South Dakota Codified Laws
Chapter 25 - Livestock Registry Associations
Section 40-25-1 - Number of organizers required to form association.

40-25-1. Number of organizers required to form association.
Any number of persons not less than six, may associate themselves together as a cooperative association, society, or company for the purpose of conducting a purebred livestock registry association.

Source: SDC 1939, ยง40.1601.