Every agent has actually such authority as prescribed by this title on "agency" unless specially deprived thereof by the principal, and even then has such authority ostensibly except as to persons who have actual or constructive notice of the restriction upon his authority.
S.D. Codified Laws § 59-3-4
Agent's general authority
Source: CivC 1877, § 1357; CL 1887, § 3980; RCivC 1903, § 1676; RC 1919, § 1258; SDC 1939, § 3.0201.
Official source: South Dakota Legislature. Reproduced from public-domain South Dakota statutes; confirm against the official source for the current text. Not legal advice.