Captain America

(1968) #421

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• inker

  Danny Bulanadi

• inker

  Dan Day

• inker

  Jim Garvey

• writer

  Mark Gruenwald

• penciller (cover)

  Rik Levins

• editor

  Mike Rockwitz

• letterer

  Joe Rosen

• colorist

  George Roussos

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All data from the awesome folks at Marvel.