What better way to celebrate National Doughnut Day than with a free treat? Shops across the country are marking the occasion with free pastries June 2.

Some, such as Dunkin' Donuts and Cumberland Farms, require purchase of a beverage to get the freebie.

National Doughnut Day was established in 1938 by the Chicago Salvation Army to honor women who served doughnuts to soldiers during World War I. The holiday is traditionally celebrated on the first Friday of June.

Here are the Houston-area deals:

Dunkin’ Donuts: At participating Dunkin' Donuts, get a free classic doughnut of your choice with the purchase of any beverage all day Friday while supplies last. Go here to find a Dunkin' Donuts near you.

Krispy Kreme: Get one free doughnut of your choice, no purchase necessary at participating locations. Go here to learn more and find participating shops.

Shipley's Do-Nuts: Stop by a participating location on Friday 6/2, from 5am-12pm to recieve one free glazed donut with your purchase!

A portion of Houston area sales will be donated to the Salvation Army- Houston Area Command.

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(Kelly Tyko, The Stuart, Fla. News contributed to this story)