The design of the London underground diagram

Published in 1969 by Lund Humphries, this monograph serves as a seminal analysis of Harry Beck’s iconic 1933 London Underground map. Ken Garland, a prominent British graphic designer and educator, authored this study to examine the transition of cartography from strict geographical accuracy to the schematic logic required for transit navigation. The work frames Beck's design not merely as a utilitarian tool, but as a masterpiece of twentieth-century visual communication that prioritized the user's need to understand connections over literal distance.

Garland’s analysis delves into the formal elements of the diagram, such as the use of forty-five and ninety-degree angles, which provided a clean, modern aesthetic that became synonymous with the London Underground identity. By contextualizing the map within the broader design movements of the era, the book highlights how Beck transformed a complex, cluttered geographical representation into a legible, abstract system. The publication remains a foundational text for students of information design and typography, widely praised for documenting the rigorous design principles that underpin one of the most recognizable transit diagrams in history.