Contributions

  • Sperry, Henry Muhlenberg, 1861- - Contributor
  • Carter, Paul Epler, 1886- - Contributor

Publication

1913 - General railway signal company, Rochester, N.Y

Word Count

108,750 words, Guess

Page Count

435 pages

Identifiers

Classifications

  • LCCTF635 .G24

Subjects

Topics

SignalingRailroadsInterlocking systemsRailroads -- Signaling -- Interlocking systems

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