As part of developing digital teaching materials, we are delighted to present three units plus an introduction on the history of the International Labour Organization in the first half of the 20th century. Natali Stegmann and the team of students comprising Sven Ehlers, Christine Maschke, Felix Ostermaier, Yannis Rubi, Katharina Schmitt and Tim Treu approach this International Organization as a stage for international social policy making. We have chosen to organize the units according to policy-changing historical events that were important both internationally and for social policy making. The first unit deals with the establishment of the liberal Versailles order with the League of Nations and the ILO. The second unit focuses on the Great Depression since 1929, Keynesianism and the accession of the USA to the ILO. The third unit is dedicated to the realignment of the ILO during and after the Second World War. Thematically, these materials contribute directly to the ScienceCampus' focus on globality, transnational connections and international relations, and the role of international institutions.