1939 LONDON UNDERGROUND MAP No 3 by Hans Schleger.

This edition of the Underground map designed by Hans Schleger (who went under the pseudoynm of "Zero") shows the completion of the Northern line between Archway and East Finchley. Highgate Station is noted as being open 'from summer 1940 only'. On the reverse of the map are two maps of Central London and details of future extensions. The map has an airbrushed background which emphasises the central area. Authorised extensions are included as a dotted line as used for the Central line extensions to Denham and Ongar, the extensions on the Northern line to Bushey Heath, High Barnet and Alexandra Palace and the Bakerloo extension to Stanmore. The District and Piccadilly lines to Hounslow West are horizontal, as is the Central line to Ealing Broadway. The Metropolitan line is shown as far as Aylesbury with the branch to Chesham. The GWR and LMS line between Uxbridge Road and Willesden Junction are included, as is the Waterloo & City Railway. The front cover is red with a small black roundel.

The map shows as under construction the "New Works Plan" (Northern Heights project) to take over the ex-GNR line between Finsbury Park and Edgware and High Barnet, including the Alexandra Palace branch. These were to be incorporated into the Northern Line with a new connection with the Northern City line at Finsbury Park, and an extension from Edgware to Bushey Heath. The project was abandoned at the onset of World War 2 and never restarted, though these lines continued to be shown as under construction until 1950. The Central Line extension to the west is shown as being under construction as far as Denham (though it eventually was only completed as far as West Ruislip), and to Ongar in the east. The map includes the "Middle Circle", an underground train line using the West London Railway between Latimer Road and Earls Court, passing through Uxbridge Road and Addison Road. The line closed in 1940 following bomb damage. It was not reopened until 2008 as part of the Overground network. Overall size approx 15 x 22cm. Condition generally good with small signs of aging along the folds.