Xing, YiwenDondi, CristinaBorgo, RitaAbdul-Rahman, AlfieAgus, MarcoAigner, WolfgangHoellt, Thomas2022-06-022022-06-022022978-3-03868-184-7https://doi.org/10.2312/evs.20221100https://diglib.eg.org:443/handle/10.2312/evs20221100Trading of 15th-century books is an area of great interest to historians. In this paper, we document the process behind an intensive design study and close collaboration with a domain expert on understanding crucial historical research questions, together with the result of the design study - BookTracker, a tool for mining and visualizing circulation and movement of the 15th-century book trade. The main contribution includes a summary of insights from the design study and BookTracker, a web application supporting historians in: (i) query-based search of user-defined path sequences, and (ii) analysis of the movement of the resulting user-defined path sequences through multiple visualization techniques. We discuss and summarize the value and logistics of conducting this design study, which could become generalizable lessons for the visualization design methodology.Attribution 4.0 International License10.2312/evs.2022110097-1015 pages