1. A Different History Manifesto: Data Need Not Be “Big” or “Clean” • Clare H. Crowston, University of Illinois at Urbana-Champaign; Claire Lemercier, Centre National de la Recherche Scientifique (CNRS).

2. Measuring Skill: Gender, Race, and Occupations in the Early-20th Century U.S. Census • Cristina Groeger, Lake Forest College.

3. Occupational Data and Classification: An Old and Recurring Dilemma for Labor and Social Historians • Margo Anderson, University of Wisconsin-Milwaukee.

4. The Persistence and Change of Classification in Official Statistics: The Case of Forced Labour. • Theresa Wobbe, University of Potsdam.