File:Whitemoss new wig wag 2 - Coppermine - 12312.JPG - Roader's Digest: The SABRE Wiki
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
Wigwag (flag signals) - Wikipedia
Wig Wag Terp Slurper Set with Terp Pearls | Terporium...Taste your Terps