Similar to the visualization 'people mentioned (filter with 11 degree)', this network, which shows the people mentioned in the correspondence, is also filtered, leaving the people with at least eleven connections to unique authors and recipients, as described above. Again it turned out that setting the filter at 11 revealed a reasonable number of nodes, but without ending up with a tangled web of connections. The thickness of the edges denote frequency of correspondence. For example, the thick lines between linking the red author/recipient nodes of Bodley and Burghley indicate that they made reference to Holland, Zeeland, France and Groningen very frequently.