The original creator of this thing made an alternate version for the 1948 Olympics.  
David Booth created a version of this thing made from paint squeezed out of their containers.  Paul Middlewick operates a website that alters this thing to make images of animals.  The original creator of this thing made an alternate version for the 1948 Olympics.  Dinosaur Polo Club is developing a great game inspired by the aesthetics of this thing.  The first version of this thing was inspired by (*) circuit diagrams and alternated between using diamonds and tick marks.  Harold Hutchinson added new interchange symbols to this thing but retained the use of 45 degree angles.  Thanks in part to criticism from Mayor Boris Johnson, the river was reinserted onto this diagram after being briefly removed in 2009.  It was originally designed by Harry Beck and uses blue to represent the Piccadilly line.  For 10 points, name this diagram that outlines subterranean public transportation options in the capital of the United Kingdom.
David Booth created a version of this thing made from paint squeezed out of their containers.  
Tube Map [or London Underground Map]