Letters and photos from Beatles’ early days to go on show in Hamburg

Exclusive: The collection, including donations from Paul McCartney’s brother Mike, shows band’s development in early 60s

A rare set of letters and photos from the early days of the Beatles, in which they write about feeling like stars for the first time, is to go on display in Hamburg.

The collection, from an influential period when the band lived in the German city, includes the only letter in existence with words from both Paul McCartney and John Lennon, which was written to the bassist’s brother, Mike McCartney.