Joseph P. Bradley, Williams v. Conger (125 U.S. 397…
“ The appellant relies upon a passage in Escriche (verbo 'Poder') where he says that a power of attorney is to be made before a notary public, and to have certain formalities described. But he there refers to the technical power called, in the Spanish law, poder, or procuracion, having much the same meaning as our term 'power of attorney,' which indicates a power or authority under seal. But the technical poder is not the only form by which authority may be given to act for another. A technical power, executed with all the solemnities, is but one form of a mandate, (mandato, mandamiento.) ”
