University of Santo Tomas

Signature taken from https://www.familysearch.org/ark:/61903/3:1:3Q9M-C9R3-P9SG-7

Signature taken from his marriage information: https://www.familysearch.org/ark:/61903/3:1:3Q9M-CSMJ-94CP Original file: https://ibb.co/ZS2swzY or https://imgbox.com/3V5G7bkg or https://pixhost.to/show/948/543906637_jose-juan-de-icaza-y-abraham-s-signature-1.jpg Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Jos%C3%A9_Juan_de_Icaza_y_Abraham%27s_signature.svg This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

Signature taken from his student file: https://www.familysearch.org/ark:/61903/3:1:3QHV-QQK9-B9Z8-B Original file: https://ibb.co/pyNdcZ0 or https://imgbox.com/eQU0Tk0N or https://pixhost.to/show/627/556393067_rafael-ampuero-y-diaz-s-signature.jpg Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Rafael_Ampuero_y_D%C3%ADaz%27s_signature.svg The author died in 1897, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1930.