Ad in 1939 Liberty magazine via
Intended to promote advertising, this also advocates the transition from buying a limited variety of food in bulk to buying a wider variety of food in packages. Of course, the packaged food manufacturers are much more likely to purchase magazine advertising than bulk food providers. This ad mentions bacon — today, December 30, is National Bacon Day.
Liberty is a magazine of religious freedom that was founded in 1906 and is still publishing.