| (4949) Ethnic Groups, IWW Members, Italians, Undated | Image |
| (4951) Strikes, Violence, Maritime Workers, John Kane, Houston, 1936 | Image |
| (4952) Strikes, Violence, Maritime Workers, John Kane, Houston, 1936 | Image |
| (4954) Strikes, Violence, Maritime Workers, John Kane, Houston, 1936 | Image |
| (4955) Studio Portrait, Byron Kitto, Vallejo, California, 1900s | Image |
| (4960) Outdoor Meetings, Byron Kitto, 1920s | Image |
| (4961) Byron Kitto, Sanitarium, California, 1920s-1930s | Image |
| (4964) Byron Kitto, Sanitarium, California, 1920s-1930s | Image |
| (4966) IWW, Lawrence Strike, Ettor, 1912 | Image |
| (4968) Lawrence Strike, Strikers, 1912 | Image |
| (4969) Lawrence Strike, Organizers, 1912 | Image |
| (4978) IWW, Lawrence Strike, Ettor & Giovannitti, 1912 | Image |
| (4973) IWW, Lawrence Strike, Ettor, Giovannitti, 1912 | Image |
| (4974) IWW, Lawrence Strike, Illustrations, Child Labor, 1912 | Image |
| (4976) IWW, Lawrence Strike, Illustrations, Violence, 1912 | Image |
| (4978) IWW, Lawrence Strike, Illustrations, Ettor & Giovannittii, 1912 | Image |
| (4978) IWW, Lawrence Strike, Illustrations, Wool Trust, 1912 | Image |
| (4979) Lawrence Strike, National Guard, 1912 | Image |
| (4986) Mug Shot, Charles Lambert, Mass Trial, 1918 | Image |
| (4987) Jim Larkin, Irish Transport and General Workers Union (ITGWU), Portrait | Image |
| (4988) Portrait, Cecil Lipshutz, 1910s | Image |
| (4989) Portrait, Frank Little, 1910s | Image |
| (4996) Little Falls Textile Strike, Slovak Hall, New York, 1912 | Image |
| (4997) Textile Workers, Strikes, Little Falls, New York, 1912 | Image |
| (4998) Textile Strike, Little Falls, New York, 1912 | Image |
| (4999) Textile Workers, Strikes, Little Falls, New York, 1913 | Image |
| (5001) Housing, Poverty, Undated | Image |
| (5002) Housing, Works Projects Administration, 1930s | Image |
| (5006) Lumber Industry, Arlington, Washington, 1917 | Image |
| (5007) Lumber Industry, Louisiana, 1910s | Image |
| (5008) Lumber Industry, Arrests, Yakima, Washington | Image |
| (5009) Lumber Industry, Arrests, Strikes, Washington, 1917 | Image |
| (5010) Lumber Industry, Centralia, Washington, 1910s | Image |
| (5012) Lumber Industry, Red Deer, Alberta Canada, 1910s | Image |
| (5013) Lumber Industry, Machinery, 1910s | Image |
| (5015) Lumber Industry, Workers, 1910s | Image |
| (5017) Lumber Industry, Workers, Califrnia, 1910s | Image |
| (5018) Lumber Industry, Methods, 1900s | Image |
| (5019) Lumber Industry, Workers, LWIU #120, Bangor, ME, 1910s-1920s | Image |
| (5020) Lumber Industry, Machinery, New York, 1910s | Image |
| (5021) Lumber Industry, Workers, California, 1910s | Image |
| (5023) Lumber Industry, Bellingham, Washington, 1910s | Image |
| (5024) Lumber Industry, Arlington, Washington, 1910s | Image |
| (5025) Lumber Industry, Redwoods, 1910s | Image |
| (5026) Lumber Industry, Working Conditions, Maine, 1910s | Image |
| (5032) Lumber Industry, Machinery, 1910s | Image |
| (5033) Lumber Industry, Lumber Mills, Hoquiam, Washington, 1910s | Image |
| (5034) Lumber Industry, Pacific Northwest, 1910s | Image |
| (5035) Lumber Industry, Everett Massacre, Elizabeth Gurley Flynn, Seattle, 1917 | Image |
| (5038) Lumber Industry, I.W.W. Halls, Arlington, Washington, 1917 | Image |