The Mack Trucks Historical Museum is celebrating its 40th anniversary this year, marking decades of documenting and chronicling the manufacturer’s history.

To celebrate the anniversary, the Mack Museum will be commemorated during the biennial Trucktoberfest at the Mack Experience Center in October.

Located in Allentown, Pa., the non-profit museum is a 15,000 sq.-ft. Mack-themed exhibition housed at the Mack Experience Center. Thirty operational vehicles are on display for 10,000 annual visitors to see.

This includes a 1909 Mack tourist bus and the 2006 Mack Granite military truck from the 2011 film Transformers: Dark of the Moon.

The museum also has more than 40 million pages of records detailing Mack’s history and its role in the development of the modern American truck.

“Since its inception in 1900, Mack Trucks has been involved in everything from World War I to major infrastructure projects such as the construction of the Hoover Dam and the New York City subway system,” said David Galbraith, Mack Trucks vice-president of global brand and marketing. “We are proud to have the Mack Museum showcase all of these landmark construction projects, as well as Mack’s 124 years of achievements.”

“Not only do we preserve and catalog the Mack legacy, but we also share the importance of our vehicles to the function of the world,” added Doug Maney, Mack Museum curator and lead caretaker, in a release. “Each year, we answer more than 1,500 questions about Mack, from dealers seeking to service an older truck to hobbyists asking about vehicle parts.”