A pre-Beck map of the London Underground

A pre-Beck pocket map of the London Underground, using Stingemore's idea of expanding the central area of the map for ease of reading.
This example has been overprinted with directions for Peter Robinson's, a department store in Oxford Street. Operating in Oxford Street from 1833, the brand lasted until the late 1970s. John Lewis, founder of a rival shop, had been an employee and turned down a chance to become a partner.
On the map the Piccadilly Line only runs between Hammersmith & Finsbury Park and the Northern Line ended at Highgate (although this station is now Archway).

Among the 'lost' stations shown are 'Down Street' & 'Brompton Road' on the Piccadilly Line (both used as government shelters during WWII), 'British Museum' on the Central Line, and 'Praed Street' and 'Bishops Road', both of which have been incorporated into Paddington Station. 'Arsenal' is still called 'Gillespie Road'. The Central Line is coloured orange.
Published five years before Beck this map had already dispensed with surface detail (other than the Thames) and has the white-centred circles for interchanges.
Printed by Waterlow and Sons, the reverse has a map of the central London main line termini, with the tube lines all in black.