Each turquoise node on the map represents a poem; each black node represents a source or print source in which that poem can be found. Higher color saturation indicates a larger number of sources or poems connected to a given node. Poems are labeled according to their first lines as they appear most commonly in early modern sources (with Rainolds’s poem appearing as “Why lovely boy why fliest thou me”); sources are labeled according to their library shelf-mark, which can be keyed to the full bibliographic information listed below, which includes links to selected images of these sources. Clicking on a poem-node recenters the visualization on that poem, showing other sources in which that poem can be found. Conversely, clicking on a source-node recenters the visualization on that source, showing other poems relating to race that can be found in that source.