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Londons Underground
One sheet vintage
London Underground "Diagram of Lines," a landmark in information design originally created by Harry Beck.
Map Details and History

Designer: Harry Charles (H.C.) Beck, an electrical draftsman who revolutionized transit maps by replacing geographic accuracy with a schematic diagram using only 45- and 90-degree angles.
Version: This specific version is the 1946–1947 edition (Diagram of Lines No. 1), notable for showing postwar expansion plans for the Central Line and Northern Line.
Key Features: It uses two types of dotted lines to represent sections under construction and lines planned for electrification.
Historical Significance: Beck's 1933 original design was initially rejected for being "too revolutionary" but became a global gold standard for subway maps.
Londons Underground - After (Poster)
After
Londons Underground - Mounted (Poster)
Mounted
Londons Underground (Poster)