Dr. Butler has published his research on data visualization in digital humanities in several peer-reviewed journals, including:
Butler, S. (2011). Teaching Rhetoric through Data Visualization. Communication Teacher, 25(3), 131-135.
Weisgerber, C. & Butler, S. (2009). Visualizing the Future of Interaction Studies: Data Visualization Applications as a Research, Pedagogical, and Presentational Tool for Interaction Scholars. Electronic Journal of Communication, 19(1-2).