Andrew D. Cliff is Emeritus Professor of Theoretical Geography at the University of Cambridge. They have collaborated for some 30 years on the application of geographical methods and techniques to an understanding of the historical geography and demographic impact of infectious diseases. They have jointly authored a number of books, monographs, and atlases. Their recent Atlas of Refugees, Displaced Populations, and Epidemic Diseases was published by Oxford University Press in 2018.

Vincent Geloso is assistant professor of economics at King's University College and holds a PhD from the London School of Economics.

Carl Gershenson is a postdoctoral fellow at Washington University in St. Louis. He received his PhD in sociology from Harvard University in 2018. He studies the relationship between market, state, and society using quantitative and historical methods. His dissertation shows how populism and party politics transformed the business corporation from a quasipublic instrument of governance into a private market actor in the century after American independence. Carl has also published on other topics, including corporate democracy and the eviction crisis.

Elizabeth M. Greenhalgh is Research and Policy Manager at Cancer Council Victoria, Australia, where she specializes in the area of tobacco control. She is currently editor and manager of the comprehensive online publication Tobacco in Australia: Facts & Issues, and has written on topics such as smoking and social disadvantage, and the potential for harm reduction in tobacco control.

Molly S. Jacobs is an NTT assistant professor of sociology at Occidental College. Her work focuses on how conflict in nonprofit and activist organizations impacts organizational forms and goals.

Matthew Jaremski is an associate professor of economics and finance at Utah State University and a research associate at the National Bureau of Economic Research. His research involves the collection and analysis of historical bank data to study the causes and consequences of financial instability. His work has been published in a wide range of journals including Journal of Economic History, Journal of Finance, and Journal of Money, Credit, and Banking.

Thomas J. Kehoe is the in-house historian at the internationally renowned not-for-profit Cancer Council Victoria, Australia, where he leads the organization's heritage project. He is also Honorary Research Fellow in history at the University of Melbourne, to which the Council has long been affiliated. He has a background in German and US history, having completed his postgraduate degrees (MA, PhD) at the Universities of Sydney and Melbourne. His first book, The Art of Occupation, released in 2019 examined US military government in occupied Germany after World War II. A book he co-edited on fear in the German-speaking world was released in February 2020. He has published in many leading journals, including Business History, Holocaust & Genocide Studies, the Journal of Interdisciplinary History, and the Journal of the History of Sexuality. His current research examines the US occupation of Germany after World War I and the connections between imperialism, tobacco, and cancer in the twentieth century.

Elisabeth Ruth Perlman is an economist at the US Census Bureau, studying innovation and patenting in both the nineteenth and twenty-first centuries. They focus on the importance of urban areas, information and transportation networks and are more broadly interested in factors that influence the direction of science and innovation.

Steven Sprick Schuster is an assistant professor of economics at Middle Tennessee State University, where he is also a member of the Political Science Research Institute. His historical research looks at the role of US government institutions (especially the Post Office) in the late nineteenth and early twentieth century, while his political economy research focuses on how voters respond to campaign messaging, information networks, and election structures

Hana Shepherd is an assistant professor of sociology at Rutgers University. She specializes in culture and cognition, social networks, and organizations to study how various social processes contribute to cultural change. She uses network analysis, lab and field-based experiments, interviews, and archival research. Her current projects examine how local governments enforce labor protections, and networks and low-wage work. Her recent work appears in Journal of Marriage and the Family, Poetics, Proceedings of the National Academy of Sciences, and Social Psychology Quarterly.

Matthew R. Smallman-Raynor is professor of analytical geography at the University of Nottingham.

Xuesheng You is a research associate at the Cambridge Group for the History of Population and Social Structure, University of Cambridge. His main research interests lie in the areas of gender history in the eighteenth- and nineteenth-century England and Wales, transport history in the nineteenth-century Britain, and computational methods in history and digital humanities.