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1944 Vintage Photo of African American Children in School - Available at KNOWOL

1944 Vintage Photo of African American Children in School

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1939 Communal Dining in Oklahoma City Camp - Available at KNOWOL

1939 Communal Dining in Oklahoma City Camp

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Daughter of Tenant Farmer Muskogee County Oklahoma 1939 - Available at KNOWOL

Daughter of Tenant Farmer Muskogee County Oklahoma 1939

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Workers Alliance Meeting in Muskogee Oklahoma July 1939 - Available at KNOWOL

Workers Alliance Meeting in Muskogee Oklahoma July 1939

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Vintage Kitchen of Arkansas Farm Home June 1939 - Available at KNOWOL

Vintage Kitchen of Arkansas Farm Home June 1939

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1939 Vintage Photo of Kitchen Cleaning in Oklahoma - Available at KNOWOL

1939 Vintage Photo of Kitchen Cleaning in Oklahoma

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Migrant Worker Cooking Over Wood Fire June 1939 - Available at KNOWOL

Migrant Worker Cooking Over Wood Fire June 1939

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Muskogee Oil Plant Picket Line June 1939 Historical Image - Available at KNOWOL

Muskogee Oil Plant Picket Line June 1939 Historical Image

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Vintage 1938 Family on Highway No 1 in Oklahoma - Available at KNOWOL

Vintage 1938 Family on Highway No 1 in Oklahoma

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Migrant Worker Camp Muskogee County Oklahoma 1939 - Available at KNOWOL

Migrant Worker Camp Muskogee County Oklahoma 1939

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Blacksmiths Helper Disassembling Plow Depew Oklahoma 1944 - Available at KNOWOL

Blacksmiths Helper Disassembling Plow Depew Oklahoma 1944

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Veteran Oil Worker Peddler Seminole Oklahoma 1939 - Available at KNOWOL

Veteran Oil Worker Peddler Seminole Oklahoma 1939

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Oklahoma City Streetcar Terminal July 1939 - Available at KNOWOL

Oklahoma City Streetcar Terminal July 1939

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Oklahoma City Streetcar Worker Replacing Wheel July 1939 - Available at KNOWOL

Oklahoma City Streetcar Worker Replacing Wheel July 1939

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Waste Rock Pile at Eagle - Picher Zinc Plant 1942 - Available at KNOWOL

Waste Rock Pile at Eagle-Picher Zinc Plant 1942

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Zinc Ore Loader at Cardin Oklahoma Mine 1943 - Available at KNOWOL

Zinc Ore Loader at Cardin Oklahoma Mine 1943

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1942 Zinc Ore Loading at Eagle - Picher Mine Oklahoma - Available at KNOWOL

1942 Zinc Ore Loading at Eagle-Picher Mine Oklahoma

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Pig Lead Production at Eagle - Picher Plant Cardin Oklahoma 1943 - Available at KNOWOL

Pig Lead Production at Eagle-Picher Plant Cardin Oklahoma 1943

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Eagle - Picher Zinc Concentrator Plant Cardin Oklahoma 1940 - Available at KNOWOL

Eagle-Picher Zinc Concentrator Plant Cardin Oklahoma 1940

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1943 Zinc Production Workers at Eagle - Picher Plant Oklahoma - Available at KNOWOL

1943 Zinc Production Workers at Eagle-Picher Plant Oklahoma

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1942 Zinc and Lead Production at Eagle - Picher Smelting Plant - Available at KNOWOL

1942 Zinc and Lead Production at Eagle-Picher Smelting Plant

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Zinc Mine Production in Cardin Oklahoma 1942 - Available at KNOWOL

Zinc Mine Production in Cardin Oklahoma 1942

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Zinc Ore Bucket Hoisted from Mine Cardin Oklahoma 1942 - Available at KNOWOL

Zinc Ore Bucket Hoisted from Mine Cardin Oklahoma 1942

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Zinc Recovery Process 1943 Eagle - Picher Plant Cardin Oklahoma - Available at KNOWOL

Zinc Recovery Process 1943 Eagle-Picher Plant Cardin Oklahoma

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Vintage World War II Zinc Lead Ore Transport at Eagle - Picher 1940s - Available at KNOWOL

