[1] The chain began as Tri Dairy Store in 1948 in Middleton, Wisconsin, opened by Sam Jacobsen.
The second store didn't come along until 1962; the name PDQ, an acronym for "pretty darn quick" or "pretty damn quick", was a popular catch phrase in the post-World War II era, and the name was suggested by Jacobsen's wife Mary.
Most sold gasoline, as is common with modern convenience stores.
The acquisition was completed on October 9, 2017, and Kwik Trip remodeled and re-imaged the existing PDQ locations over the following weeks.
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