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- Portrait of Thomas Logan, 1879 -
- 1879
- Collections - Artifact
Portrait of Thomas Logan, 1879
- Thomas Edison with His Laboratory Assistants, Menlo Park, New Jersey, circa 1880 -
- circa 1880
- Collections - Artifact
Thomas Edison with His Laboratory Assistants, Menlo Park, New Jersey, circa 1880
- Thomas Logan and Other Employees outside Thomas Edison's Menlo Park Laboratory Machine Shop, 1877-1881 -
- 1877-1881
- Collections - Artifact
Thomas Logan and Other Employees outside Thomas Edison's Menlo Park Laboratory Machine Shop, 1877-1881