LT's war posters used modern design to convey essential information to passengers and staff. Thoughtful passenger behaviour was encouraged in the humorous cartoons of Fougasse and David Langdon. More direct appeals for co-operation, or advice on sheltering
and the 'blackout' were expressed in easy to read layouts. Other posters celebrated LT's contribution to the war effort and London's resilience. These included the striking series of images produced by Fred Taylor (1942), Walter Spradbery (1944) and Eric Kennington
(1944).