- These are the most popular burger condiments used by Americans, according to DoorDash grocery dataFox Business
- Burger time: National Hamburger Day is Sunday. Here are some deals for free, discounted food.USA TODAY
- Celebrating National Burger Day with STK SteakhouseWGN News
- Celebrate National Hamburger Day with the best burgers in AustinAustin American-Statesman
- Best burgers in Wilmington at these restaurantsStarNewsOnline.com