A digitized picture from the Ezra Jack Keats Collection at the University of Southern Mississippi shows Keats working in a studio with Mark Swayze, C.C. Beck, and Dave Berg working on Captain Marvel stories. The splash page of this story seen being held up by Berg while talking to Beck. This picture confirms he worked on it and almost certainly worked on by Keats as well (see: https://usm.access.preservica.com/uncategorized/IO_c862af24-fad0-4f42-afac…, retrieved 19 March 2021).
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