Uncanny X-Men

(1963) #121

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• letterer

  Diana Albers

• letterer

  John Costanza

• letterer

  Dan Crespi

• inker

  Terry Austin

• writer

  John Byrne

• writer

  Chris Claremont

• penciller (cover)

  Dave Cockrum

• colorist

  Glynis Oliver

• editor

  Roger Stern

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All data from the awesome folks at Marvel.