Krispy Kreme, Tim Hortons and Dunkin' Donuts are among those giving away sweet treats on Friday, June 7. By Cameron Huddleston, Former Online Editor June 3, 2013 There's a holiday for practically everything: National Flashlight Day, Dress Up Your Pet Day, Toasted Marshmallow Day and even National Kazoo Day. I don't suspect you'll be celebrating all the wacky holidays that there are throughout the year, but there is one on June 7 that you might want to mark on your calendar. It's National Donut Day, held the first Friday of June, and several doughnut shops will be offering these delicious little goodies for free.SEE ALSO: Fabulous Freebies National Donut Day began in 1938 when The Salvation Army in Chicago held a fundraiser to help those in need during the Great Depression and to commemorate the work of its female volunteers who served doughnuts to soldiers during World War I. Through June 15, Entenmann's will donate $1 to The Salvation Army for every person who "likes" the Entenmann's Facebook page. The baked-goods company also is running a National Donut Day sweepstakes. You can enter through June 30 for a chance to win Entenmann's doughnuts for a year or other prizes. If you want to celebrate National Donut Day and indulge in a free doughnut, stop by one of these places on June 7 or check with your favorite local doughnut shop to see if it's offering a freebie. Dunkin' Donuts is offering a free doughnut with a beverage purchase on June 7. Find a location near you. Advertisement Krispy Kreme is offering a free doughnut of any kind on June 7 -- no purchase necessary -- at participating locations. LaMar's, which has 27 stores in six states, is partnering with The Salvation Army to offer a free doughnut to each guest on June 7, with no purchase necessary. Salvation Army donation kettles are being placed in front of participating LaMar's locations, and LaMar's stores are donating a portion of proceeds from the week's sales to The Salvation Army's relief efforts for tornado victims in Oklahoma. Tim Hortons Cafe and Bake Shop has a coupon for a free doughnut with any purchase on June 7 at its 714 locations across the U.S.