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166374 - The warning signs in the job of the railroad switchman are compared to the warning signs of cancer.
166374 - The warning signs in the job of the railroad switchman are compared to the warning signs of cancer.
00:02:10 Cleared
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186737 - The work of railroads in all their glory in 1940.
186737 - The work of railroads in all their glory in 1940.
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186735 - The work of railroads in all their glory in 1940.
186735 - The work of railroads in all their glory in 1940.
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186730 - A profile of the men and women who serve the Southern Pacific railroad in 1940.
186730 - A profile of the men and women who serve the Southern Pacific railroad in 1940.
00:01:46 Cleared
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