"Pennsylvania" . . . . "United States" . . . . "Speeches"@en . . . . . "Reports"@en . . . "This is a partial record of the career of Joseph Sill Clark. It consists primarily of material gathered by staff, reports, memoranda, clippings, news releases, articles, with some correspondence, all relating to issues and events with which Clark was involved."@en . . . . . "Memoranda"@en . . . . . . . . . . . . . . . "Correspondence"@en . . . . "Papers"@en . . . . "Clippings"@en .