[S] Brooks, Oregon

The Founders Chapter in Oregon is a group of Caterpillar collectors and enthusiasts who share information, swap stories, and preserve the history of Caterpillar.

[C] Kansas/Missouri

We come together as ACMOC members to encourage each other on their projects and to form closer friendships for people that enjoy the ownership of antique Cats. But most of all, to have FUN together!

[C] United Kingdom (England, Scotland, Wales and Northern Ireland)

Chapter 2 was the first ACMOC Chapter established outside of the USA.

[S] North Star Crawlers Minnesota

We are Caterpillar enthusiasts who love to talk about and work on old equipment. Many new friendships have been developed through our Chapter.

[S] Midwest Smaller Crawlers, Northern Illinois

Chapter 4 is a very enthusiastic group who are active in the Rock and Dirt Show at the Rock River Thresheree along with their own projects at home.

[S] North California Coast

We are a group of enthusiasts from North California Coast who have a passion for antique Cat equipment and sharing our knowledge with others.

[S] Black Land Dirtmovers Iowa

Located in Iowa, our chapter is dedicated to the protecting and celebrating the legacy of Cat equipment.

[C] Collectors of Antique Tractors Pennsylvania

We provide a more regional connection for the membership that share an interest in the collection, history, and restoration of Caterpillar, Best and Holt machines.

[S] Rocky Mountain SouthEastern Wyoming, Northern Colorado, Western Nebraska

We share our years of experience with Cat equipment and enjoy operating equipment that many don’t get to be around.

[C] New Zealand

The chapter fulfills a common goal of uniting collectors’ interest on a country wide basis. We have the camaraderie of being in a “loose fitting” group of collectors and enthusiasts.

[S] Classic Crawlers in Paradise, Hawaii

We enjoy working on projects together and going to events like the Upcountry Farm Fair because we always have a lot of tractors on display.

[S] Virginia, North and South Carolina and Eastern Tennessee

Our chapter gives members the opportunity to meet other Caterpillar collectors face-to-face and share in the bond that brings us all together, in creating relationships that last for years.

[S] Inland Northwest Crawlers North West Idaho

We are a group of enthusiasts from Northwest USA who have a passion for antique Cat equipment and sharing our knowledge with others.

[S] Cal-Sierra Tracklayers Northern California

You’ll see rare and unique Caterpillar collections when you attend one of our hometown events. Audiences of all ages are welcome to join.

[S] So. Cal. Vintage Crawlers, Southern California

We are known as Southern California Vintage Crawlers. Our chapter activities and meetings are held at The Antique Gas and Steam Engine Museum in Vista California.

[S] San Jose - Silicon Valley, California

We're diversified from Ag and Construction to CAT related enthusiast. Meetings bring personal contact, knowledge sharing, and getting to visit other members collections.

[C] Queensland Vintage Crawlers and Machinery

We are a group of enthusiasts from Queensland who have a passion for antique Cat equipment and sharing our knowledge with others.

[C] Southeast Australia (Victoria and Tasmania)

Located in Southeast Australia, our chapter is dedicated to the protecting and celebrating the legacy of Cat equipment. We represent Victoria & Tasmania with regular meetings at William Adams headquarters and have a dedicated site at Lake Goldsmith where we hold twice annual events.

[S] Heartland Earthmovers Central Illinois

The Heartland Earthmovers is dedicated to supporting enthusiasts of Cat antique machinery and Caterpillar history in Central Illinois

[S] Old Iron Collectors Ohio

We are a group of enthusiasts from Ohio, Pennsylvania, and West Virginia who have a passion for antique Cat equipment and sharing our knowledge with others.

[S] High Desert Crawlers Utah

Located in Southwest USA, our chapter is dedicated to the protecting and celebrating the legacy of Cat equipment.

[S] Holt Collectors Club, Texas

We are a group of enthusiasts from Texas and Oklahoma who have a passion for antique Cat equipment and sharing our knowledge with others.

[S] Great Lakes Crawlers Michigan

Chapter 25 members enjoy working on their project machines and attending shows. Chapter members enjoy sharing their knowledge with other regional collectors to keep help their machines running.

[S] Eastern Montana Clatter Tracks

We are a group of enthusiasts from Eastern Montana who have a passion for antique Cat equipment and sharing our knowledge with others.

[C] Canadian Classic Prairie Crawlers (Saskatchewan and Western Manitoba).

We are the first Canadian ACMOC Chapter, come up to the great white North for a visit!!

[C] Mid North Coast Vintage Crawlers (Australia, Northern NSW).

Located in Southeast New South Wales, Australia, our chapter is dedicated to the protecting and celebrating the legacy of Cat equipment.

[C] Surf to Summit Tractors (Australia, Southern NSW).

We come together with families and friends at events, socialize, share our caterpillar tractors and stories, and have our meetings over a meal.

[C] Milang Classic Crawler Club (South Australia).

We are a group of enthusiasts from Australia who have a passion for antique Cat equipment and sharing our knowledge with others.