beginning, the Wales Adding Machine Company of Wilkesbarre, PA was a
strong competitor of Burroughs. The innovative Wales featured visible
results above the keyboard. At one point, more than 40 different models of
varying carriage width, number of places and auxiliary keys existed, but
in 1923, the line was consolidated into two main classifications - the
large machines, and the small portable models."
University Computer History Museum - Mechanical Computing