PA and OH mine workers in the late 1910s, early 1920s; John L. Lewis in early 1920s, 1940s, 1950

CU United Mine Workers president John L. Lewis in early 1920s / crowd of workers stands, applauds at meeting / Lewis and two other men round corner, walk toward Washington, DC, building entrance in 1950 / bargaining session with Lewis and labor representatives on right and mine owners on left, probably sometime in 1940s / miners ride on coal car in Lansing, OH, mine in 1922 / miners and mules walk out of mine in Wilkes-Barre, PA, in 1919 / from Greatest Headlines of the Century series / Note: [exact dates not known]