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This library is built in the open.
If you spot an error, have a suggestion, or just want to say hello — we’d love to hear from you.

At the top right, a circular ink stamp with a crown and text, likely reading "FERNANDO DE MADRID COLLEG. ... DE FARNESIO" representing the Colegio Imperial of the Jesuits in Madrid.
A second circular library stamp of the Colegio Imperial de Madrid, centered at the bottom of the page.