Colour versions of the figures published in S. Graham 'On Connecting Stamps - Network Analysis and Epigraphy', Nouvelles de l'archeologie 135, March 2014
Node size is scaled to reflect PageRank scores, nodes and edges are coloured according to modularity.
Figures 1 and 2 are layed out in concentric circles, based on link distance from Domitia Lucilla (in the case of figure 1) and L Publilius Celsus (in the case of figure 2.
Figure 3 is layed out with the forced-atlas algorithm.