GRAPHIC DESIGN. ILLUSTRATION. What started as two families gathering in the California town of Mammoth Lakes to celebrate the 4th of July has grown into an annual two-week event with over a dozen families participating in outdoor activities, summer-time games, food and more food. The Mammoth Mountain Crew was born and with that a new logo design each year for t-shirts, hats and other gear. The items have become so popular that visitors to Mammoth Lakes are asking the town shops where they can get their hands on them. Sorry. Exclusive to the MMC only.