Vintage World War II Zinc Lead Ore Transport at Eagle-Picher 1940s

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Eagle - Picher Zinc Concentrator Waste Rock 1942 - Available at KNOWOL

Eagle-Picher Zinc Concentrator Waste Rock 1942

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Worker Operating Zinc Ore Leader at Eagle - Picher 1942 - Available at KNOWOL

Worker Operating Zinc Ore Leader at Eagle-Picher 1942

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1942 Worker at Eagle - Picher Zinc Smelting Plant Safety Measures - Available at KNOWOL

1942 Worker at Eagle-Picher Zinc Smelting Plant Safety Measures

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Zinc Production at Eagle - Picher Plant Oklahoma 1942 - Available at KNOWOL

Zinc Production at Eagle-Picher Plant Oklahoma 1942

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Molten Zinc Flowing from Furnace at Eagle - Picher Plant 1943 - Available at KNOWOL

Molten Zinc Flowing from Furnace at Eagle-Picher Plant 1943

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Zinc Jumbo Blocks for War Effort at Eagle - Picher Plant 1942 - Available at KNOWOL

Zinc Jumbo Blocks for War Effort at Eagle-Picher Plant 1942

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Zinc Mine Blast Hole Drillers Cardin Oklahoma 1942 - Available at KNOWOL

Zinc Mine Blast Hole Drillers Cardin Oklahoma 1942

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Molten Zinc Flowing from Furnace at Eagle - Picher Plant 1942 - Available at KNOWOL

Molten Zinc Flowing from Furnace at Eagle-Picher Plant 1942

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Zinc Smelting Operation at Eagle - Picher Plant 1942 - Available at KNOWOL

Zinc Smelting Operation at Eagle-Picher Plant 1942

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Zinc Mine Workers in Cardin Oklahoma 1942 - Available at KNOWOL

Zinc Mine Workers in Cardin Oklahoma 1942

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Zinc Ore Bucket Ready for Hoisting at Eagle - Picher Plant 1942 - Available at KNOWOL

Zinc Ore Bucket Ready for Hoisting at Eagle-Picher Plant 1942

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Blast Hole Drillers at Eagle - Picher Zinc Mine Oklahoma 1943 - Available at KNOWOL

Blast Hole Drillers at Eagle-Picher Zinc Mine Oklahoma 1943

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Flotation Machine Maintenance at Eagle - Picher Zinc 1943 - Available at KNOWOL

Flotation Machine Maintenance at Eagle-Picher Zinc 1943

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Flotation Machines in Zinc Concentrator 1944 - Available at KNOWOL

Flotation Machines in Zinc Concentrator 1944

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Zinc Filtration Equipment Production Eagle - Picher Plant 1943 - Available at KNOWOL

Zinc Filtration Equipment Production Eagle-Picher Plant 1943

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Zinc Concentrate Flow at Eagle - Picher Plant Oklahoma 1942 - Available at KNOWOL

Zinc Concentrate Flow at Eagle-Picher Plant Oklahoma 1942

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Zinc Production at Eagle - Picher Plant Cardin Oklahoma 1942 - Available at KNOWOL

Zinc Production at Eagle-Picher Plant Cardin Oklahoma 1942

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1942 Zinc and Lead Ore Transportation at Cardin Oklahoma - Available at KNOWOL

1942 Zinc and Lead Ore Transportation at Cardin Oklahoma

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Zinc Production at Eagle - Picher Plant 1943 - Available at KNOWOL

Zinc Production at Eagle-Picher Plant 1943

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Zinc Concentrate Shipment at Eagle - Picher Plant 1942 - Available at KNOWOL

Zinc Concentrate Shipment at Eagle-Picher Plant 1942

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Eagle - Picher Zinc and Lead Production Cardin Oklahoma 1942 - Available at KNOWOL

Eagle-Picher Zinc and Lead Production Cardin Oklahoma 1942

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1939 Salinas California Shacks for Lettuce Shed Workers - Available at KNOWOL

1939 Salinas California Shacks for Lettuce Shed Workers

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Slab House in Atoka Oklahoma June 1938 Vintage Image - Available at KNOWOL

Slab House in Atoka Oklahoma June 1938 Vintage Image

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