Interesting that the London Passenger Transport Board once used the typeface Kabel for its informational material. Later on Edward Johnston created the Railway Underground typeface with its diamond shaped i-dots. Did Johnston intend to refer to Kabel, not only by the dot, but also to the geometric approach of Kabel or is that pure coincidence?
See: http://www.creativereview.co.uk/cr-blog/2013/february/logo-that-almost-k...