| Labor movement -- United States -- History. Matches 17 items |
| Labor movement -- United States -- History -- 19th century. Matches 2 items |
| Labor movement -- United States -- History -- 20th century. Matches 9 items |
| Labor movement -- United States -- History -- Sources. Matches 1 item |
| Labor movement -- United States -- Pictorial works. Matches 1 item |
| Labor movement -- United States -- Political activity. Matches 1 item |
| Labor movement -- West Virginia -- History. Matches 1 item |
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Labor negotiations. SEE: Collective bargaining Matches 1 item
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Labor negotiations -- Monongahela River Region (W.Va. and Pa.) SEE: Collective bargaining -- Monongahela River Region (W.Va. and Pa.) Matches 1 item
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Labor negotiations -- Pennsylvania. SEE: Collective bargaining -- Pennsylvania Matches 1 item
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