Image: Hall wigwag signal ad 1916
Size of this preview: 433 × 599 pixels. Other resolutions: 173 × 240 pixels | 566 × 783 pixels.
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Description: Advertisement for Hall Switch and Signal Company, USA. The ad features a photo of a "wigwag" signal installed at a railroad grade crossing (level crossing).
Title: Hall wigwag signal ad 1916
Credit: Railway Signal Engineer. Vol. 9, No. 12. December 1916. Advertising section, p. 27. (Chicago: Simmons-Boardman Publishing Co.)
Author: Hall Switch & Signal Co.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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