"I remember, as a student, being very struck by a poster arguing against an attempt by Edward Heath's government to bring in museum charges. It said: 'We the undersigned oppose the introduction of admission charges' and carried the signatures of Van Gogh, Titian, Turner and some 50 other great artists. It made me realise a simple truth: that free admission is all about giving everyone, no matter what their means, the chance to see the greatest works of art, science and history that our nation has."

Chris Smith the Labour minister who ended museum charging exactly 10 years ago

Quoted in this Guardian article

This is the poster he was talking about, by Crosby Fletcher Forbes, 1970.

Apologies for the poor quality image – photographed from p.108 of my copy of A Smile in the Mind.

Not a bad case study for the lasting power of graphic design.