Concordance of engraved portraits from "Alma Academia Leidensis" compiled from 6 versions published between 1609-1716, taken from 
<p><i>Beschrijvende catalogus van gegraveerde portretten van Nederlanders</i> 
</p>
edited by J. F. van Someren, as a sequel to Frederik Muller's <i>Catalogus van 7000 portretten van Nederlanders</i>. published by the Frederik Muller Foundation, 1888 in Amsterdam
Frederik Muller, J.F. van Someren
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