Per our awesome intern Matthew Bathan (and Wikipedia), National Doughnut Day:
• Is celebrated on the first Friday in June of every year.
• Began as a fundraiser in 1938 by the Chicago Salvation Army to benefit the needy and the women who served doughnuts, pies, and coffee in huts "that could serve baked goods, provide writing supplies and stamps, and provide a clothes-mending service" during WWI. These huts were located throughout France and were staffed by about 250 Salvation Army volunteers. Donuts were the treat of choice because of their popularity and the ease with which they were made (as opposed to baking cookies on-site). (Fun fact: Making doughnuts was the idea of two Salvation Army volunteers, Margaret Sheldon and Helen Purviance.)
• Merriam-Webster deems "donut" simply a variant of the more appropriately spelled "doughnut."
Would you like to celebrate with a free (mini-) doughnut? Sure you would.