81 items
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| Date | 1967-12-04 |
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| Date | 1970 |
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| Date | 1965-03 |
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| Creator | Harry Coughanour |
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| Creator | Bill Calbick |
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| Date | 1969-03-31 |
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| Creator | Monsignor Charles Owen Rice |
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| Creator | Monsignor Charles Owen Rice |
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| Creator | Monsignor Charles Owen Rice |
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| Date | 1985 |
| Subject | Pittsburgh History |
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| Creator | Charles McCollester |
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| Creator | Tri-State Conference on Steel; United Steelworkers of America |
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| Creator | United Steelworkers of America; Tri-State Conference on Steel |
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| Creator | Tri-State Conference on Steel. |
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| Date | 1985 |
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| Creator | Lazard Freres & Co; Rea & Zappala, Inc.; R. Torres Tumazos |
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| Creator | Duquesne University |
| Date |
| Subject | Pittsburgh History |
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| Creator | Charles McCollester |
| Subject | Pittsburgh History |
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| Creator | Bill Yund |
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| Creator | Tri-State Conference on Steel |
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| Creator | The Tri-State Conference on Steel |
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| Creator | Tri-State Conference on Steel |
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| Creator | United Steelworkers of America |
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| Creator | Tri-State Conference on Steel; United Steelworkers of America |
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| Creator | Charles McCollester |
1964-05-03 |
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1950 |
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1994-02-11 |
1942 |
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1937-06-11 |
1985 |
1985-01-28 |
1985 |
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1985-04-30 |
1991-11-21 |
1984-10-29 |
1985-01-18 |
1986-01-08 |
1986-01-08 |