and certification... (1958)

insured the milk supply remained healthy. (1958)

Cleanliness played a vital role. (1951)

New technologies Like refrigeration... (undated)

hot water heaters and... (1951)

microbiology also aided milk quality. (1958)

Outdoor plumbing like this motorized well pump... (undated)

was replaced with presurized indoor fixtures... (undated)

for washing hands both in the milk barn... (1954)