Diego de Astor was a 17th-century Spanish engraver from Toledo.
He studied under Domenico Theotocopuli, and in 1606 engraved, under his superintendence, a 'St.
Of his plates we may notice the titlepage to Colmenares' Historia de Segovia (Madrid, 1640), and a series of plates of the first documented manual alphabet for the purpose of deaf education in Bonet's book Reducción de las letras y arte para enseñar a hablar a los mudos ("Summary of the letters and the art of teaching speech to the mute") .
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