 After Penny Singleton was cast in the title role of the feature film "Blondie" (1938), co-starring with Arthur Lake as Dagwood (the first in a series of 28 produced by Columbia Pictures); she and Lake repeated their roles December 20, 1938, on "The Pepsodent Show starring Bob Hope".The appearance with Hope led to their own show, beginning July 3, 1939, on CBS as a summer replacement for "The Eddie Cantor Show".However, Cantor did not return in the fall, so the sponsor, R.J. Reynolds' Camel Cigarettes chose to keep "Blondie" on the air Mondays at 7