The Keystone Viewing Company, located in Pennsylvania, was formed in 1892. The Keystone Viewing Company is best remembered today as a manufacturer of stereoscopes, but lantern slides were an important secondary item. This collection of glass lantern slides depicts international labor activity. The best documented industries are agriculture, forestry, maritime, and textiles.
Founded by Joe Glazer, Joe Uehlein, and Saul Schniderman in 1979, the Labor Heritage Foundation promotes the use and value of music and arts in labor activism. Saul Schniderman also created the Inventory of American Labor Landmarks, which documents historical markers and monuments of labor history in the United States. Notable people represented in this collection include Pete Seeger, Archie Green, and Si Kahn.
Daniel J. Marschall was the Policy Specialist for Workforce Issues at the AFL-CIO from 2008-2016, during which time he served as a liaison between the AFL-CIO and President Obama's transition team. These materials document his work at the AFL-CIO regarding labor and workforce development.