Membership Directory. Our membership directory is printed in the fall of every other year. The directory contains all of the elevator members of the association listed by city and by company, and the associate members listed by company. It also contains information such as: state elected officials, selected state agency contacts, congressional delegation, other state associations, USDA Farm Service Agency contacts as well as a listing of farm service agencies in each SD county, grain inspection services, a map of the SD railroad system, and a section on the SD Public Utilities Commission that includes contacts and excerpts of grain warehouse and grain buyer laws. There is also a buyers guide showing advertiser products by category.