Labor unions International Operative Plasterers' union is one of oldest labor organizations of Denver. Times Ja 13, 1901 p.14 c.3 Miners' union failing in attempt to organize in Trinidad area. Times Ja 23, 1901 p.5 c.4 New officers of the Cigarmakers' union. Times J1 3, 1901 p.2 c.l Carriage '.Workers, Bookbinders and Boiler makers elect officer:. Times Jl 10, 1901 p.7 c.2 Trouble between two plasterers' unions. Times J1 12, 1901 p.5 c.l
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