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Gaylord Du Bois script credit as per page 39, Gaylord Du Bois's Account Books, Sorted by Title, compiled from the original account books by Randall W. Scott. Script identification by David Porta (September 2013). Account Books entry states: "Lassie and the Cougar Call. 14 half pages. For March of Comics, 1960. Sent June 5, 1960."