About The Ag Bureau "113 Years of Promoting Agriculture in the Inland Northwest" The Ag Bureau is the largest of the Spokane Regional Chamber of Commerce that has been promoting agriculture in the region for 113 years. We are a non-profit organization that is dedicated to the support and promotion of a strong and viable agricultural industry in the Inland Northwest. Our membership concists of a wide range of people- farmers, bankers, extention serivce, equipment dealers, and realtors, people who grew up on the farm, and individuals that realize ow important agriculture is to Spokane and the Inland Northwest.