Civil War Times Magazine - This detail from “A Manual of Signals” by Albert Myer shows his signal system of using flags, which became know as the "wig wag" system. Myer, using
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NJ Intl - Grade Crossing Signals - Wig-Wag w/Stop, Look & Listen Sign pkg(2 - Nonpowered, Brass) - 525-1180
![Wigwag Gradient Sans Serif Alphabet Letters Calligraphy Letter Typeface Typography Unique Stock Illustration - Illustration of color, colourful: 206072429 Wigwag Gradient Sans Serif Alphabet Letters Calligraphy Letter Typeface Typography Unique Stock Illustration - Illustration of color, colourful: 206072429](https://thumbs.dreamstime.com/z/wigwag-alphabet-j-font-unusual-lettering-text-two-tone-gradient-colour-embossed-bevel-effect-ideal-transparent-206072429.jpg)