Poster, Winter Sales, for London Underground, 1922 (CH 18447481)

Poster, London History at the London Museum, for London Underground, 1922 (CH 18447525)

Poster, London History at the London Museum, for London Underground, 1922 (CH 18447525-2)

Poster, The North Downs, London Underground, 1915 (CH 18447297)

Rob Bailey talks through creating over 40 posters for London Underground

Poster, The Royal United Service Museum, for London Underground, 1921 (CH 18447459-2)

Poster, The North Downs, London Underground, 1915 (CH 18447297-2)

Poster, Summer Sale at Derry and Tom's, London, 1919 (CH 18447319)

A Chinese language poster from 1920s London