This month we are marking our 100th feature by highlighting descriptions for the records of pressure groups held by Hull University Archives at Hull History Centre.

The records of pressure groups and campaigns represent some of the most significant and substantial archives held by Hull University Archives, They number around 40 collections from small, short-lived, groups to major continuing organisations. The most significant and substantial archive is that of Liberty, which recording the continuing development of civil rights in Britain over the past 75 years.

photo: British Union for the Abolition of Vivisection marchers, copyright © Hull History Centre.