Wabash looks like quite a formal fabric, but in fact it was commonly used for work wear from the early 1800s through to the early 1900s, very often as uniforms for the massive US railroads work force. Finding out a lot about Wabash is very difficult, but we believe there were 2 ways in which the dots were originally “applied” to the base fabric: 1) the pattern would be applied as a block print to the undyed fabric with a starch based “resist” and then dyed, the dye not adhering to the resistant pattern; and 2) the fabric was dyed and then the pattern bleached into the fabric - this was done by applying a mildly acidic solution to the cloth via copper rollers with the pattern raised from the surface of the roller, a process known as discharge printing.