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- Discrimination in employment--Pennsylvania--Pittsburgh5
- Picketing--Pennsylvania--Pittsburgh5
- United States Steel Corporation--Employees[remove]5
- Signs and signboards--Pennsylvania--Pittsburgh4
- Central business districts--Pennsylvania--Pittsburgh3
- Civil rights movements--Pennsylvania--Pittsburgh3
- Civil rights demonstrations--Pennsylvania--Pittsburgh2
- Civil rights workers--Pennsylvania--Pittsburgh2
- Grant Street (Pittsburgh, Pa.)2
- Race discrimination--Pennsylvania--Pittsburgh2
- U.S. Steel Building (Pittsburgh, Pa.)2
- African American civil rights workers--Pennsylvania--Pittsburgh1
- African American men--Pennsylvania--Pittsburgh1
- African Americans--Civil rights--Pennsylvania--Pittsburgh1
- Civil Rights demonstrations--Pennsylvania--Pittsburgh1
- Demonstrations--Pennsylvania--Pittsburgh1
- Discrimination--Pennsylvania--Pittsburgh1
- Judges--United States1
- Men--Pennsylvania--Pittsburgh1
- National Association for the Advancement of Colored People1