White Castle customers can get one free Original Slider in honor of National Slider Day. Hand-out Photo by White Castle White Castle is celebrating its Original Slider with a one-day giveaway.

White Castle is celebrating its Original Slider with a one-day giveaway. On Thursday, May 15, anyone can get a free Original Slider when they order online or in the White Castle app on National ...

White Castle introduced National Slider Day in May 2015 to honor the slider. “The introduction of the Slider in 1921 helped turn White Castle into a household name and launched the fast-food ...

This is a photo collection curated by AP photo editors.

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