PETERSON TRACTOR is part of Caterpillar's worldwide dealer network serving 30,000 square miles of Northern California... from Santa Clara county in the south to Humboldt county in the north. Ten stores positioned throughout our territory provide convenient access. If you're looking for Caterpillar parts, equipment, service, rentals or just for answers to your questions, then you've come to the right place. Call us today 1-888-Peterson.