Analysis of information sources in references of the Wikipedia article "Proclamação de Emancipação" in Portuguese language version.
The Emancipation Proclamation was an executive order, itself a rather unusual thing in those days. Executive orders are simply presidential directives issued to agents of the executive department by its boss.
That on the first day of January in the year of our Lord, one thousand eight hundred and sixty-three, all persons held as slaves within any State, or designated part of a State, the people whereof shall then be in rebellion against the United States shall be then, thenceforward, and forever free
