiber/Romita/Milgrom credits per Nick Caputo, August 2012. Original indexer credited Romita with pencils and inks.
reprint mistakenly identified as from Astonishing Tales #36
The Human Robot next appears in What If? (Marvel, 1977 series) #9, in the superhero team eventually known as the Agents of Atlas.
house ad for Giant-Size Spider-Man (Marvel, 1974 series) #1