The Thomas Aquinas is particularly interesting as the oldest printed book in the Collection. It was produced in 1490, which puts it within 40 years of the invention of moveable type by Gutenberg. It shows all the earmarks of early printing, being without a title page, but having printing information in a colophon at the back. It also in traditional style leaves space for an illuminator to decorate capital letters a the beginning of paragraphs.
Menno Simons was the founder of the Mennonite sect. Heinrich Suso, also known as Vater Amandus, was a German mystic of the 14th century.
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Opuscula, 1490 #81