The journals included are College English, College Composition and Communication, Rhetoric Society Quarterly, and Rhetoric Review. The dates are roughly between 1973-2011, but the coverage varies per journal. Please see my explanatory post and Clancy Ratliff's post for more detail. The slider controls the number of total citations; the lower the number, the more nodes will appear on the graph. Mouse over the nodes to see only those nodes that are connected.