American Jewish Committee, Advertisement Proof, "Labor Day, 1882 or 1949...The Picnic is the Same!", 1949 July 21, id121438, Box: 118, Folder: 5, Item: 5. Jewish Federation Council of Greater Los Angeles, Community Relations Committee Collection, Part 3, URB-CRC3. Special Collections & Archives. https://findingaids.csun.edu/repositories/2/archival_objects/96082 Accessed June 19, 2026.