The Industrial Workers of the World (IWW), sometimes known as the Wobblies, is a radical labor organization that was most active from 1900 to the 1930's. This collection of pamphlets, leaflets and letters, originally held by the now defunct I.W.W. Seattle Office, focuses on the Centralia Massacre of 1919 in Centralia, Washington. The material for this database was drawn from a collection in the UW Libraries Manuscripts, Special Collections and University Archives Division entitled, Industrial Workers of the World. Seattle Office, Accession No. 544. Not all the material from this collection was included in this database. [self-description]