Labor. Denver Open and closed shop, Denver. Times My 12, 1920 Open and closed shop inaugurated in queen City foundry. Times F 1, 1921 p.l Open and closed ,--,ho-,j declared in D^nver. o,;t Ap 5, 1921 p.l Open. and closed ^_ti,op 'eclared in 5 branches of building trade. ?!'N Ap 5, 1921 p.l Open shop declared. All papers about AP 15, 1921 p.6
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