This issue is a variant of Daredevil (Marvel, 1964 series) #124 [Regular Edition].
Last issue with Black Widow figure as part of the masthead.
The page numbers as listed in the credits refer to the total pages in the comic, which are numbered. Wein wrote the first nine pages of the story, Wolfman wrote the last nine pages. Black Widow's next appearance is in The Champions (Marvel, 1975 series) #1.
Letters from Michael Verderosa (Englewood, NJ), Dean Mullaney (Staten Island, NY), Ivar G. Anderson II (Farmington, MI), and Mike Coleman (Milton, MA).