| (30822) SWE Polytechnic Institute of Brooklyn Student Section, 1968 |
| (30821) SWE Polytechnic Institute of Brooklyn Student Section, 1968 |
| (31816) IWW Hall, Houston, Texas, 1930s-1940s |
| (31817) IWW Halls, Everett, Washington, 1910s-1920s |
| (31284) SEIU Local 106 Cemetery Workers Union, Shalom Memorial Park Strike, 1973 |
| (31283) SEIU Local 106 Dental Technicians and Specialists Union Members at Work, 1970s |
| (31264) William McFetridge, George Fairchild, Clean Up Parade, Chicago, Illinois, 1950s |
| (4783) IWW Halls, M.T.W.I.U. Local 510, Lithuanian National Hall, Philadelphia, 1920s |
| (4768) Agricultural workers, Fruit packers, 1910s |
| (4769) Agricultural workers, Fruit packers, 1910s |
| (4788) Colorado Coal Strike, IWW Hall, Raids, Trinidad, 1927 |
| (4795) Harlan County Coal War, W.B. Jones, Kentucky, 1930s |
| (4782) IWW Halls, Interior view, 1919 |
| (4793) Harlan County Coal War, Miners, Kentucky, 1930s |
| (4779) IWW Halls, Interior, Oakland, California, 1949 |
| (4775) Portrait, Arthuro Giovannitti, 1910s |
| (4773) May Day, General Strike, Chicago, Undated |
| (4791) Harlan County Coal War, Miners, Kentucky, 1930s |
| (4776) Grand Coulee Dam, Construction, Columbia River, Washington, 1930s |
| (4777) Buildings, Exterior, IWW Bakery, 1910s |
| (4771) Agricultural workers, Fruit picker, 1910s |
| (4789) Harlan County Coal War, Miners, Kentucky, 1930s |
| (4813) Harlan County Coal War, Children, Kentucky, 1930s |
| (4787) IWW Hall, New York City, Raids, 1919 |
| (4794) Harlan County Coal War, F.M. Bratcher, Kentucky 1930s |
| (4784) IWW Halls, Everett, Washington 1910s |
| (4781) Organizers, Obarman, Erwin, Oakland, California, 1950s |
| (4774) Portrait of Arthuro Giovannitti, 1910s |
| (4792) Harlan County Coal War, Al Benson, Floyd Murphy, Kentucky, 1930s |
| (4778) IWW Halls, Interior, Oakland, California, 1949 |
