Title

A Dwarf Semaphore Signal and Split Switch on an American Railroad

Caption

Illustration depicting a Dwarf Semaphore Signal and Split Switch on an American Railroad. Dated 19th century

Date

19th century

Credit line

Photo12/Ann Ronan Picture Library

Reference

ARP23A18_320

License type

Rights managed

Available size

60.0Mb (4.6Mb) / 12.8in x 18.2in / 3831 x 5474 (300dpi)

Keywords

Illustration Illustrated Dwarf Semaphore Signal and Split Switch Dwarf Semaphore Signal Signal Semaphore Signal Split Switch American America Railroad Arm Track Railroad Track Track Train Track Indicator Indicator Disk Disk United States of America USA United States US Quadrant Safety Safe Safety Position 19th Century Illustration Illustrated Dwarf Semaphore Signal and Split Swit