But while New York-based photographer Bob Gruen's rock'n'roll collection includes stars like Mick Jagger, the Clash, Chuck Berry and Patti Smith (also on show here), his portraits of the Lennons are the most compelling. For fascinating evidence of a famously complex relationship, witness a picture of the Lennons in a rowing boat in 1973 (right) - John playing the fool for the camera while Ono looks on with the intensity of a lioness watching her young.
But for those with doubts about the strength of Lennon and Ono's relationship, look no further than the 1972 shot of the Lennons literally wrapped up in each other - John playing guitar while Ono dances along to the music, her arms draped around his neck - every bit a part of his work. If every picture tells a story, this was, as Ono puts it, "the big one".
`Bob Gruen: Sometime in New York City', The Special Photographer's Company, 21 Kensington Park Road, W11 (0171-221 3489) to 20 May. Signed, limited-edition book £275Reuse content