Along with Aicher’s work for Munich 72, another classic year for Olympic graphic design was Mexico 68, the logo for which was created by US designer Lance Wyman. His concept was radical – it hinted at Op Pop while embracing the vernacular visual culture of the host city – and, like London 2012, it was essentially a graphic stamp, rather than a traditional image with accompanying city name, rings and year. We asked Lance what he thought of the London 2012 work.