An agent has authority to do everything necessary, or proper and usual in the ordinary course of business, for effecting the purpose of his agency.
S.D. Codified Laws § 59-3-5
Agent's necessary authority--Ordinary course of business
Source: CivC 1877, § 1358, subdiv 1; CL 1887, § 3981, subdiv 1; RCivC 1903, § 1677, subdiv 1; RC 1919, § 1259 (1); SDC 1939, § 3.0206 (1)
Official source: South Dakota Legislature. Reproduced from public-domain South Dakota statutes; confirm against the official source for the current text. Not legal advice.