Sealtest

Sealtest Dairy was a division of National Dairy Products Corporation (predecessor to Kraft Foods, Inc.) of Delaware. It produced milk, cream, ice cream, and lemonade. The Sealtest brand was also later used by various companies in Canada under licence (now held by Agropur).

Sealtest also sponsored an ice cream store at the Magic Kingdom at Walt Disney World in Florida named Sealtest Ice Cream Parlor and Sealtest Ice Cream Wagon. At one time, the advertising agency on record, Young & Rubicam, wanted to reintroduce the brand as "Now with Natural Vanilla." Consumers responded that they believed the brand to be "all natural" already and the effort to increase brand spending was ended before it went to market.

Sealtest had milk and ice cream plants across the midwestern and northeastern part of the United States, with large operations in Chicago, Milwaukee, Cleveland, LaCrosse, Wisconsin, Huntington, Indiana, Rockford, Illinois, and Philadelphia, as well as New York City. Its Mid-South operations were based in Nashville.

The Milwaukee operation was purchased from a family-owned dairy operation, Luick Dairy, in the late 1940s or after. The Sealtest brand was originally a franchise, much like the 'Quality Chekd' dairy brand - local milk bottlers bought the rights to the Sealtest name in their market areas. Luick and presumably all the other franchisees were bought up by National Dairy Co.

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Wikipedia