Marvel Team-Up #21 (May 1974). Cover pencils by Gil Kane and inks by Frank Giacoia (and perhaps Mike Esposito - they often worked together). The cover shows Spider-Man and Doctor Strange fighting each other because they have strings tied to them and they are being controlled like puppets by the villain, Xandu the Unspeakable.

Marvel Team-Up #21 (May 1974). Cover pencils by Gil Kane and inks by Frank Giacoia (and perhaps Mike Esposito - they often worked together).
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