Figure under Goliath's arm likely added/altered by John Romita.
Letters from: John F. Lebar, Bill Hickey, Marvin Chase, Bruce Lowry, Rich Cornish, Dennis Collier, Alan Dean, Nick Olivas, and Stuart Herskovitz. The first page also includes a membership form for the Merry Marvel Marching Society, and illustrations from The Avengers (Marvel, 1963 series) #26, page 3, 5th panel, and #27 page 2, 5th panel.