Date: February 26, 1895
Creator: Lee, Horatio Grooms; White, John P.; Ball, Thomas & White, James L.
Description: Patent for a "device for indicating at railroad crossings and other points, the approach or departure of trains within any given distance of such crossing or with relation to any point where persons might come into dangerous proximity to the train if they were left unadvised by some such signal as this." (Lines 19-26) Includes instructions and illustrations.
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