Kirby co-plot credit was widely acknowledged by Lee and Kirby in numerous interviews. The credit here reads "One of the greatest action thrillers ever produced by Stan (The Man) Lee and Jack (King) Kirby."
Letters from: John Arvites, Wayne Cobb, Jerome Colwell, Esau Simmons, Charles Smith, Corbett Besco, L/Cpl. Alan K. Gray USMC, Richard Adams, and Terrence Mule.