At the library of the Ruusbroec Society, efforts are underway to digitise the extensive collection of prints. Many of our glass plates appear to have served the same purpose: to reproduce and make this collection of prints more accessible. Here is an example of such a print: Ignatius of Loyola, the founder of the Jesuit Order.
Source: L.J.M. Philippen, 1872-1946, Print Ignatius of Loyola, Universiteitsbibliotheek Antwerpen, Public domain