A few weeks ago we were approached by the BBC about a book our family had published in the 1960s: a collection of prints of posters from the French Atelier Populaire movement.
These posters were created in support of the student riots of May 1968. The protests began with students objecting to the policies of President Charles de Gaulle and then escalated to the point where a million people joined a march through Paris calling for his resignation.
The posters became a symbol of the protests and, in the years following, valuable artwork. Original posters can now fetch up to £1,500 depending on the rarity and condition.
While we were hunting in the cellars to find samples of the prints we made the amazing discovery of a stash of the original poster artwork.
The clip below from the BBC Inside Out programme explains more.