Mass Observation Online makes available original manuscript and typescript papers created and collected by the Mass Observation organisation, as well as printed publications, photographs and interactive features. It offers access to one of the most important archives for the study of social history in the modern era. The material covers the end of the ‘Hungry Thirties’ when the impact of the Depression was still being felt, the onset of war, the Blitz and war on the home front and the post-war world, with the rise of consumerism and television.