This work is in the public domain in the United States because it meets three requirements:
it was first published outside the United States (and not published in the U.S. within 30 days),
it was first published before 1 March 1989 without copyright notice or before 1964 without copyright renewal or before the source country established copyright relations with the United States,
it was in the public domain in its home country on the URAA date (January 1, 1996 for most countries).
{{Information |Description={{en|1=Juan Jose Castelli demands the viceroy Cisneros to allow the call for a Cabildo Abierto}} {{es|1=Juan José Castelli demanda al virrey Cisneros permitir la realización de un Cabildo Abierto}} |Source=Enciclopedia "Histor