2. Pennsylvania labor and industry review ... [1939 - 1949]
3. Graphic Supplement. Vol.1, October 1938 [1938]
8. The Laborgraphic [1937 - 1937]
16. Spray painting in Pennsylvania [1926]
18. Labor laws [Pennsylvania] [print/digital]. [1924 - ]
19. Special bulletin [1923 - ]
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