The treasure trove lay undisturbed for the best part of a generation. When the works were lovingly stored by their owner, the internet was a far-off idea, footballers were not overpaid and didn't have ...

Ah, the 1970s. A decade defined by the dissipation of “Beatlemania” and the rise of funk. By antiwar protests and hippie communes. By big, boisterous afros and large, wispy curls. While the 70s may ...