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Subject

• History (2) + -
• Agriculture (1) + -
• Arboretums (1) + -
• Archaeology (1) + -
• Associations, institutions, etc (1) + -
• Caves (1) + -
• Civic improvement (1) + -
• Civilian relief (1) + -
• Commerce (1) + -
• Conservation of natural resources (1) + -

• Education (1) + -
• Environmental policy (1) + -
• Flood relief (1) + -
• Food industry and trade (1) + -
• Geography (1) + -
• Historians (1) + -
• Historic buildings (1) + -
• Historic sites (1) + -
• Parks (1) + -
• Recreation (1) + -
• Roads (1) + -
• Science (1) + -
• Societies, etc (1) + -
• War work (1) + -
• World War, 1914-1918 (1) + -
• World War, 1939-1945 (1) + -
• Zoology (1) + -
• Zoos (1) + -

Location

• Pennsylvania (2) + -
• Pittsburgh (2) + -
• Pittsburgh (Pa.) (2) + -
• Fayette County (Pa.) (1) + -
• Golden Triangle (Pittsburgh, Pa.) (1) + -
• Pleasant Hills (1) + -
• Point Breeze (Pittsburgh, Pa.) (1) + -
• Point State Park (Pittsburgh, Pa.) (1) + -