Pocket Underground map, March 1922.

Paper geographic style Underground map; shows all the Underground lines belonging to the Underground Group with the addition of the Metropolitan Railway.

The map shows all lines in their entirety except the Metropolitan line which is shown as far as Preston Road, the Bakerloo and L&NWR line to North Wembley and the District line as far as South Harrow in the West and Bow Road in the East, stations beyond the boundaries of the map are indicated in boxes at the end of the lines.

Only six colours, green, blue, red, brown, purple and black, and various shading patterns, are used to represent the different lines. Connections to motor bus and tram services are given in a text box which points to the relevant Underground station.

Interchanges are marked by circles and white line interconnectors and station names are all printed in black. Extensions under construction are not shown, however the name of Notting Hill Station has been changed to Ladbroke Grove & North Kensington.

Map has a black decorative border with the Underground logo as the title and a reference key at the bottom of the map. On the reverse there are details about main line connections, first and last trains, docks, markets, art galleries, academies, museums, public buildings, institutions, concert halls, parks, sports grounds, a street plan of the City and Kensington and a theatre plan and key.

The front cover has a 'pecked' roundel with a red circle and black UndergrounD logo bar, as redesigned by Edward Johnston.