This collection was generated by the Labor Herald, the official newspaper of the California CIO Industrial Union Council. The collection consists of 280 photographs covering 1930s-1960s; the bulk is from the 1940s. It represents a visual record of the leaders, meetings, demonstrations, strikes, World War II activities, Labor Day parades, and anti-Taft-Hartley demonstrations of major CIO unions in California. There are 144 photographs of CIO leaders and a few legislators supported by these unions such as Culbert Olson and Helen Gahagan Douglas. Among the 136 photographs arranged by subject, two events are well documented: the UE strike at US Motors, Los Angeles, 1946, with nine photos by Otto Rothschild; 24 photographs of the Labor Day Parade, San Francisco Civic Center Plaza, 1947, with floats and banners stating an anti-Taft Hartley Bill theme.