One hundred years ago, Navy buddies with a passion for cars set out to make a living. In the process, they helped invent the automotive aftermarket—driven by the belief that the key to business is always doing right by your customer.

Manny, Moe, and Jack are a big part of the story, but there are thousands of others, who also went further for their customers and communities, to thank for Pep Boys’ success. Let’s take a road trip through the decades and check out the people and cultural changes that forged a brand lasting a century and counting. The year is 1921. The place: Philadelphia.